To avoid these ads, REGISTER NOW!

Between 485 & 705 SQ/FT Mid-Century Moto Mecca Makeover

Workspaces between 485 and 705 squarefeet.

Bakafish

Well-known member
Joined
Feb 7, 2017
Messages
477
Location
Tokyo
Thanks so much for all the inspiration! :bowdown:

The house look amazing - going to build cabinets for the first time because of you....

I was also inspired to build cabinets inspired by Sakurama-san's baltic designs. There is a learning curve and some pitfalls, but the basic concept is proving viable. Feel free to reach out to me (or check my thread) if you are not fully inebriated with talent like him and want to hear some cautionary tales from someone still on the underwater portion of the learning curve.
 
To avoid these ads, REGISTER NOW!

BORING HOP YARD

Well-known member
Joined
Jan 13, 2007
Messages
1,104
Location
Boring Oregon
Just to tag onto the post from McRae about reverse pulse.
In road racing Datsun's we always built what was called (AR Headers) Anti Reversion.
We also did it on the intake side as well. It bounces the wave back to the intended direction of flow. I first learned about them from David Vizard when I was building an Austin Healey Sprite "Frog eye" and found his book on Tuning BL's A series engine. Its full of spead secrets that I have used for years. Gregor, the next time your at Powell's check it out.
Here is a link to a discussion about AR headers.
https://www.speed-talk.com/forum/viewtopic.php?t=31136
 

cfloren

Member
Joined
Dec 14, 2008
Messages
16
Location
Torrance, CA
Another point which was interesting was when I asked if the port should be blended to the larger exhaust tube, "No, you want that step there - you want to do anything you can to disrupt any reverse pulse to the head so the step helps that"

Interesting that your engine builder would say that. The reverse pulse is a negative pressure wave, and steps and other sharp changes in cross-sectional area initiate the reflection of negative pressure waves traveling back to the port and cylinder. By negative pressure I just mean lower than the surrounding gas.

You want to encourage the negative pressure waves to reach the cylinder at the appropriate time, which helps evacuate & scavenge exhaust gases and even pull in more intake charge during the overlap period while both intake & exhaust valves are open.

The reverse pulses are good; the advice was sound but the explanation sounds a bit backwards :-/ Forgive me if I'm missing something here though.

https://burnsstainless.com/blogs/articles-1/exhaust-header-theory

Edit, here's a nice graph of the scavenging effect from https://www.enginelabs.com/engine-tech/exhaust/performance-exhaust-system-design-and-theory/

2016-02-26_16-51-06-640x325.jpg
 
Last edited:
OP
S

sakurama

Well-known member
Joined
Oct 10, 2010
Messages
1,458
Location
Portland - the cool one.
Yes, Dan had said it was a good idea to build the pipe with hard steps and then to make the megaphone a slip fit that could slide back and forth on the last section of the pipe so that you could measure the performance at different lengths.

I will make the pipe with slip fits and steps and springs to hold it together so we can change the lengths. It's good that I have some general lengths to works towards.

That won't happen before the show but hopefully after.

I got a call from the platers that the frame is ready and Lara will get that first thing tomorrow morning. I haven't seen it but they said they're very happy with how it turned out...

Gregor
 
OP
S

sakurama

Well-known member
Joined
Oct 10, 2010
Messages
1,458
Location
Portland - the cool one.
It's been a day man! C'mon... pics of the frame!

Dude, he’s three hours behinds us. Give him a chance to get some coffee!

Ha, I am a little behind. I went to NYC for three days and I can never sleep when I get back so it takes me a day before I catch up. Also, caught a cold.

But I have the chassis together as you've seen on Instagram and now half the engine. I'll do a post tonight when I wrap up. Or in the morning. I have regular photo work to do so I'm going to have to quit early tonight.

But progress is happening.

Gregor
 
OP
S

sakurama

Well-known member
Joined
Oct 10, 2010
Messages
1,458
Location
Portland - the cool one.
So my goal was to have things that I couldn't do or was farming out done by Tuesday last week so I could hand them off while I went to NYC to do a quick shoot. Kyle had the bodywork and I dropped off the frame at the platers.

i-xSqw5vK-X2.jpg


On Saturday morning early Kyle swings by and drops off the paint and seat. He really came through and to think I had no plans for a seat at all.

i-9fn7p2L-X2.jpg


i-r3GpzVm-X2.jpg


I had given him a photoshop file that I'd made. I created an oval brush and then make a pattern. The idea was to use an oval to mimic the patterns of the 60's and 70's like you'd see in boomerang formica and the like. The bike isn't vintage per se but the bodywork is and that time was the heyday for flat track - it just felt right.

i-DW85QbH-X2.jpg


And we'd talked about making the tank/seat black fading into silver flake and then overlaying this design in gold. It turned out a bit more subtle than we'd hoped but time wasn't on our side to rework it. It probably shouldn't have been in gold or have been less translucent but I don't mind it. I like subtle things and it works. Acceptance is my mantra at the moment.

