Paradox tire clearance and chain dropping ?
I'm trying to figure out why my chain drops from my big ring to my small ring when hitting rough sections, rock gardens, etc.
I have the chain set up pretty tight. Derailleur limit screws are where they should be.
I have a 2.35" rear tire on my Paradox (it is so close to the chain)
All I can figure is as the chain is bouncing around, it is grabbed by the rotating tire and pulled off the big ring .
I've run a 2.3 Eskar and a 2.2 Purgatory, never have dropped a chain, no chain guide used.
What about the rear derailleur "B" screw?
Assuming this is a V1 frame if a 2.35" is close. Only legit thing I can think of is your lower limit screw on the FD needs tweaking a bit and/or your FD angle needs slightly adjusting. One trick you can use to help get a bit of clearance is to run 2 spacers on the drive side pushing the chainline out just a smidge - assuming you're running outboard bearings.
LyNx, Good idea. Yes, ver. 1 frame. I'll add another BB spacer and put a spacer behind the cassette too (removing 8th gear cog) Pretty sure this is the solution cause I often hear the chain hitting my sidewall. We'll see.
Originally Posted by LyNx
Thanks everyone for the suggestions.
I never had much of an issue I think because I have been running a Hope Pro2 SS/Trials hub and 6/7 cogs on it for the last 4 years, so my granny cog is actually about either in the position the 3rd or 4th biggest cog would be, which is a major help in keeping the chain away from the tyre, although it still was pretty close if mud got involved.
Originally Posted by client_9