Who is using 10" Pneumatic Wheels

[WizenedEE]

We're using 7.5 inch wheels (they said 8 inch...) because the 10 inch wheels were too heavy. We put omni wheels on the back, and it obviously turns great. However, when we tried it with the standard rubber wheels, the chassis would just bow up and it wouldn't move at all when trying to turn.

[2544HCRC]

We are using a 9" wheel from a supplier of scooter wheels and parts. They are about $40 each, come with the aluminum wheel, inner tube, tire, and a #25 pitch sprocket, and 10mm bearings installed. I'm a bit concerned with the turning. We are using a 6wd setup with a center drop.

[mayde]

If you have a 6 wheel chassis with 2 sets of omniwheels and 1 set of the pneumatic kind, turning isn't a problem at all.. our baby is drifting like vin diesel in an action movie. I'm not sure how an all pneumatic wheeled drive train would work out, however.

[onecoolc]

Originally Posted by mayde

If you have a 6 wheel chassis with 2 sets of omniwheels and 1 set of the pneumatic kind, turning isn't a problem at all.. our baby is drifting like vin diesel in an action movie. I'm not sure how an all pneumatic wheeled drive train would work out, however.

For clarification, we're using the Andymark 8" Pneumatic wheels in the center of a six wheel drive, with 8" Dualie Omni Wheels on both the front and back (also from Andymark).

And, yeah, she spins like a top. So far we've only tested the 'bot on linoleum, and she tends to drift quite a bit, but that won't be as big of an issue on carpet. With some practice the drive team should be able to handle it fine.

[mrnoble]

We are trying a slightly different configuration this year; six wheels (10" with a 1/4" drop in the center), driving only the rear and middle. We have had success with using painter's tape to cover tread on the front wheels to avoid sticking in years past, and will probably do something like that again. We are doing a lot of testing today, so we'll see what happens.

[MrBasse]

We had 6 harbor freight wheels mounted and running and had no problem with turning with a 1/4" drop. We had planned on articulating the center wheels to allow for a stable shooting platform, but when we built the whole thing it turned out to be a little heavy.

We are now running two of our pneumatic wheels in the center and 2011 kop wheels front and rear. Looks like it should be about the same performance, but it doesn't look as mean. Plus it weighs 40 lbs less, which is good if we want to attach anything that can do minor tasks like perhaps picking up an 8" foam ball and shooting it.

[ksafin]

we're using 10" pneumatics from harbor freight. They are our two front drive wheels and we have 2 casters on the back of the robot.

it turns pretty well, but that's all due to the casters.

If it was 4 pneumatics I can't say I know what would happen.

However, we had a team member sit on the robot and we noticed it drives much better under weight (the tires get more contact in the floor when pressed down).

I'd also suggest wearing them out a bit so the tread is flatter and, again, gets more contact with the floor.

[legogeek24]

We're using 8" pneumatic wheels, one in the center of each side of our frame. We'll be mounting casters on the front and back eventually, but just driving with the two wheels and nothing else, it handles great! We're flying right over the bump and climbing the bridge with no difficulty.

[Madison]

Originally Posted by legogeek24

We're using 8" pneumatic wheels, one in the center of each side of our frame. We'll be mounting casters on the front and back eventually, but just driving with the two wheels and nothing else, it handles great! We're flying right over the bump and climbing the bridge with no difficulty.

How do you get up the bridge with casters on each end?

[PAR_WIG1350]

Originally Posted by Madison

How do you get up the bridge with casters on each end?

Sounds like they have some type of suspension system with a considerable amount of travel (well, compared to last year, it would have been fairly normal in 2010), or they've overlooked something.

[striker]

We are using 10" pneumatic wheels. Six wheel drive and it turns great, goes over the bump too. Here is a video.

http://www.youtube.com/watch?v=2WV8Uw-5lqI

[camtunkpa]

222 is using 12.5" wheels

[Mk.32]

Originally Posted by striker

We are using 10" pneumatic wheels. Six wheel drive and it turns great, goes over the bump too. Here is a video.

http://www.youtube.com/watch?v=2WV8Uw-5lqI

How's driving on carpet?