But you guys want to to know how the nickel turned out.

Okay. I won't say great and it's not awful. It was a learning experience but a completely fine one.

i-Kt3tGwC-X2.jpg


When I've had things plated before - including nickel - they've been polished, copper plated to fill and then nickeled. I asked them if they copper plated and they seemed confused and that should have been my warning that the coating I was going to be getting was a utilitarian one designed to prevent rust and corrosion. This shop isn't doing decorative chrome or Harley's but industrial stuff.

i-vNNQ4VW-X2.jpg


And I did nothing to prep the frame. There was still light rust on some of the tubes. If I'd known then what I know now I'd have scotchbrited the frame and probably tried to give it at least a solid smoothing out.

i-Rk29KqS-X2.jpg


But I don't want to sound like I'm disappointed. I'm not at all. It looks awesome and has a nice satin look to it. We polished it with Mothers and that helped a bit and to be fair they said they'd be happy to redo it if I wanted. I won't have it redone because as you can see it looks frickin' awesome. The nickel matches the stainless in tone and luster and to be honest I didn't have expectations really. I just knew it would be better than paint.

And so the goal of the bike - this vaguely duotone silver/gold scheme - is completely working. I think it looks amazing and I'm constantly surprised at how this motorcycle has sort of come from nowhere into this truly amazing little flat tracker. I had this frame for 10 years at least and suddenly, in less than a month, we're here.

It makes me realize I need to work harder.

i-drdddmX-X2.jpg


So whenever I travel to NYC my clock gets messed up on the return - I can't fall asleep when I get in at 1am or whenever. So my first day I'm wrecked. I also caught a cold which I'm still fighting so I've been taking my time on the engine. First pulling the case bearings.

i-4GpXpGT-X2.jpg


These locating rings (what are they called anyway? They're not dowels) were seized in the case and part of why the case was so hard to split. I decided to drill them out and then ream the holes clean and then make new dowels that were just slightly undersized so I wouldn't have to deal with that again.

i-mLNP9R3-X2.jpg


The better part of Saturday was then spent prepping the cases. Lara spent several hours scraping the cases with a razor (slightly dulled) and a few people on IG (I'm going to just use that abbreviation for Instagram from now on) suggested the "Super Scraper" which I promptly ordered but it won't show up in time. Next time...

i-cd5TKtD-X2.jpg


With the cases scraped and bearings out we bead blasted them trying to keep as much of the glass out of the inside as possible. We washed them 4-5 times and flushed the oil passages with high pressure water so hopefully we got them clean and bead free.

I made a few bearing press pieces in aluminum and heated the cases up to 200F and then tapped the bearings all in. They went home very easily.

i-2rBX5dD-X2.jpg


I spent an hour at least putting the gears in and out trying to figure out why they didn't spin in all the gears before finding one gear upside down. Considering that I had a BMW shop once build me a transmission and it came back only shifting from 1st to 2nd I'm pretty happy with that.

My mechanical ability increases in direct proportion to my patience. There's a lesson there for me...

i-RSjbQ5k-X2.jpg


Sadly, I hit my first fly in the ointment. The new 5 plate clutch basked/primary gear was pretty significantly out of true to the point where I couldn't use it. I was able to use the stock clutch which has 4 plates and use the higher pressure springs of the new kit but if the motor makes as much power as it's supposed to the stock clutch won't last long.

i-dhPQX7g-X2.jpg


With that set back avoided, or at least side stepped, I was able to button up the clutch side of the engine. That felt like progress.

i-m6xNCKT-X2.jpg


i-5JG7pDw-X2.jpg


And here I'm checking the ring gaps of the first two rings. Despite the truly magical ability if Google Live Translate (seriously, amazing) there's not a single mention of what the correct ring gap should be on this kit so I've quit for the night, am drinking some tea and making this post and then will do more research on ring gaps before going to bed early.

The nice thing I keep reminding myself of is that my deadline is self imposed and not really all that important. The bike will be done enough at whatever point I'm at by Thursday. It would be nice if it ran and was finished and I'll be busting my **** to get there but if not I'm okay with that too. Maybe that's the cold imparting an uncharacteristically zen approach.

I have a lot left to do so I have to be realistic about it. Despite that bit of levity I'm pretty happy with how she's coming together. It's a pretty cool little bike in many ways and I'm happy with the progress so far.

Alright, tune in tomorrow as we learn WTF ring gaps should be on an engine with no specs.

Gregor
 

GeddyT

Well-known member
Joined
Jun 17, 2015
Messages
1,243
Location
Bellingham, WA
I have known them as tubular dowels. HTH


:beer:

I think the actual engineering term for them is Disposable Corrosion Collectors (DCC).

