Mini Dump Truck Build

[Mr.N]

There are two main issues with using a complete 14 bolt, even if it's narrowed. First, it's ridiculously heavy. Just the tires and wheels alone are going to make up about 700lbs of this build. I don't want this thing to weigh more than 2,000lbs. Second, the center section is so wide, after I narrow it to what I need, it's likely I won't have any tube area left to mount it to the suspension.

then wouldn't a 9" rear axle fit you needs better as the center section part?
Have you sourced the axle shafts yet for the 10 bolt? Price?

 

[srmofo]

That's not a bad idea. May have to make a trip to the junk yard and see what I can find. I do like having the split rim because I can take the tire on and off by myself. That will be helpful throughout this build and when I go to paint.

I did get one mounted and inflated so I can take measurements and get back in the CAD model.

Ryan

I just want to make sure you are aware of the inherent dangers of inflating split rim tires. They put them in a cage for a reason. I'm not saying you cant/ or not to do it, just make sure you are taking the necessary precautions.

Unless there is something different about hummer wheels I am not aware of, but Im sure someone will chime in and let me know

on a side note I did find a pretty cool video of these things exploding on high speed film

and this

 

[Duct Tape Man]

Subscribed, this thing is going to be cool! Can't wait to see more progress...

 

[Briggs]

Looking forward to this one!!

 

[zebrabeefj40]

I just want to make sure you are aware of the inherent dangers of inflating split rim tires. They put them in a cage for a reason. I'm not saying you cant/ or not to do it, just make sure you are taking the necessary precautions.

Unless there is something different about hummer wheels I am not aware of, but Im sure someone will chime in and let me know

on a side note I did find a pretty cool video of these things exploding on high speed film

and this

Hummer wheels are not the "split rims" of the old days. Hummer wheel halves are bolted together with either 8 or 12 bolts - depends on the year of the wheel. They can't explode like the old split rims do. In post #37 above you can see the 12 bolts that hold the wheel halves together.

Nick

 

[kf4zht]

Hummer wheels are not the "split rims" of the old days. Hummer wheel halves are bolted together with either 8 or 12 bolts - depends on the year of the wheel. They can't explode like the old split rims do. In post #37 above you can see the 12 bolts that hold the wheel halves together.

Nick

Yeah, hummer wheels are fairly safe. Unless you were able to undo all the bolts while it was still pressurized there wouldn't be an explosion. The biggest issues I have seen is with improperly aligned/sized/welded centers but given the authors past history I'm sure he will over-do correctly.

 

[bluebolt]

Awaiting more cool fabrication Dozer! Loved your first build!

 

[WILD-BILL]

This is going to be EPIC!!!!!!!

 

[pennsylvaniaboy]

someone commented on the weight of a 14 bolt before and suggested a 9". If you are going to solid mount the axle, I would definitely use the 14 bolt. As to weight....i dont think thats a bad thing for a mini dump.

 

[emtmark]

Will the dump bed dump or be where the dump bed is


Sent from my iPhone using Tapatalk

 

[41ratrod]

This is going to be a great build thread. What gauge of steel are you going to use on the dump bed? And the 20hrp.engine is going to be gas or diesel.
How old are your boys. These big toys would be fun when I was a kid, but
with 5 brothers we would need the loader and lot more then 2 acres of land .

 

[CarterKraft]

Fabrication around a 9" with a mild steel housing will be much simpler than a 7.5" S-10 axles.

Don't listen to the Hummer wheel haters. They are tough as hell and easy to work with.

 

[dozerbuilder01]

given the authors past history I'm sure he will over-do correctly.

 

[dozerbuilder01]

As for the Hummer wheels, if they can handle a minimum 6,000 lb vehicle not counting cargo in combat conditions, I'm sure they will be fine for my project. Dually wheels would probably be easier but all I can find in a 16.5 diameter rim is only 6" wide. Too narrow. The skid steer tires have the right look for this project and they come in 16.5" sizes.

I've done a little more reading on the 7.5" S10 axle. Seems that people either run 1,000hp with slicks and have had no issues for the past 50 years or they put a small bag of groceries in the back one day and the axle fails so bad it tears the fabric of space. Reminds me a lot of opinions of the Dana 30 found in the majority of Jeeps. I have one. It's a high pinion with 4.56 gears. Mostly run 32s but last time I had 36s. I have seen them break first hand. For what I do and the style I drive, I've been fine. I know the limitations and I don't push it. And I have fun. I don't have the money or even really the need for a Dynatrac 60 or Currie RockJock axle. Then you need a stronger transfer case. Then beef up the frame rails. Then ditch the rear leafs for a 4 link. Then stronger engine. Etc. It adds up fast. So for now, I'm going to stick with the axles that I bought.

And since space is a premium, I decided to chop them up.

(More can be seen at http://www.minidozerbuild.com/p/rear-axle.html Scroll down to the latest update)

I left the tubes long until I decide what the final width is going to be. That will depend on how I rework the wheels. I have an idea but I need to build a rotary weld positioner. Always wanted one. I came up with a pretty good plan using fairly cheap parts. I may write a real nice set of plans and try and sell them for $10 or $15. Do a little fund raising to try and offset the cost of this build. We'll see if it turns out as good as I think.

 

[dozerbuilder01]

This is going to be a great build thread. What gauge of steel are you going to use on the dump bed? And the 20hrp.engine is going to be gas or diesel.
How old are your boys. These big toys would be fun when I was a kid, but
with 5 brothers we would need the loader and lot more then 2 acres of land .

