Bridges and Mecanum Wheels

[jsmyth]

the bridge is made out of polycarbonate, the rubber on the mecanum wheels will most likely cause more friction on this surface. sense these wheels rely on a lack of some friction for forward movment, will this increase in friction cause your robots from moving across the bridge or possibly slow you down.

[Ether]

Originally Posted by jsmyth

sense these wheels rely on a lack of some friction for forward movment

This is a common misunderstanding. They do not rely on a lack of friction. See Post #12 earlier in this thread.

For more detailed explanation, there's lots of info here.

[maxwellt]

my team tested if mechcanum wheels could drive on the ramps which is made from white board material and all the wheels did was slide off of the white board so which means Mechcanum wheels will have no traction what so ever on the ramps, so they are not the way to go for the ramps

[372 lives on]

Originally Posted by Djur

Team 2084 just tested out 120-lb robot from last year on a full-scale, functional bridge a mentor made for us. We could barely crabwalk (move laterally) up it, but the robot is really imbalanced, so that's not as large of an issue. The bridge was also surfaced with fiberboard, which at after a rough test we determined to have about 1/3 the CoF as HPDE like Lexan.

We'll also be getting a 48"x88" HDPE board soon, so we'll resurface the ramp and run the test again, but I can conclude that mecaums won't have too much trouble on the bridge.

Originally Posted by maxwellt

my team tested if mechcanum wheels could drive on the ramps which is made from white board material and all the wheels did was slide off of the white board so which means Mechcanum wheels will have no traction what so ever on the ramps, so they are not the way to go for the ramps

could you two or other teams possible post a video so we can see. we do not have the resources to build a ramp quickly and need to see what it looks like.