At a couple bucks per, I have replacements on hand every time I split cases. Time > money. Maybe some nickel anti-seize would be a good idea, but the pros might say that's a bad idea for some reason.
 
OP
S

sakurama

Well-known member
Joined
Oct 10, 2010
Messages
1,458
Location
Portland - the cool one.
So the good folks at Wiseco had plenty to say about piston ring gap. Which was very nice of them and super helpful to me.

i-ZLMf8Wp-X2.jpg


With no specs to speak of that I could find in the Japanese instructions that came with the kit I was happy to use the specs that Wiseco recommended which is bore size x .004 - .0045. If your engine is very high performance you'd go to a larger gap with a factor of .5 or more so I took the larger of the stock numbers. Better to err on the side of too wide a gap than too narrow.

i-sLmC2vf-X2.jpg


I used the oven to heat the old head and recover some of those hollow locating dowels - or whatever.

i-nVhDT7t-X2.jpg


It took the better part of the day to assemble the top end. Not that it should take that long but I had to deal with the house hold issues that come with having guests. Making sure we'll have enough coffee roasted, fixing the roasting machine, cleaning the espresso machine... stuff.

i-PzvKBKG-X2.jpg


Aside from the difficulty of assembling an engine with a Japanese translation is running into the need for special tools which you didn't know you needed. Luckily I have plenty of stock and could just slap together a quick flywheel holder so I could torque the nut.

i-KzSBNRs-X2.jpg


I haven't dynamically timed the motor (can't until it's ready to run) but it's static timed with the marks on the ignition.

i-wTH9xFR-X2.jpg


So I think it's mostly together. I now see there's a missing bolt in that photo so I'll need to figure that out...

i-q2Ms9Z8-X2.jpg


But the valves are set, the cam is in place and the ignition is close enough to start with. Tomorrow I'll slot the engine into the frame and begin the work of doing all the little stuff. And big stuff like make an exhaust. Lots of stuff. Lots.

Gregor
 

zmotorsports

ALLIANCE MEMBER
Joined
Oct 20, 2009
Messages
21,427
Location
Northern Utah
Coming along nicely Gregor.

I've been admiring your "kustom" tools as several of them closely resemble my own. I've built a lot of hi-performance two-stroke ATV/motorcycle and snowmobile engines over the years and fabricated most of my own stands, clutch basket tools and even some flywheel removal tools rather than purchasing the task specific ones from the dealer.
 
OP
S

sakurama

Well-known member
Joined
Oct 10, 2010
Messages
1,458
Location
Portland - the cool one.
Nice going Gregor! I'm excited to see the finished bodywork and what kind of exhaust you're going to fab.

Yeah, me too. No idea what I'm going to do. Well, I have some idea. I want a high pipe as I've never liked the low ones that a lot of flat track bikes use. The double high pipes of the Harley's are pretty iconic.

Mostly i'm going to be trying to keep the steps and dimensions that Dan of Baisley gave me. Engine should go in the frame today and then I can can firm up the tank and seat mounts and maybe start clearancing (how is that not a word? It's totally a word. My spell checker says it's not but clearly my spell checker does not build anything)... er, yes, clearancing the tank for the carb.

Coming along nicely Gregor.

I've been admiring your "kustom" tools as several of them closely resemble my own. I've built a lot of hi-performance two-stroke ATV/motorcycle and snowmobile engines over the years and fabricated most of my own stands, clutch basket tools and even some flywheel removal tools rather than purchasing the task specific ones from the dealer.

I think the funny thing about those sort of tools is that they are always so primitive. We rarely take the time to make them nice because we need them NOW and we need them once. Then into the drawer they go.

i-BL6938N-X2.jpg


I posted a shot of the drawer on IG yesterday and my friend Scott saw it and immediately read through the various bikes seeing that I'd once had an MV Agusta Brutale. So the drawer is a bit of history as well.

The early ones were so bad - I could hardly weld - and then they got better as I got more skills.

Gregor
 

shirk

Well-known member
Joined
Sep 2, 2011
Messages
90
Location
North Vancouver, BC
This is making me really miss my old XR400. One winter I pull the engine and had a local shop deck the head and clean up all the porting. The work gave it a bit more snap instead of the usual lug.

Pulling to see you make it to the end before the show.
 
OP
S

sakurama

Well-known member
Joined
Oct 10, 2010
Messages
1,458
Location
Portland - the cool one.
Well, it was a productive day but it's starting to feel like the chances of the bike running are going to be very slim. I put in 18 hours today and it feels like I'm not making a dent - or not much of one.

i-QTCJHXQ-X2.jpg


The engine went into the frame this morning which was great. I'm very happy with the choices I've made so far with the silver, gold, nickel and stainless.

i-824DF67-X2.jpg


Lara spent the day getting the trailer ready for guests, cleaning the shop and working on small parts and then cutting the tank to give the carb some room.

i-gWsxFKP-X2.jpg


We'll cut out this section and then glass it back so there's room for the throttle cable to make it's quick 90* turn. We still need to finalize the method of the tank and seat mounting which is a bit daunting. Locations are pretty set but there's still the matter of making the delrin spacers, bumpers etc.

