Crankset Fixing Bolt Torque

[Splash]

sehttp://www.campagnolo.com/repository/documenti/en/ULTRA_TORQUE_CRANKSET_UK_06_2012.pdf

the above link shows the torque for this crankset fixing bolt at 42 / 60 Nm.

a "divide" sign is used between 42 and 60 Nm.

i don't understand logic for this.

all i need is a single torque value and hope you assist here.

thanks

splash

[Admiral Ackbar]

certainly curious they use division signs, never seen that before

but i would imagine those are the min and max torque specs

hopefully someone with a more concrete answer will chime in

[Peter B]

Its a min/max range. Same as a min-max range (42-60 Nm). :)

If you need a single value use 51 Nm.

[Splash]

thanks peter.

[ultraman6970]

Are you talking about the central bolt? 60nm is a lot of torque man.

If yo are afraid of getting the bolt lose, just put some teflon tape in there and just crank it by hand. Done. Even there is a big chance that doing it by feel is a lot less torque than the 60 campagnolo is saying, the other thing is that the bolt wont go nowhere, if you over tight. Never heard of anybody stripping those threads ever aswell.

[rice rocket]

C'mon ultraman, you're not THAT weak... ;)

60 Nm is 44 ft-lbs, does that make it sound better?

Properly torquing is about bolt stretch and bearing preload, not just "fixing in place". Torque to the mfg specs, please. And don't let ultraman assemble engines ever. ;)

[CiclistiCliff]

Campy techs highly recommend closer to 60

[tigoat]

It wouldn't hurt to apply some anti-seize grease to the bolt.

[oldpotatoe]

sehttp://www.campagnolo.com/repository/documenti/en/ULTRA_TORQUE_CRANKSET_UK_06_2012.pdf

the above link shows the torque for this crankset fixing bolt at 42 / 60 Nm.

a "divide" sign is used between 42 and 60 Nm.

i don't understand logic for this.

all i need is a single torque value and hope you assist here.

thanks

splash

Min/max torque in NM...shoot for 50/55..grease or antisieze surfaces of the bolt and splines/hirth fitting

[ultraman6970]

To be sincere w/u i'm :)

C'mon ultraman, you're not THAT weak... ;)

60 Nm is 44 ft-lbs, does that make it sound better?

Properly torquing is about bolt stretch and bearing preload, not just "fixing in place". Torque to the mfg specs, please. And don't let ultraman assemble engines ever. ;)