To avoid these ads, REGISTER NOW!

Help me design a cycling trainer "cart"

pgray007

Well-known member
Joined
Jul 25, 2007
Messages
573
Location
Charlotte, NC area
I'm trying to figure out how to make my cycling trainer setup "mobile," so it can be rolled around my shop and moved out of the way when I'm converting from fitness mode to woodworking mode (yes, I have a strange and divergent collection of hobbies).

For the unfamiliar, a cycling "trainer" is basically a device that attaches to the back of the bicycle, in my case replacing the rear wheel, that allows you to spend endless hours peddling and going absolutely nowhere. The main benefits are 1) Getting in cycle time during the winter 2) Being able to perform very specific workouts that would be difficult on the road and 3) Avoiding people on the roads that don't share my fondness for cycling or cyclists. My setup looks like this:



The actual trainer weights 46lbs, my bike checks in at around 18lbs, and the lumpy, ungainly glob of flesh atop the contraption is currently clocking in around 209lbs, so a "cart" would need to support around 300 lbs of "stuff" that's actively moving, and in some cases applying some pretty significant (for me, anyway) force in multiple directions.

My initial thoughts, using wood since I can't weld, were 2 3/4" pieces of plywood, glued and screwed, as a "platform" for the whole deal with some type of casters attached. Probably about the size of the black mat in the picture that catches my profuse sweat. I've seen wheels that can be "retracted" up for large tools, so the tool itself rests on the ground rather than the caster, but I have no idea what these are called or if this would be the best idea here.

Ideally I might also want to create some sort of contraption that holds the fan a bit higher, and/or offers a small flat "desk" to stash the TV remote and snacks (some sessions are 4-5 hours so you need to eat).

I've seen unistrut and similar (never used it) so I'm not sure if something like that would be better than my plywood and wheels idea, and a bunch of googling and talking to bicycle people has me coming up empty, so any ideas are welcome.

Here's a closeup of the trainer portion. It's about a 10-15 minute exercise to take the bike off the trainer, remount the rear wheel, and fold/move everything, but if I could make that 10-15 seconds to just wheel the whole deal away that would be awesome.



Thanks!!
 
To avoid these ads, REGISTER NOW!

matt_i

Well-known member
Joined
Mar 14, 2008
Messages
10,753
Location
SE Michigan
Is there a reason you can't just pick it up by the top tube and carry it, whole? 46# isn't that bad depending on how far you have to go.

Imo anything that's sheet-based with wheels presents the problems of having to retract or remove them to get back to solid footing.

Have you considered a mechanical "butler" like the fusion of an engine build stand and a forklift with about 3" of screw-based travel just enough to pick up the top tube and support the load while it rolls it around?

My Dad has put a lot of hours on one of those, much simpler with dual squirrel cage fans. But, he put on an old Schwinn 10 speed which got rusted out really fast from all the sweat flying around, and kept his good bike ready for road-use. Made sense in not wearing out a good bike just to get an aerobic workout.
 
OP
P

pgray007

Well-known member
Joined
Jul 25, 2007
Messages
573
Location
Charlotte, NC area
Is there a reason you can't just pick it up by the top tube and carry it, whole? 46# isn't that bad depending on how far you have to go.

Imo anything that's sheet-based with wheels presents the problems of having to retract or remove them to get back to solid footing.

Have you considered a mechanical "butler" like the fusion of an engine build stand and a forklift with about 3" of screw-based travel just enough to pick up the top tube and support the load while it rolls it around?

My Dad has put a lot of hours on one of those, much simpler with dual squirrel cage fans. But, he put on an old Schwinn 10 speed which got rusted out really fast from all the sweat flying around, and kept his good bike ready for road-use. Made sense in not wearing out a good bike just to get an aerobic workout.

I'll check out the "butler" idea... that sounds interesting. I'm hesitant to pickup by the frame since it's carbon fiber, and the trainer is awkwardly weighted (the big circle closest to the floor is essentially a giant weight with magnets in it, so you'd be torqueing the frame sideways and putting some very different stresses on it than normal road/trainer use.

I also like the "beater bike" idea and have one that a friend cast off so I don't have to "salt up" my nice bike any more than I already have. Even with the beater, I still don't think I could just wrangle it around by the frame since the only attachment point is at the dropouts.
 

Playwme

Well-known member
Joined
Sep 13, 2012
Messages
2,032
Location
The Lucky Country Down Under
I'd get 3 little dollies that clip onto the trainer tubes. Lift a side at a time and clip the dollies on, wheel out of the way. Front of the bike already has a wheel in it.
 

bullnerd

Well-known member
Joined
Sep 17, 2012
Messages
5,690
Location
Jersey
That's not a trainer...this is a trainer! (in my best Dundee voice)

Get one of these, pop the bike on and off, no monkey business with the back wheel when you want to ride.

https://goo.gl/images/weQRz6

I made one from some angle steel and aluminum tube. It adjusts from my BMX bike (want a real work out!) to my mountain bike.