And my whole day was spent making this exhaust - which is actually only tacked together but it's about 90% solid that will be the layout. The only spot I want to address is right below the carb where the two different sized tubes join.

i-VJ3LWWS-X2.jpg


I love making exhausts. It's tedious and fiddly but it feels great when you get it right. To me it's an opportunity to tie the front and back of the bike together and to connect the motor to the chassis and bodywork. It's like a tour guide to the motorcycle.

i-66ZMF2Z-X2.jpg


I'm not a fan of symmetry. I am a fan of balance. So I try to make things work visually and have balance but to not be even and perfect.

i-DT73kjb-X2.jpg


To me stacking the exhaust on the same side of the bike as the carb and the giant air cleaner is all about reinforcing that this is a bike that is made for an asymmetrical task. It is not for turning right - only left. Nothing that could be damaged in a fall is on the left side.

I will sleep on this and then probably set up to final weld this tomorrow and then get on the tank. Scott Kolb is flying into town tomorrow a day early just to help me get the bike done and if there was any glimmer of hope to finish it's going to be because of Scott - he's a stellar fabricator.

So it's down to the wire. One full day left and maybe a few extra hours...

Gregor
 

Matias

Well-known member
Joined
Feb 28, 2015
Messages
616
Location
Finland
Have been following this with interest, and just wanted to wish you good luck and hopefully you get everything done with the help of Scott and Lara! It is already stunning, no matter to what point you manage to get it to.

Edit. And I like the execution and thought process behind having everything on the right side. Excellent!

BTW, showed my wife some snippets of this thread, ie. the pizze and clocks and this build. She's no fan of motorcycles (or garages) and I wanted to show the variety there is in some of the threads here in GJ, with yours among the best. Thank you for all the detailed updates and superb pics of even the most basic steps. It really makes this thread pop out and a great read every time I open it.
 

Hostyle

Well-known member
Joined
May 8, 2014
Messages
272
Location
Geldrop (NL)
The exhaust routing is spot on! I do wonder though if the aircleaner isn't in the way when you're riding?

I've ridden a Harley once, and I had great fun doing it, but the aircleaner sticking out the side really bugged me. Granted, it was more positioned towards my knee, but everytime I went around a left hand bend*, I kept hitting my knee against the air filter.

*around Spa Francorchamps track, there's quite a lot of good riding roads :D
 
OP
S

sakurama

Well-known member
Joined
Oct 10, 2010
Messages
1,458
Location
Portland - the cool one.
Have been following this with interest, and just wanted to wish you good luck and hopefully you get everything done with the help of Scott and Lara! It is already stunning, no matter to what point you manage to get it to.

Edit. And I like the execution and thought process behind having everything on the right side. Excellent!

Thanks, I am happy with the looks now but the next step is the function. Well, the first thing is the function and then the looks and then the function and then... well, you get the idea.

The exhaust routing is spot on! I do wonder though if the aircleaner isn't in the way when you're riding?

I've ridden a Harley once, and I had great fun doing it, but the aircleaner sticking out the side really bugged me. Granted, it was more positioned towards my knee, but everytime I went around a left hand bend*, I kept hitting my knee against the air filter.

It's funny but I haven't sat on it with the filter yet - but when I was routing things I remembered that I'm generally pretty tight up on the tank which means my leg is forward and my knee should be over the filter. It will be in the way when you're standing over the bike but that's okay. I like that, to be reminded that this bikes cares more about air than you.

I wanted the filter to tuck into the subframe more but this 20* bend was the only option for the size. My bigger concern was burning boots or pants on the exhaust - that's a real pet peeve of mine. I think it's tucked in enough...

Honestly this has been a very rushed build. It was fun to try to make a motorcycle in a month but it's important to me to solve the problems as I build, to make sure the bike works. That's one of the reasons I want so badly to race it. I want the chance to prove that the concepts are functional. But building is a process and riding is the feedback loop. I'm going to have to make changes to things to perfect it but I just don't know what those are yet.

So you might be right. I hope not but maybe.

More importantly I want the chance to find out.

Gregor
 
To avoid these ads, REGISTER NOW!

Jim'bo

Well-known member
Joined
Sep 18, 2014
Messages
88
my leg is forward and my knee should be over the filter.
I don't want to sound like an idiot, which is hard for me because I am one, but if the filter sits in your knee cavity, will it get enough air like that? I realize it's not a supercharger or anything like that, "just" a filter, but still.
 
