Greetings ... scary issue with SRAM Force
07-25-14, 06:47 PM
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Greetings ... scary issue with SRAM Force
I'm an Ohio road biker. Been riding on SRAM for the past year-- current setup with Force front derailer/crank and Rival in the back and shiftters.
I've lately been having a horrible trouble when I'm climbing in little ring up front -- already in a gear and not shifting, just turning the crank with a steady torque. The chain gets hung up on the front ring and rides up between the ring and chain stay--and doing damage to the carbon!!!!
What's wrong? I haven't had this trouble until I replaced my cassette and chain about a month ago.
Thoughts anyone?
I've lately been having a horrible trouble when I'm climbing in little ring up front -- already in a gear and not shifting, just turning the crank with a steady torque. The chain gets hung up on the front ring and rides up between the ring and chain stay--and doing damage to the carbon!!!!
What's wrong? I haven't had this trouble until I replaced my cassette and chain about a month ago.
Thoughts anyone?
07-25-14, 07:09 PM
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Moved from Introductions to Mechanics.
07-25-14, 07:10 PM
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Welcome to BF! Try your SRAM problems in the Bicycle Mechanics forum. I think you’ll get more and better responses there than here.
On a personal note... I bought a bike with SRAM stuff on it a couple years ago and it’s been nothing but a PITA since day #1 . This will be my first, last and only SRAM equipped bike. I’ve had it two years, put more shop time and $$ into it than I’ve put into 35 years worth of Shimano-equipped bikes before it and it still hasn’t stopped giving me grief---and---I haven’t even put 500 miles on it! Never again!
On a personal note... I bought a bike with SRAM stuff on it a couple years ago and it’s been nothing but a PITA since day #1 . This will be my first, last and only SRAM equipped bike. I’ve had it two years, put more shop time and $$ into it than I’ve put into 35 years worth of Shimano-equipped bikes before it and it still hasn’t stopped giving me grief---and---I haven’t even put 500 miles on it! Never again!
07-25-14, 07:45 PM
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It's called "chain suck".
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07-26-14, 07:13 AM
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Probably need to replace your chain ring. If you Google "chain suck" you will find all kinds of info.
The new chain matched with the worn chain ring binds under load and won't release from the teeth. Check the chain ring for a bent tooth or burrs but probably just wear. You may have let your chain get too worn before changing which accelerates the wear on the chain ring.
The new chain matched with the worn chain ring binds under load and won't release from the teeth. Check the chain ring for a bent tooth or burrs but probably just wear. You may have let your chain get too worn before changing which accelerates the wear on the chain ring.
07-26-14, 07:46 AM
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Sounds like it could be classic chain suck, as the others above have said. Mild chain suck form a new chain on an older chainring often resolves on it's own as the chain wears the offending tips off the teeth. However, if you're not careful (have fast reflexes) it can get worse as the jamming can twist links or nick or bend teeth, either of which ensure it'll never resolve.
Before spending dough, consider that chain suck can also be a lubrication issue and a better chain lubricant can resolve/prevent it. I suspect this may be true in your case because many hew chains have a fairly sticky lube (which lubes great) which can cause the can to be less supple and act as yours does. The only thing pulling the chain off the bottom of the ring are gravity and the slight tension from the RD spring. A bit of stiffness in the pivots can have the chain be a slower to straighten and ride the ring up the back.
If you want to try a change before shelling out for a new ring email me using the link on the site below,and I'll send you a free sample to see if it helps.
Before spending dough, consider that chain suck can also be a lubrication issue and a better chain lubricant can resolve/prevent it. I suspect this may be true in your case because many hew chains have a fairly sticky lube (which lubes great) which can cause the can to be less supple and act as yours does. The only thing pulling the chain off the bottom of the ring are gravity and the slight tension from the RD spring. A bit of stiffness in the pivots can have the chain be a slower to straighten and ride the ring up the back.
If you want to try a change before shelling out for a new ring email me using the link on the site below,and I'll send you a free sample to see if it helps.
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FB
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
Last edited by FBinNY; 07-26-14 at 07:57 AM.
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