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Old 09-09-08, 06:07 PM   #1
PainkillerSPE
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Ghost Shifting

I have a problem with ghost shifting on my front chain rings. I recently broke my old chain and decided to put a new Sram chain on. Everything works fine except for when I have the chain in the middle ring. It keeps jumping off to the lower ring or all the way off very violently when I apply pressure to it such as when i am climbing or putting the hammer down. Again it will not do this in the other chain rings, and it is not rubbing against the front derailer. It sounds like I might have a problem with the middle ring, but I can not see anything wrong with it visually. Any suggestions?
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Old 09-09-08, 06:53 PM   #2
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Ghost....hmmmmmm. Call TAPS.
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Old 09-09-08, 07:02 PM   #3
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You most likely need a new chain ring. How old was the chain you took off?
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Old 09-09-08, 07:29 PM   #4
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What's the front derailer doing. Is it staying in place (positioned over the middle chain ring, shifter in the middle position) or is it moving toward the lower gear? I had a similiar problem with a Grip Shifter that would not hold a shift position.
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Old 09-09-08, 07:41 PM   #5
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Quote:
Originally Posted by rankin116 View Post
You most likely need a new chain ring. How old was the chain you took off?
The chain I replaced had about 650 miles on it. The derailer is staying straight, so it sounds as if I need to replace my middle chain ring. Might just go ahead and buy a whole new crank set and BB while I am at it.
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Old 09-10-08, 08:02 AM   #6
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Be sure to check your cassette too. When I replaced my chain I ended up needing new chainrings, and cassette. Look into getting a chainwear checking tool. Only a couple bucks and usually pretty easy and quick to use.
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Old 09-10-08, 08:26 AM   #7
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WHO YA GONNA CALL?
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Old 09-10-08, 08:56 PM   #8
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Check your derailuer hanger. It could have a tiny crack that causes ghost shifting. I have completely replaced the drive train before, only to find out I had a hairline crack!!!!!!!
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Old 09-10-08, 08:58 PM   #9
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BFG beat me to it.
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