OP
S

sakurama

Well-known member
Joined
Oct 10, 2010
Messages
1,458
Location
Portland - the cool one.
I don't want to sound like an idiot, which is hard for me because I am one, but if the filter sits in your knee cavity, will it get enough air like that? I realize it's not a supercharger or anything like that, "just" a filter, but still.

Ha! No, it will be fine. Lots of things work to help that - it's corrugated so there's more surface area and your leg would only hit a small portion and your pants are fabric not say, plastic wrap. Although if I do ride the bike in my full body latex cat suit that might become an issue.

For everyone that has to see that.

This motor should be good for 14,000 rpms though so that's a lot of air that will be pumped but I've seen 1000cc twins that have smaller filters. When we did dyno testing on the KTM's the filters weren't much bigger and they are 500cc cylinders so I think I'm over filtered on this one.

G
 
Joined
Feb 2, 2008
Messages
15
I think the funny thing about those sort of tools is that they are always so primitive. We rarely take the time to make them nice because we need them NOW and we need them once. Then into the drawer they go.

i-BL6938N-X2.jpg


I posted a shot of the drawer on IG yesterday and my friend Scott saw it and immediately read through the various bikes seeing that I'd once had an MV Agusta Brutale. So the drawer is a bit of history as well.

The early ones were so bad - I could hardly weld - and then they got better as I got more skills.

Gregor
Since you no longer have the Hypermotard, any chance you'd want to sell that spanner? I've been meaning to get one of those to overhaul my forks.
Brad
 
OP
S

sakurama

Well-known member
Joined
Oct 10, 2010
Messages
1,458
Location
Portland - the cool one.
Since you no longer have the Hypermotard, any chance you'd want to sell that spanner? I've been meaning to get one of those to overhaul my forks.
Brad

In my mind I'm going to get another Hyper one day. It probably won't happen so you can have that on an indefinite loan. Send me a PM next week when this is over and I'll send it out to you.

G
 

Kirmet

Well-known member
Joined
Jan 6, 2013
Messages
55
Location
WestbyGawd
Looking so clean and fast. Rooting for you and the team. I appreciate your insomnia so I can follow this build in almost real time.
 

gearhead1960

ALLIANCE MEMBER
Joined
Mar 21, 2019
Messages
1,858
Location
Manassas, VA, a small blot in history
Gregor,

Do subscribe to the theory that all vehicles are female? Or does it come to you the gender of each vehicle you own when you start to learn its idiosycrasies? Do you name your vehicles? I have a late model Mini and have named "her" after my late Grandmother....Lilli
 
OP
S

sakurama

Well-known member
Joined
Oct 10, 2010
Messages
1,458
Location
Portland - the cool one.
Gregor,

Do subscribe to the theory that all vehicles are female? Or does it come to you the gender of each vehicle you own when you start to learn its idiosycrasies? Do you name your vehicles? I have a late model Mini and have named "her" after my late Grandmother....Lilli

I may have said that but I don't really subscribe to that or name any of my vehicles. I might have when I was younger but I think now I just consider them machines and don't really anthropomorphize them at all. I still think there's a connection to machines but not a he/she thing.



Okay, Lara and I (okay, just Lara) cleaned the shop in preparation of Scott's arrival. I worked on the exhaust and trying to figure out the wiring. When Scott got in he immediately looked over the bike, took in what needed to be done and then dove in.

i-PkfFSX3-X2.jpg


It's strange to me to not need to explain something to someone. I've become used to being a teacher and now my teacher was here in my shop schooling me. I explained that I could use a hand working out how to glass in the tank and Scott just said, "No, no, just let me take that over - don't even think about it - done!" and off he went.

i-3Pr2mfn-X2.jpg


i-Q5W332x-X2.jpg


Scott works neater than I do, smarter than I do and quicker than I do. It's fun to watch.

i-SwrZd8x-X2.jpg


Where I struggled with how to clearance the carb I hadn't fit up the petcock yet which Scott did and it hit the carb. I would have just used one petcock and been fine tipping the bike over once in a while but Scott machined a new petcock mount in aluminum and then glassed that in with the patch.

i-RW72zjR-X2.jpg


I worked on getting the wiring harness together and after a few false starts and some trouble shooting we got a spark from the system. Then Scott tidied up the harness.

i-zt9cVNQ-X2.jpg


Another thing I hadn't checked was my chain length. When I put the chain on is was about 10 links short so Lara took off on several errands while Scott and I worked on the bike. It's safe to say without Lara's help I would never be this close to finishing.

i-npgFfXg-X2.jpg


After dinner we came back and did a bit more work until Scott needed to knock off for the night due to jet lag. I decided that I'd go ahead and finish welding the exhaust.

