pic: 2009 robot idea

[Alex Cormier]

Originally Posted by pacoliketaco

okay, so i have been further adding features, trying to figure out how to tension the chains. im not too comfortable with moving the wheels in sliding shafts, so i added a bar of sorts to tension the chain.

the lines represent the chain, and the circles represent sprockets and tensioners. the small circles, the ones that appear to be in the slots, are composed of two tubes, the outer being of HDPE, and the inner of polyethylene. the intent was that a bolt would run through these two tubes, and would be able to slide up and down the slot, in order to tension the chains.

Looks great, good job on the improvement. I do make one suggestion, I have experienced similar type of tension systems. I say instead of a stright shot for the tension to be calibrated, I would recommend them to be holes every 1/8" or so. This will greatly improve on the idler not slipping from having too much force applied to it, and you are always sure that it did not move during a match.

[pacoliketaco]

Originally Posted by Alex Cormier

Looks great, good job on the improvement. I do make one suggestion, I have experienced similar type of tension systems. I say instead of a stright shot for the tension to be calibrated, I would recommend them to be holes every 1/8" or so. This will greatly improve on the idler not slipping from having too much force applied to it, and you are always sure that it did not move during a match.

i guess in the rails in which the tensioners ride, i could just put a few holes/dimples that allow the screws to tighten further than usual.