Quote:
Originally Posted by JoshD99
We are building a West Coast Drive chassis for our t-shirt robot. We have never done this before, but we think we know what we're doing. The only problem is that the gearboxes we're using, if we mount them directly to the wheel, will drag on the floor, as we are using 4 inch wheels. What can we do to fix this? Here are the gearboxes we're using http://www.vexrobotics.com/vexpro/ge...reduction.html
Thanks!  |
From experience, I would advise against using that specific gearbox. One of the internal bearings slides out quite easily and can cause the drive shaft to fail on the snap ring groove. If you haven't already purchased it, switch to another VEX gearbox like the WCP 3-CIM single stage, or the Vex Pro 3 CIM Ballshifter. Otherwise your options are to get bigger wheels (good idea for a t-shirt cannon anyways IMO), or to raise the gearbox and drive all the wheels with chain or belts. While this removes direct drive capability inherent to WCD, the other aspects of a WCD will remain the same without a dramatic change (with the exception of COG, which will be higher )
As mentioned before, machining your own gearboxes is also possible. My team ran a single stage 3-CIM gearbox geared for 16 FPS in a direct drive setup. They were very over-built, but rock solid throughout the season.
https://www.youtube.com/watch?v=feS_KxnsZ8s