i-nFr3zmn-X2.jpg


It was nice to not struggle for a change with the welding and to even get a compliment from Scott on my welds. I am sure that I sound fawning but this is the person who opened my eyes to this world and then helped me get started. Truly, this entire shop and all my bikes and everything I've built all stemmed from meeting Scott and building that first bike together. So this was a big, big full circle.

i-pJWwJ76-X2.jpg


I made some more exhaust hangers and after the pipe was done welded a spring for the rear muffler.

i-QXsLTNw-X2.jpg


I wasn't sure about the front but Scott suggested welding the flange in to make it more secure and of course that was the right decision. The whole pipe seems pretty tight now and I don't think I'll need any more braces or brackets. The goal being that the when the muffler is bolted on it captures the pipe between the head and the muffler with no room to move.

i-s6M65CS-X2.jpg


I'm pleased with the pipe. And the bike so far. I'm really nervous about whether it will run or not. The clutch is not acting right so we need to tear into that in the morning and see what the problem is there. Still lots to do but we're closer than we were yesterday.

i-q6kbnRG-X2.jpg


Our punch list is down to one page. That's progress.

Gregor
 

Hostyle

Well-known member
Joined
May 8, 2014
Messages
272
Location
Geldrop (NL)
So you might be right. I hope not but maybe.

More importantly I want the chance to find out.

Gregor

I'm hoping with you! And in any case, it's a racer, not a tourer. Comfort's not an option :p

Besided, you've got to leave some work in a backlog for a possible V2. Would be boring if everything was done right the first time round.

Says I, who's dreading fitting a new handle bar to my bike :shocking:

Grtz, Erik
 

zmotorsports

ALLIANCE MEMBER
Joined
Oct 20, 2009
Messages
21,427
Location
Northern Utah
I
i-q6kbnRG-X2.jpg


Our punch list is down to one page. That's progress.

Gregor

THAT is always a good feeling but also where much of the work comes from.:lol_hitti

Bike is looking great Gregor. I can relate to having your mentor in your shop. Treasure that time with him and don't be afraid to let him know you appreciate the opportunity to learn from him. I lost my mentor nearly 3 years ago and always thought we would have more time to tinker on things and hang out but he was taken away too soon and now I find myself wishing he was still around to critique my work and give me pointers.
 
OP
S

sakurama

Well-known member
Joined
Oct 10, 2010
Messages
1,458
Location
Portland - the cool one.
Bike is looking great Gregor. I can relate to having your mentor in your shop. Treasure that time with him and don't be afraid to let him know you appreciate the opportunity to learn from him. I lost my mentor nearly 3 years ago and always thought we would have more time to tinker on things and hang out but he was taken away too soon and now I find myself wishing he was still around to critique my work and give me pointers.

Yes! We both recognize this crazy moment when we both have bikes in the same show and also are getting the chance to work together. Part of the reason that I decided to throw a big party tonight - to celebrate this moment. Sort of an inconvenient time but we'll figure it out.

Okay, from here on out I'm not going to have even a minute for an update. Watch on Instagram as I'll try to keep that going.

Gregor
 

mayerryan

Member
Joined
Jul 31, 2019
Messages
7
Location
NEPA
Cant wait to see the final product! I've followed along for awhile and gone through all post. You are a true craftsman! I aspire to be as thorough and meticulous as you are, your work always amazes me!
 

wmrra13

Well-known member
Joined
Apr 28, 2008
Messages
93
Location
PNW
Hi, I've been following and even made a few comments on IG (Tyler-san) but, I missed how you were dealing with the carb/hole in that beautifully painted fuel tank issue. Looks like you got the best possible help at just the right time.

The bike is super cool but, I have no idea how you're able to do the build AND document it on multiple mediums while on a time crunch. I really do appreciate the content.

I hope to see the bike in person this weekend, I entered the "Pull Start" race but, I've also got a lot going on and I'm not sure if I can make it happen.

-Tyler
 
Last edited:

cfloren

Member
Joined
Dec 14, 2008
Messages
16
Location
Torrance, CA
Good luck with the final push and thanks so much for sharing. It's been fun to follow on IG and GJ simultaneously and see the differences in your comments and narration between the two media. The bike is looking rad.
 
OP
S

sakurama

Well-known member
Joined
Oct 10, 2010
Messages
1,458
Location
Portland - the cool one.
Great to watch on Instagram and see the bike doing so well. Congratulations Gregor.

Words can't quite describe how tired I am still now, after a day of rest. I also don't know that I can describe this weekend adequately but I will try.

So this little bike started with me sending Thor a photo of a frame as a joke and Thor sending me an actual entry to the 1 Show.

Sure, I thought, why not.

I only had one job lined up and I was only going to transfer parts from my other bike and maybe build a subframe. Well, like most things I kept pulling the stops and wanting to do more and better. I can't say when it happened but somewhere along the line I went from building a play bike to deciding I was going to build the most serious XR100 ever.

