Quote:
Originally Posted by jpconnors9
Thanks for your input! When you say one transmission what exactly do you mean?
Should we put chain to all 6 wheels or should we just power 4? My mentor is saying that putting chain to all 6 is not necessary but I just don't know if he's right or not.
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While you technically don't have to power all the wheels, doing so will allow you more traction because all your weight would be on driven wheels. A couple years ago, we had the battery and a few other components over undriven wheels, so we lost several pushing matches. I'm not sure how to explain the physics behind this, but here goes. f=un (friction = coefficient of friction*normal force). The normal force at the drive wheels is basically the weight of your robot at that point. The more weight you have on your drive wheels the more traction you can get. Additionally, if you plan to go over the barrier, or possibly even the ramp, powering on the wheels will help prevent you from high centering (yes, there will be other factors, but everything helps).
Additionally, I think most teams use plaction wheels from Andymark for a tank drive.