apache wrote:
Hi Twitchers,
Other than Helicopter Tape, I am looking for some protection from chain suck (chain suck, not chain stay protection). Cervelo P2 frames don't come with any form of chainsuck protection film/plates. Does anybody have any solutions (to include DIY solutions)?
Thanks!
G
Chain suck refers to the chain not disengaginging the front ring and consequently jamming into the stay, itself, the front derailleur or a combination of all three.
Worn out chainrings usually cause this.
It may also be caused by some rare combinations of chains and rings.
It NEVER happens on a road bike, this is 90's MTB territory and is pretty much a non-existant phenonomen now.
Chain slap is where the bouncing chain hits your chain stay and leaves littlr marks.
Maid worse by some frame designs that run the chain very close and freehubs that drag a little so that the chain looses tension.
You can usually change the spring position of the rear derailleur to lesson this if need be.
Chain drop is where the chain falls off of the front ring during down changes of the front ring and sometimes gets caught inbetween the frame and crank.
Well setup drivetrains with good maintainance simply don't drop chains.
Bikes with out of spec short chainstays benefit from an anti drop device.
There are shitloads of these out there.
The type that mount to the front of your derailleur will fit any bike with a frame mount FD.
Shark fins work exceptionally well for bikes with round tubes.
Mixed drivetrains are the worst offenders followed by older SRAM FD designs.
Any full Shimano drivetrain should not be dropping chains, ever.
Check your front rings for wear and the positioning of the derailleur.
Cervelo's may need to run one of the FD spacers available from Cervelo or some aftermarket suppliers to get the correct position.
So which problem do you want a solution for?