SRAM front mech issue.....bit of an odd one.....

softlad
softlad Posts: 3,513
edited December 2009 in Workshop
Strange one, this....

I've just fitted Force 10sp shifters and Rival mechs to my best bike (VN Chinook) - and everything seems properly set up and running nicely.

Out on the road, the rear works perfectly and the front mech shifts the chain up and down on the front with no problem. However, put the bike on the rollers and it is a different story.

On the rollers, the bike simply will NOT shift up onto the big ring - no matter how far or how hard you push the lever. It tries, but the big ring (a 50t) simply will not pick up the chain.

On the road = fine - on the rollers = not fine.

Is there any rational explanation for any of this - or is my garage haunted..??

Seriously though, I just don't get it and I'm wondering if I've missed something obvious...

Any suggestions welcome... :|

Comments

  • Pokerface
    Pokerface Posts: 7,960
    softlad wrote:
    Any suggestions welcome... :|

    You have to activate the "motion sensor" on the new Force mechs. They only will work if the bike is actually moving forward. 8)
  • salsarider79
    salsarider79 Posts: 828
    Surely the rollers will move both wheels? Turbo trainers only let the back wheel move.
    jedster wrote:
    Just off to contemplate my own mortality and inevitable descent into decrepedness.
    FCN 3 or 4 on road depending on clothing
    FCN 8 off road because I'm too old to go racing around.

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