Quote:
Originally Posted by Brandon Holley
Definitely look at team 357's designs in the Behind the Design books. They have already got this process nailed so borrowing some of their expertise would definitely be helpful.
|
I'm especially interested in more details on getting a dual-hardness roller. Since a hard roller doesn't provide much traction and a soft roller is too compliant, the ideal setup is a hard core and soft outer surface for the rollers. From what I read team 357 uses two different casting materials and from their pictures I can see team 2865 just used a hard PVC-looking tube as their core. Anyone care to comment on how to best accomplish this?
I'm also interested in making the inner surface as slippery as possible, to act as a bearing against the axle. Does anyone have experience either a) machining Nylatron or similar material (something filled with molybdenum disulphide), or b) buying Moly powder and adding it to a urethane casting?
With your eyes open, there are wonders to behold, keep them closed and all you will do is bump into walls. - Al Skierkiewicz [more] 
24-05-2011, 11:15
Threaded Mode