[BJC]

Team 33 uses #25 chain almost exclusively on our robots. It is strong enough for pretty much any FRC application. Like many have said sprocket alignment is very important. Also, in our experience the chain doesn't actually stretch - the slackening is from the sprockets wearing in. Generally if you have a way to tention the chain about a half inch (such as a sliding bearing block) that is enough to take care of any chain stretching. Alternatively, we actually ran with loose chain in 2012 (chain was not pulled tight by a tentioner) and never threw a chain. I think a lot of the problems people have is because of misalignment: if you have confidence that you can align the sprockets well then I would give it a try.

Regards, Bryan