American Robot Episode 3

[Rob]

Originally Posted by Stonefan5271138

Your series are indeed awesome. Your robot is also quite awesome, turns so easily in the video. Our robot has difficulty turning because of the conveyor belt material we got to increase friction works all too well. But I have a question, for your middle wheel, how did you lower it? Our team tried having the chasis low rider by flipping it over, but when we try, the hole they have for the bolt becomes higher, so it is useless. Did you make your own mount for that wheel, and if so how much lower is it?

Thanks for the kind words about our cinematic excapades, as well as our chassis.

I also encountered the problem with the middle hole being improperly aligned when we flipped the chassis. It wasn't so bad because we had to enlarge the holes anyway to accomodate bushings. We just threw the frame on a mill and made new holes that were off center (lower) than the existing frame holes. Because the middle one was so far off, we just used one of the ajacent holes, so our middle wheel is actually 1" off center. We also lowered the middle wheel by 1/16" to make steering a bit easier.You could probably also simply make a bracket that holds the bearing or bushing and place the hole at whatever height you like.

Also, if you have too much friction when turning, you may consider changing the material on one set of wheels.

Best of luck!

Rob