[CR] Campy Gran Sport RD issues

(Example: Framebuilding:Tubing)

Date: Mon, 9 Nov 2009 10:21:34 -0800
From: "sean flores" <seaneee175@gmail.com>
To: <classicrendezvous@bikelist.org>
Subject: [CR] Campy Gran Sport RD issues


I'm running a 1x5 setup on my FH Grubb. Front spindle is baylis "23" which measures just over 123mm which Sutherlands specs for 5sp. Stronglight Steel cranks with alloy TA chainring. FW is an Atom.

Problem is that gears 2-5 work just dandy, but when I'm in the small large combo, the chain skips out. I tried messing with my limit to get the derailleur over a bit. No dice.

Chain is a new SRAM PC-9 with tons of flex, so no cross chaining is involved. Could it be that I need a longer spindle? Does BB flex play a factor? What about the toothless jockey wheels?

Anyone have a similar problem or suggestions on how to fix?

Sean Flores
San Francisco, CA