Author Topic: Good track system that works on carpet? (Read 4005 times)

Steve Joblin · « **on:** March 22, 2007, 06:47:32 PM »

I've been playing around with a multitude of configurations using Tamiya Tank Treads on a Parallax Boe-Bot (http://www.parallax.com/detail.asp?product_id=28106), but they keep derailing because I am driving it on carpet. Has anyone had experience with a tread system that is good for use on carpet? My robot is only about 8" long by 5" wide and uses two standard Futaba servos (modified for continuous rotation).

JesseWelling · « **Reply #1 on:** March 22, 2007, 07:06:18 PM »

havn't used them but you may want to look into them:
http://www.budgetrobotics.com/shop/?shop=1&cart=408639&cat=154&
http://www.lynxmotion.com/Category.aspx?CategoryID=94
http://www.trossenrobotics.com/store/p/3172-Robby-RP5-Chassis-Only.aspx

and maybe you could go to belt drive from the servo and use two wheels?
every thing in software would be the same (unless you accounted for friction of the treads and what not
but I wouldn't tackle that task with a Parallax any ways....)

hgordon · « **Reply #2 on:** March 22, 2007, 08:52:56 PM »

The Lego Technics tracks won't derail. We use a variation of that design on our robots.

Hal9000 · « **Reply #3 on:** March 23, 2007, 06:30:40 AM »

I think, for the sheer cheapness and wickedness of the technic tracks, this has become the track of choice for many many developers.

Namely, this one

http://www.active-robots.com/products/robots/surveyor-srv1.shtml

Admin · « **Reply #4 on:** March 27, 2007, 01:46:10 PM »

Ive used the lego tracks for several robots and have had only one problem with them.

You must make sure the 'wheels' are spaced apart just right. If too far, meaning the treads are too tight, they bend inward causing high friction losses on your motors. Perhaps if you use a metal shaft instead of a plastic lego shaft you might not have this problem . . .

hgordon · « **Reply #5 on:** March 28, 2007, 07:44:50 PM »

I'll second that comment - a difference of 0.050" in axle spacing can make a significant difference in loading on the drive motors with those treads.

Hal9000 · « **Reply #6 on:** March 29, 2007, 02:50:37 AM »

Actually, yeah, thirded. Although, I guess you are supposed to be using them with lego. But, that's not the point.

Yeah, that happens.

nanob0t · « **Reply #7 on:** March 29, 2007, 01:21:12 PM »

May I suggest my robot?

It's only about 3 feet long though

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Author Topic: Good track system that works on carpet? (Read 4005 times)

Steve Joblin

Good track system that works on carpet?

JesseWelling

Re: Good track system that works on carpet?

hgordon

Re: Good track system that works on carpet?

Hal9000

Re: Good track system that works on carpet?

Admin

Re: Good track system that works on carpet?

hgordon

Re: Good track system that works on carpet?

Hal9000

Re: Good track system that works on carpet?

nanob0t

Re: Good track system that works on carpet?

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