[dfukuba]

This is something my team has been thinking about for a while now. (Team #8) we have always used #35 chain on the drive train in the past, it has been strong and never let us down. But i do think it might be a little overkill. I would like us to use #25 chain because it seems to be more fitting, even though we are not sure if it will stand up.
My suggestion is to try both. I'm not sure how easily you can adapt things to your system, but it you have the opportunity to try both, i would go with that. Put both systems up to some stress tests, you can even do some math to calculate your forces. You never really know how something is going to work until you try it. remember that each application is different, so if 25 works for someone else on their drive train, it doesn't mean it will work for you.

--Dan