Still cant wheelie on that friggin thing!

Heres one right up the road from charlette,

https://greensboro.craigslist.org/hab/5941120725.html
 
Last edited:

rodsnratfinks

Well-known member
Joined
Jan 13, 2015
Messages
1,397
Location
California
That's not a trainer...this is a trainer! (in my best Dundee voice)

Get one of these, pop the bike on and off, no monkey business with the back wheel when you want to ride.

https://goo.gl/images/weQRz6

I made one from some angle steel and aluminum tube. It adjusts from my BMX bike (want a real work out!) to my mountain bike.

Still cant wheelie on that friggin thing!

Heres one right up the road from charlette,

https://greensboro.craigslist.org/hab/5941120725.html
Those are rollers. They have a different purpose than a stationary trainer.
 

Hchrist

Well-known member
Joined
Dec 8, 2016
Messages
99
Location
S.E. NC
+1 for a set of rollers. If you can find a set of kreitler rollers you will like them. Large diameter. Much less boring than the stationary trainers. You can do anything on them than you can do on yours except take a mental break.

Galaxy S4, Slimkat
If I wasn't married I'd quit fishing :)
 
OP
P

pgray007

Well-known member
Joined
Jul 25, 2007
Messages
573
Location
Charlotte, NC area
I'm not coordinated enough for rollers! In all semi-seriousness the KICKR does some neat tricks with power and Bluetooth/ant+. For example this AM I took a "virtual" ride in London via Zwift and you can do highly structured power-based workouts using TrainerRoad. Sometimes I just zone out and binge watch Netflix when I'm doing a long session, so I'd probably stick with the current trainer. Other than doing the wheel dance I'm very happy with it, and if it's cool enough for Froomey....


Sent from my iPhone using Tapatalk
 
To avoid these ads, REGISTER NOW!

bullnerd

Well-known member
Joined
Sep 17, 2012
Messages
5,690
Location
Jersey
Yeah, that sounds like a nice rig.

I think the plywood idea would work. (that's what id do at least)

Just under the trainer or under the whole bike would be the question.

You can adjust the height of the trainer right? So just a small platform for the trainer would probably work.

Have you looked at McMaster Carr for some drop down caster/feet options?
They have a lot of them. Or Carr Lane or Grainger?
 

RWorth

Well-known member
Joined
Aug 29, 2016
Messages
592
Location
Cape Cod , Mass.
Similar to what I have in mind. I'd replace the jacks/pads on the outriggers with locking casters, the key factor being the locking capability. Just unlock and move as desired. The other jacks/pads would also need replacement with casters that do not lock.

locking casters don't work for ****, you're better off with those drop casters or use regular casters and a drop down foot. I've never had a locking caster that held a heavy tool in place, so I don't think they're gonna work if you're pedelin' your **** off.:)
 

kellymc

Well-known member
Joined
Feb 26, 2010
Messages
229
Slightly off topic, I've got the same trainer, are you on Zwift yet? If not I suggest you take a look at it, makes indoor riding a little more tolerable
 

bullnerd

Well-known member
Joined
Sep 17, 2012
Messages
5,690
Location
Jersey
locking casters don't work for ****, you're better off with those drop casters or use regular casters and a drop down foot. I've never had a locking caster that held a heavy tool in place, so I don't think they're gonna work if you're pedelin' your **** off.:)

That's what I was thinking. I would go with the smallest casters, no weight really just to move it around. Then use a drop down foot for riding. Probem is, the drop down feet ive seen are pretty tall, which would raise the whole thing up too high.

Have to get creative with the drop down feet. First thing that pops into my head is those toggle clamp things, the ones that push a rod out.

EDIT: like this...1-1/2 of travel, $18! Drill a hole in the plywood and bolt it down.

https://www.mcmaster.com/#5093A63
 
Last edited:
OP
P

pgray007

Well-known member
Joined
Jul 25, 2007
Messages
573
Location
Charlotte, NC area
Help me design a cycling trainer "cart"

Slightly off topic, I've got the same trainer, are you on Zwift yet? If not I suggest you take a look at it, makes indoor riding a little more tolerable



On Zwift and TrainerRoad like a cheap suit. Dare I say, they make the trainer not only bearable but "fun" in the right conditions.

I haven't done a group ride on Zwift yet though, but I want to give that a try.


Sent from my iPhone using Tapatalk
 
To avoid these ads, REGISTER NOW!
Top Bottom