heli coil chainring to cranks?

[mikesnow]

Hi guys,
have a set of truvativ's that have 3 of 4 of the chainring threadings stripped. There were only two stripped but I was freaking out and went for a ride and stripped another and bent the ring. impatient i know. Question is, is this crank toast or will 3 heli coils hold the chainring 22t on securely?
thanks for any advice.

Mike

[rtorrenga]

You should be able to helicoil if you can find the correct thread and a helicoil that won't require you to drill out too much of the crank material (especially since you will be landing on the bashring (high stress area)).

[AgrAde]

aren't the rings usually attached with a nut/bolt type thing, and no thread is actually in the crank?

[Giant1118]

thats what i thought, just buy new ones.

[tomacropod]

not the granny ring - the crank is tapped directly. I think truvativ should depart from the crank business if they continue to use the same grade of alloy. Seriously it's fucking pathetic the way those cranks can't hold threads.

- Joel

[mikesnow]

yeah i agree, i have now stripped 2 driveside and 1 non drive side truvativ hozefeller/hussefelt cranks in like 2 weeks. Thanks for the help guys. Appreciate the answers, just ordered yet another set of hoze's off ebay for like 80 bux canadian, didn't really want to get bonz due to cost only, but will be doing so asap.