As the days ticked down it seemed exceedingly unlikely I'd be able to finish. In fact every single day leading up to the party I was convinced at the end of the day that this whole thing was folly and I'd never finish. In the morning I would would be rested with a better attitude and think, "maybe, just maybe, we can do it"

i-dRvWm8v-X2.jpg


So Thursday night I'd planned this big party to start at 6 and of course I'd hoped to have the bike finished. Pretty much all my plans hinged on absolutely nothing going wrong.

Lots of things went wrong.

Around noon as we worked on the bike Scott noticed that the clutch seemed to not work very well. I assumed that it was because I'd the heavy duty springs in the stock clutch. Well, when we put the bike on a stand the kickstart was moving with the wheel. Very wrong.

i-SK3B6ff-X2.jpg


My friend Simon came over to help too - thanks Simon.

Around 1pm we came to the conclusion that something was wrong and I needed to pull the engine because the frame precluded pulling the side cover (tsk, tsk Scott) and so I pulled the motor, pulled the clutch and then, with the gears still not seeming to be working right I had to pull the entire motor down and split the cases.

I split the damn cases with 4 hours until guests arrived.

It's a good thing I did because I discovered that I'd not tightened the oil pump bolts. I also found that I'd assembled the kickstart return spring wrong. Lastly the heavy duty clutch springs bound up and that was the reason the clutch didn't work.

I replaced the springs with stock ones figuring I'd toast the stock clutch in one weekend but oh well and I buttoned up the entire motor and was just about to put it back in the bike when the FedEx guy showed up with the replacement 5 plate clutch.

I then proceeded to tear the clutch side down again and install the 5 plate with 3 hours to go until guests arrived. Then we put the motor back in the frame and put the body work on the bike and while Scott cleaned up the shop I went and showered 10 minutes before guests started to show up.

I was fully frazzled all day and there's no way I could pulled off the party but Lara and Judiaann both stepped up and took me out of the equation and made the decisions for the party.

Here is where you should see a photo of this amazing party, our house filled with guests and everyone having a truly great time. You won't see that because I didn't take any photos.

Sorry.

I was sort of amazed at who all showed up - it was, as described by one of the guys from Nova Motorcycles, an amazing group of smart people who pay attention to small details. I couldn't do better than that.

A friend who is the marketing director of BMW NA arrived with Roland Stocker - BMW Motorad design director and the Project Leader for the R9T and his very attractive younger girlfriend. Or so I thought. I was a bit blown away to have such an important BMW executive at my house but Roland is a very relaxed guy and was just having the best time at the party.

Somehow as the evening went on I realized that Rolands "girlfriend" was not his girlfriend but the lead chassis engineer for BMW motorcycles. I was both embarrassed to have made my assumption and glad I hadn't made a fool of myself! Sara is probably pretty young for her position but she is funny, aware and exceedingly smart about motorcycles.

i-dMg2xCQ-X2.jpg


At one point in the party I went into the garage to find Kyle wet sanding and polishing the paint on the bike. He did a bonkers amazing job - it was like glass.

Roland and Sara both said they absolutely loved my little tracker and picked out all sorts of details they liked. They spent a huge amount of time pouring over Scott's BMW which was with my BMW in the living room. Saul Koll showed up, Sean Chaney from Vertigo (who you know here), Ben and even Ryan from Baisley HP along with a few dozen more people. We had a taco truck cater the event and it was a pretty amazing party.

i-7NcZp8H-X2.jpg


As the party wound down we migrated to the garage and started to set the suspension up for Scott. He was super excited to be the rider on the bike that he had been following along on for the last month.

Also that night my friends Jamie, Kerry and Tom showed up as they were staying the weekend with us.

i-Hm2DZG7-X2.jpg


The next morning we had coffee and Scott came over to help button up the bike. We still hadn't started it but thought we'd have until 5pm or so to get it running All we had to do was set the timing basically. Kerry joked that she was retired but offered to jump in and help tie up lose ends.

We put in gas and bumped the bike. The compression is way too high to kick start. It started but ran really poorly. It would rev a little but then fall on it's face. It felt like gas starvation.

i-Bkmg4hh-X2.jpg


Now I want to take a moment to introduce you to the true hero of the whole weekend. Kerry is a Ducati Master Mechanic - there are only 40 in the USA and only two women in the world. Before motorcycles she was a NASCAR mechanic. She's also funny, cute, unflappable and relentlessly optimistic in addition to being the best mechanic I've ever met in my entire life.

I only knew a little of this before this weekend as we'd only had a few dinners together and I knew her mostly from her Instagram (Velocita Moto) and from Jamie's stories as they raced together and she was Jamie's race mechanic.

