Torque on Campagnolo levers (Carbon bars)

[Westbank]

Campagnolo is recommending 10 N/m of torque when mounting the levers on the handlebar. I'm installing these levers on a Ritchey Superlogic handle bar and just wanted to make sure 10 N/m is not too high for the handlebar. Ritchey doesn't indicate the max torque anywhere.

[em3]

Apply sufficient torque to hold levers on bars without exceeding the recommended torque spec (BTW, is that MAX torque or recommended torque spec'd by Camapagnolo?....two very different things). Specifically, start with about 5-6 Nm, if that holds your levers firmly, then u r done. EM3

[Westbank]

The 10N/m is recommended by Campagnolo.

[strobbekoen]

I usually torque them to 8

[Delorre]

Be carefull, after some years of use, my superlogic evocurve is seriously marked by the levers. And it's not the paint, but the carbon itself that looks like it's pressed in. I can't determine i the bars are shot, but I won't use them anymore. Levrs torqued down to 8 nm is a on the high side with light, thin-waled carbon bars.

[Pottsy]

Use carbon paste as well & go to a lower torque.

[borinomi]

carbon handlebar has enough stiffness to mount levers. it's OK

[graeme_f_k]

Be carefull, after some years of use, my superlogic evocurve is seriously marked by the levers. And it's not the paint, but the carbon itself that looks like it's pressed in. I can't determine i the bars are shot, but I won't use them anymore. Levrs torqued down to 8 nm is a on the high side with light, thin-waled carbon bars.

It's not talked about much but it's generally good policy to swap handlebars and stems our after 2 to 3 seasons anyway - the lighter the bar or stem, generally, the greater the risk - thinking in terms of when a bar or stem will fail and what the consequences might be - worth remembering that some degradation of resins used to bind carbon together takes place in UV, so it's a time-related thing as it's about exposure as well as about stress.

Had a customer come to us at Ride London with a set of name alloy 'bars in two halves, failed at the bar clamp, no sign or over-torque - 4 years old, his estimate 500 km / month on average ... it doesn't happen often and he was lucky (soft landing on the verge at Box Hill) but it's advice we give ...

[BrunoDMS]

For those using superlogic bars: I wrote to Ritchey Logic technical support. Max torque is 5Nm for superlogic bars