Probably 18 or 16 gauge sheet. 1/8" wall on the tubing. Engine will most likely be gas. Diesel engines are just too expensive. And a lot of them are too big. Space where the engine is going is already tight.

My boys are 4 and 1-1/2. They both like riding it. I couldn't get the younger one off it the other day.

 

[LG63]

Engine will most likely be gas. Diesel engines are just too expensive. And a lot of them are too big. Space where the engine is going is already tight.

Here's a vote for a low speed gas engine like a Wisconsin AGN or TJD/THD. Relatively easy to find for cheap and tons of bottom end torque.

 

[mrolds88]

Dually wheels would probably be easier but all I can find in a 16.5 diameter rim is only 6" wide. Too narrow.

You SHOULD be able to recenter the Hummer wheels with the Dually centers. yeah the 16.5 dually wheels are about 6 inches wide.

 

[RustnGrease]

Dozer, Loved your original dozer build and following this one. If you need pictures or measurements from real trucks let me know.

 

[fourjeepin]

Oh, man....is this thing not built yet?!?

 

[PugetDude]

Subscribed! Loved the dozer build.

 

[pepi]

then wouldn't a 9" rear axle fit you needs better as the center section part?
Have you sourced the axle shafts yet for the 10 bolt? Price?

10 bolt is just fine for this project, 10 bolt or 9in, axels are axels like drive shafts no big deal. You ever wrestled with a 9'' .... heavy as hell

 

[kbs2244]

With axles like that, just how "mini" is this thing going to be?
(Of course, the kid is getting bigger too.)

 

[Mr.N]

10 bolt is just fine for this project, 10 bolt or 9in, axels are axels like drive shafts no big deal. You ever wrestled with a 9'' .... heavy as hell

I've rebuilt several axles, even shortened them. Axles are not just axles, but let's not muddy up this thread.
9" is the lightest one of the bunch. I was just trying to reduce time and cost.

 

[dozerbuilder01]

It's been a while. I've been working on a lot of different things. Just haven't had a lot of time to update. I will have a better update soon. In the meantime, here are a few pictures.

 

[nine4gmc]

 

[bad_idea]

details on the weld positioner? looks good

 

[G_P]

This is amazing. Subscribed!

 

[whateg01]

that is going to be pretty awesome! I guess this isn't the popular opinion, but I like your idea of using those wheels and spacers, vs. dually wheels. Since this is largely about looking the part, the wheels should have more of an industrial look than a commercially available, mass produced, vehicle look. In fact, I'd be tempted to build a new hub completely and then use a 10 bolt wheel center so that the wheel center is mostly flat out to the rim. In fact, that might put the lugs out near the wheel, too, which as stated before would help it look the part. You could balance the whole thing, but since you are using a 20 HP engine, it isn't likely to be doing 60 mph down the highway, so that probably isn't even a factor.

can't wait to see more!

Dave

 

[bulletpruf]

Ditto!!!

 

[ford33]

This is going to be good! Happy to hear you are making progress.

 

[In2toys]

sweeeet

 

[sleepy127]

More pictures of the weld positioner. That looks nice

 

[CNGsaves]

Those tires and wheels are Bad *** !!!

Those bolt together rims and tires available by the thousands on GovLiquidation.com

Is that where you got yours ??

 

[f150skidoo]

Really looking forward to this build, I run those same tires on my skid steer and there pretty awesome. You will bend the axle before those tires run out of capacity.

 

[madoc1]

will be following this. have yet read the dozer thread, but rest assured i will. just the wheel posi thing hooked me. nice work.

jim

 

[mccullin]

Subscribed.

 

[dozerbuilder01]

Those tires and wheels are Bad *** !!!

Those bolt together rims and tires available by the thousands on GovLiquidation.com

Is that where you got yours ??

I actually got them from a guy on ebay. He doesn't list the 12 bolt rims. You have to call him. But for $25 a piece and I don't have to go some where to mount the tires, I was sold. I'll have to check out that website though.

 

[dozerbuilder01]

Here are a few more pictures of the weld positioner. I still need to document it a little better and post a few videos. I built it for a few reasons. First, I like consistent welds. I like things to look factory built and I'm not always the steadiest welder. Second, I like making tools. I just need that one excuse (recenter hummer wheels) to build something. And as always, I do these projects to learn new things (electronics, arduino, thread cutting etc).

Some basis stats.
-It's adjustable from horizontal to vertical in 15 degree increments.
-It's driven by a 570 in-ounce stepper motor with a 3:1 sprocket reduction.
-It's control by an Arduino/stepper driver combo. It does 0-10 rpm in 0.1 rpm increments. 10 rpm is probably too much but it doesn't matter. I can make it whatever I want in the software.
-It uses a 2-1/4 x 8tpi spindle so I can swap from a 6" chuck to a faceplate. The lathe chuck is overkill in terms of strength but it was a lot cheaper than the weld specific, quick set welding chucks. Also, I finally cut threads on a lathe which was fun. Another thing learned.
-The electronics and motor are completely isolated from the frame.

Cut my very first threads. I made a few extra spindles that I may sell on ebay. The spindle is 2" so sprockets from surplus center slip right over it.

I wanted it to look good so I had a panel made from the same place that made the panels for the dozer.

Getting it dialed in a little bit tonight. Roughly 9.5" diameter section of 1/4" plate welded to the hummer wheel. Speed was 0.5 rpm. To me, the weld looks really good.

That is all for now.

 

[whateg01]

That is a nice looking weld. Guess I'm going to have to add a positioner to my list of tools to build! Can't wait for pics of the wheels in the tires.

Dave

 

[littleponderosa]

Damn, the dozer was awesome. Subbed.

Thanks for sharing.

Bill