Well, as you can see in that photo it was raining and Kerry was smiling and changing needle hieghts on the street. After a while of not being able to get the bike to run despite moving the timing from 27 to 40 degrees and adjusting every thing we could on the carb we realized that load in was actually at 2pm and it was 2:30.

It was time to throw in the towel. We had worked all day trying to get the bike to run and nothing made any difference. I texted Scott that his ride wasn't going to be running and we were going to pull out of the race. I was sad but also so tired I just didn't care anymore. I was spent.

We dropped the bike at the show and hung out for the big opening night party. Sara joined us for dinner and we had a great evening.

i-KfrnVTx-X2.jpg


That is Roland Sands at the back of the bike. He remembered me from the BMW last year and told me he loved the XR100 - that was quite the compliment - to be remembered as a builder by Roland Sands. What he doesn't remember is we used to race against each other 18 years ago.

The next morning I got up early and was having coffee with Kerry in front of a nice fire. We had nothing to do for the whole day with the bike not running. I was really upset at not being able to race and was saying that if we'd had more time maybe we could get it running.

Kerry said, "Well, why don't we try? I'm sure we can figure it out - it would be a lot more fun to try to get the bike running than just sitting around all day"

Really? Are you being serious Kerry? "Absolutely!" she says.

And with that I went out to the garage in my pajamas and started gathering tools and pulling parts off my other XR. My optimism had been beaten down so many times on this build that I don't think I could have mustered the energy but Kerry gave me hope. I called Scott and he thought I was crazy - he'd given up as well but said he'd come by to see us later.

We headed to the venue and discovered hundreds of racers in a makeshift pit in the parking lot. We met up with Scott (Rounds our rider) and proceeded to spend the next 10 hours working on the bike. We swapped carbs, we swapped jets, we changed timing and we did it all in the rain, outside on cold wet pavement in a parking lot. After several practices and hundreds of changes everyone was giving up.

I need to insert here that we were outside in a parking lot but every time Scott went to practice we had to run across the street, through the whole event, up the stairs and into the grand stands. We'd wait for him and then run all the way back. We did that about a dozen times or more.

As the day wore on everyone was convinced it was somehow carb related or timing and finally I suggested swapping the CDI box for a stock one I'd tossed in the parts. Everyone rolled their eyes but I insisted as the issue was the same all the time - the bike wouldn't rev out. Low and behold the bike worked.

Then I suggested going back to the Lectron and everyone rolled their eyes again. Don't change too many things all at once! We know it works - leave it! But I had felt how much power the Lectron had given it before and knew it would work. The Mikuni was weak.

Kerry is a machine. She is never flustered, never bothered. Once I made the decision she swapped the carb over which meant cables, throttle, intake, gaskets, filter... a lot of things.

Suddenly, with no practices left, the bike was working. The bike still felt like it cut out but we reasoned that this was a stock CDI with a very low rev limit - maybe 7-8000 whereas the aftermarket one was supposed to allow it to rev to 14,000. We were just slamming into the limiter while massive power was building.

The track was super bumpy. Like bumps and dips 6-10" deep and all night long travel bikes were cleaning up. Scott lined up in his race and got the hole shot. He lead for almost a whole lap until a CRF230 dirt bike passed him on the bumps. That bike was absolutely NOT legal in our class which has the rule of 150cc air cooled. The suspension was a big advantage but so was a motor 50% larger than the class limit.

In the end we took second to an illegal bike. It was bittersweet because we did so great against all odds but at the same time we really should have won. We would have protested but there was no one around to protest to and we were all too beat to make the fuss that was needed.

Sorry for the lack of photos - there's plenty of video on Instagram and we tried out doing live on Instagram which was pretty interesting to get this instant feedback loop on the bike and the troubles. Quite a few people suggested timing and maybe they meant the CDI but we'd changed the timing so much we discounted that.

Yesterday we loaded the bike up and headed home. Scott (Kolb) came by today to help clean the shop and he helped tune up the Bridgeport a little.

Before I clean the bike I thought I'd take some photos of it in it's battle worn state.

i-SQQGcR6-X2.jpg


i-HqJwzR9-X2.jpg


i-vHgKBFH-X2.jpg


i-RP2HRTQ-X2.jpg


i-NC3rKmJ-X2.jpg


i-JWJCpsg-X2.jpg


i-ZzLBZhZ-X2.jpg


I don't know that I'd have the energy to do that weekend again. It was amazing but also exhausting - crushing defeats and exhilarating highs. It was intense.

I'm sorry I didn't do the normal sort of job documenting the process but there was never the time and the time I did have I was putting into Instagram. It was an intense build - one I honestly didn't think I'd get finished.

But we did. And for my money we won our race weekend by having the most amazing team come together and pull off a completely unlikely miracle - despite the #2 on our cheap plastic trophy, or perhaps in spite of it.

Gregor
 
Last edited:
To avoid these ads, REGISTER NOW!
Top Bottom