Monster Humvee

Buzzbait · Post by **Buzzbait** » Wed Jun 04, 2003 9:55 pm

This is a little something I've been playing with for the last couple months. It's kind of a work in progress. I'm using a Motorworks chassis, which has a reinforced rear axle, after stripping out the rear axle well on a basic Bit clone. Those monster wheels are heavy!!! The body is from an H1-Micro hummer. I should soon have the body mounted on a shock absorber, so it bounces up and down on rough terrain.

Post by **CaboWabo** » Wed Jun 04, 2003 10:34 pm

that'll be kick arse when it's bouncing all around rough ridin! lol

what are those tires? those look familiar.
grippy rubber?

Stoli · Post by **Stoli** » Wed Jun 04, 2003 10:36 pm

they look like the tires off my son's Tonka Truck

sessiz · Post by **sessiz** » Wed Jun 04, 2003 10:36 pm

Nice hummy you gots there. I wanna know what tires those are too. They look sorta like the lego wheels but bigger.

Post by **CaboWabo** » Wed Jun 04, 2003 10:44 pm

I know, I wish I could remember what the hell it was I used to play with that had those type tires. I remember them being rather rubbery and I'd squish those grooves together cuz it felt good like mud between your toes

noxorc · Post by **noxorc** » Thu Jun 05, 2003 6:01 am

Great Job.. gotta have a hummer in the garage.

mines black...I like the red.

that shiat looks like it could go anywhere...

-nox

Buzzbait · Post by **Buzzbait** » Thu Jun 05, 2003 6:39 am

Thanks guys. The wheels are from small Lego sets I found on clearance for $1.49. The sets were supposed to build some sort of Lego ATVs. The rubber is very grippy, which is actually a bit of a problem. Whenever the tires rub against the chassis while turning, the whole car wants to come to a screeching halt. I’ve still got some chassis modifications to do, to see if I can fix this. The wheels are heavy enough that some other steering issues crop up, but nothing that can’t be overcome. And obviously, with such a wide wheelbase, the Hummer doesn’t exactly turn on a dime. It turns more sharply than I expected, but not on a dime. The upside is that the Hummer is fast!!! Those huge wheels don’t slow this puppy down one bit. That Motorworks pcb must put out some real juice to propel this thing so fast. The old Bit clone chassis I originally used required a dual-cell mod to make it run. A single cell Motorworks moves those big wheels faster than the dual cell Bit clone.

This is my long term project car that I work on now and then, when I get a bit of inspiration. DarkTari’s post a couple days ago reminded me of it, so I pulled it out. Actually, it was the wish for a bad-ass Hummer that got me into this hobby in the first place. RC was fun, and I massively craved a big old Hummer to run over stuff with. The vehicle will be a real butt-kicker when its finished. Maybe I’ll work on it this next week, and see if I can finish it up before the contest ends.

crazydave · Post by **crazydave** » Thu Jun 05, 2003 9:02 am

That looks really sweeet. I love monster trucks, and have one on my "To do" list, but I'm still looking for the right tires.

You know taller tires will give you a higher "rollout ratio". Which gives the effect of changing your gear ratio at the tires. 1/8th scale pan car racers get all technical about this stuff and calculate rollout ratio as part of their setup, even going so far as to shave their tires down to achieve the "ideal" rollout ratio.

You should do a search and try to find the formula for rollout ratios, and find out the difference between those wheels, and stock bit wheels, or maybe I'll end up doing that since I'm the one that's curious. What size are those wheels?

Buzzbait · Post by **Buzzbait** » Thu Jun 05, 2003 9:12 am

Interesting stuff. The outside diameter of the wheels is .8125".