Tank Treads
 

I was wondering where you can purchase treads for a tank drive. What sizes do they typically come in? How much do they normally run?

I was thinking about using the drive belts for harley davidson motorcycles for treads. I can cannot find any for one thing, and they probably are expensive

Re: Tank Treads
 

i looked on google real quick for "conveyor belt suppliers" and found this..
http://www.conveyor-belts-belting.com/
try looking in "package handling" or "light industrial", some of those materials look like they would stand up to our competetions.

just look around on google or something. I'll find out where we get ours from and post it later also.

Re: Tank Treads
 

www.brecoflex.com

amazing belts, we have run all the weeks of testing, a regional, an soon to be like 4 offseasons on our first set. They have some amazing traction, we were never pushed at BAE. they are also self tracking to prevent throwing belts.
http://www.chiefdelphi.com/forums/pi...&quiet=Verbose

Re: Tank Treads
 

which item are those in the catalog?

Re: Tank Treads
 

The biggest thing to keep in mind with tracks is the strength of the track. You don't wanna be blowin your belts. I suggest the brecoflex tracks also. Our team had quite a large amount of success with them this season. They are easy to work with and have awesome traction...almost too much traction. You just gotta be careful how much you put on the ground. In the past weve also used timing belts. They are okay but I'd take the brecoflex tracks of them anyday.

-Pat

Re: Tank Treads
 

What series and size of belts did you use from brecoflex? also did you have any problems turning on the carpet with the treads?
-Aaron

Re: Tank Treads
 

we did have a problem turning...however the reason was we had so much of a footprint on the carpet. we easily fixed that by increasing the center idler pulley of our drive. we are now able to turn on a dime and have an amazing amount of torque.

as for the series, ask Pat (team134guy) he should know. i dont know off the top of my head

Re: Tank Treads
 

According to my handy dandy Brecoflex binder, Linatex, Super grip, Correx gum, PVC Blue, Polyurethane, and a few others have the highest CoF's.

I could go through the whole catalog and tell you what your options are, but that'd take way too much time :D

Go to www.brecoflex.com and order one of their free product catalogs. They'll send you a binder with whatever inserts you choose. They sent me mine in two days, if I remember correctly, and they come with a wealth of information.

Re: Tank Treads
 

We used Brecoflex as well. We used used two "bogy" wheels on each track toward the center of the bot that were about 1/8 of an inch lower that the others. This greatly improves turning. We also used spring loaded tensioners to keep the tracks tight rather than having one sliding wheel that you lock in place. We've used this system for two years now and never had a belt come off or break.

Re: Tank Treads
 

these threads should help when choosing treads vs wheels

http://www.chiefdelphi.com/forums/sh...ht=tank+treads

http://www.chiefdelphi.com/forums/sh...ht=tank+treads



also if you are searching google for distributers...try searching for timing belts

Re: Tank Treads
 

I couldn't find a series number. I believe its a custom belt so this is what we have. We used a PVC base backed 75mm wide w/ I believe a polyurethane timing belt. We got the self aligning tooth assortment w/ two pulleys to match. Def use the pulleys. Theyre designed for this track and will save you some machine..SOME they are heavy so youll have to take some out. I'm not sure on the length....but you can figure out what you need.

You can use this catalog though. The selection is nearly endless, you can mix and match til you find what you like.

BTW we did have trouble turning. My suggestion is put a larger center idler in to help reduce the footprint. We went w/ i believe 4 one hundreths of an inch.

To keep tension we used a piece of threaded rod with the axle. The base was slotted so it could slide. Then just double nutted it. Illustrated below. n=nut O=axle

n
---
|
|
n
n
O
n
n
|
|
---
n







-Pat

Re: Tank Treads
 

1024 used treads from brecoflex for the past two year.

the picture is of this years tread:
http://www.chiefdelphi.com/forums/sh...ad.php?t=25346

as for turning on carpet the center metal pulley is lower creating a bow in the tread allowing us to turn on a dime.

Re: Tank Treads
 

Team 1097 has used treads since the forming of our team. Our origional treads were from a snowblower donated to us from Tahoe Sports and Motor. This year we used this website listed somewhere in the chiefdelphi discussion above: http://www.robotcombat.com/store_tanktreads.html They were basically modified forms of snowblower treads that you could buy seperately from the snowblower. We then machined some of the parts down for use on our bot. We ran out of time to machine the cogs, which would have been nice, since they were expensive. Just to give you an alternate option to Breco, which can be expensive. I think this entire year we were pushed once, maybe twice, and the treads have always been a major benefit for defensive strategies.

Re: Tank Treads
 

What exactly do you mean when you say you reaised the center pulley to decrease the footprint. IF you would like i can include a CAD drawing of what i have in mind as far as how we want to lay things out.

Re: Tank Treads
 

yes if you looked at the side of the bot, the middle idler pulley was set about a half an inch below the other two pulley, ccutting the footprint in half but making it turn