Quote:
Originally Posted by lnex1357
Tom,
We puchased the polycarb tube from McMaster. The wall thickness is .080" for the 1 x 1 (3161T31) we used, if you purchase 3/4 x 3/4 you can get 1/16" wall. We searched a number of places trying to find 2 x 1 but couldnt seem to locate anything other than 2 x 1 PVC. I would be overjoyed if there was a supplier for 2 x 1.
We never hammered on it, but it has been run into many times, and simply flexed and sustained scratches. The way we looked at it, is for the weight savings we would rather have one flex and/or break rather than have an aluminum one bend and bend other pieces of the intake with it. Its hard to see from the picture but we also have 1/4" poly carb plates as pivot point for our intake. These plates are nested inside the rather "beefy" pivot blocks. The end result is that the 1/4" poly plate combined with the 1 x 1 poly tube allows our intake to mantaine sufficent rigidity while collecting and traveling but flexs on impact with the wall or other other robots.
|
Thanks Josh. I plan on looking into that for DCMP. All these are simple replacements that can be made prior to the event and replaced quickly on the fly. The tubing across the top might be the solution for what I've found to be the biggest problem: shock loading up the gears when running into wall/1pt goal/robots. Being on the omni wheels, haven't see much need for the side-side sway, but I'm also looking at a lexan attachment point...either 1/4" lexan or starting with 2x1 aluminum tubing and sandwiching it with 1/16" lexan (sort of like what 67 does this year).