I FLY Posted July 29, 2008 Share Hands. A certain ,careful middle age lady rider is desperately looking for a bike mechanic who can exorcise the ghost shifting from her bike's gears. Almost weekly visits to practicioners of the dark art of wrenching have not had the desired effect. The last three visits have resulted in the cranks coming loose during races and a tyre that would not hold air. The ghost shifting has not been solved. Any useful suggestions would be appreciated I FLY2008-07-29 12:44:57 Link to comment Share on other sites More sharing options...
singletrackmind Posted July 29, 2008 Share go on a mechanics course Link to comment Share on other sites More sharing options...
NotSoBigBen Posted July 29, 2008 Share Does it happen to be a red and white Epic S-works? Link to comment Share on other sites More sharing options...
NotSoBigBen Posted July 29, 2008 Share OK so if it happens to be an Epic then I had problems on mine that the outer that goes under the BB was slightly to short and it caused some ghost shifting. Does that help? Link to comment Share on other sites More sharing options...
Racer X Posted July 29, 2008 Share Presumably all the cables have been replaced? Link to comment Share on other sites More sharing options...
I FLY Posted July 29, 2008 Share It is the red and white one 5 different LBS , cluster , chainrings and 4 sets of new cables at the last count. Link to comment Share on other sites More sharing options...
NotSoBigBen Posted July 29, 2008 Share Check that outer length under the BB, Took a while to find my problem with that. When the suspension moves to a certain point the cable actually pulls from the stops. Cause of the brain it's not possible to check unless the bike is ridden. Link to comment Share on other sites More sharing options...
cycleq Posted July 30, 2008 Share Why not contact Sean/Adrian at LePeleton (011 627 5080) and get it sorted. Sounds like cable routing or dropout alignment. You can't run that RD cable tightly under the BB - it needs a fair bit of slack. Also the RD cable and Brake hose run in such a way that they cross under the BB. cycleq2008-07-30 00:44:13 Link to comment Share on other sites More sharing options...
DawieO Posted July 30, 2008 Share Or Merlin/Marc/Aiden at Dunkeld cycles, 011 341 0627 Link to comment Share on other sites More sharing options...
wildog_a Posted July 30, 2008 Share some really helpful input from one of the respondents on the spinman website:Looking at the bottom of the bike the cable should have a two finger gapfrom the body of the frame to where the B.B. sits. The ghost shifting problem becomes amplified when Sram is the gruppo of choice because of the 1:1 ratio :-) Cranks coming loose could be numerous factors, I will use the Race Face Deus as an example, they use a crank bolt which is an 8 mm. and then the 10mm. which is the extractor bolt. These are lightweight and when taken on and off regularly, sadly lose their bite. We normally replace these by using copper slip on the 8 going into the crank shaft and blue loctite on the one going into the crank arm itself, a torque wrench is crucial here. Link to comment Share on other sites More sharing options...
NotSoBigBen Posted July 30, 2008 Share Looking at the bottom of the bike the cable should have a two finger gapfrom the body of the frame to where the B.B. sits. The ghost shifting problem becomes amplified when Sram is the gruppo of choice because of the 1:1 ratio :-) Pretty much the issue which I had and described, interesting that it is amplified with SRAM since that is what I have on my Epic Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now