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Putting on a new front rotor (180mm on a Hope Pro2Evo) as the old one has a pronounced step on the edge of the brake track.
Anyone know what torque for the bolts? Was going 4Nm with blue thread lock.
Ta!
I thought 6nm but would need to check.
Edit : nope, 2-4nm you are correct.
Thanks, Google-fu is failing me.
I've always done mine to 5Nm. However, last week I did actually die in a ball of flames.
That’s good to know Onzadog, I won’t bother to check mine are 4nm not 6nm if that’s the worst that will happen.😀
I'm pretty sure the torque is usually specified on the rotor, not that I have ever personally used it.
1 small 'nngh' with a short allen key
The only time I ever used a torque wrench on rotor bolts was with a set of Hope ti ones (that another mechanic had snapped a head off previously, and was avoiding a repeat scenario) with the blue locking compound. A pointless task,it turned out, as the compound bound up the threads enough to trip the wrench before the bolt heads had even contacted the rotor.
IME 6Nm is no more than a twist of a t-handled driver with your fingers - so just a bit less than that - probably not even the ‘n’ in ‘nngh’ and definitely no ‘r’ 😂 TBH I’ve got 2 torque wrenches but never really bother. I’ve never stripped/snapped any nor had any come loose in 20 years. FWIW 7Nm is the max recommended torque for an M5 fastener - it’s got nothing to do with the disc
Full blast on the drill
Don’t forget to Thread lock, tighten until your knuckles click.
Full blast on the drill
Same but impact driver then an extra crank with the torq key
Dovebiker. Pretty much. Thinking about it, I actually use a torx screwdriver on my rotor bolts anyway!
I can get em off with a hnnn on a torx screwdriver (less likely to wreck the head as some of the hnnn goes into pressing down) so that’s the same force I apply in reverse. Not sure how much torque my skinny wrists could put through a screwdriver.
I've always used a 5nm torqkey, never used threadlock on mine and never had one come loose, been using hope titanium ones for years without issues, I do regular bolt checks and they're always tight.
Never used a torque wrench on rotor bolts, the thread compound on the bolts is more than enough to overcome the 2-4Nm that is recommended.
Never used either thread compound, or torque wrench. And never stripped/lost a bolt.
30 years later, no ball of flames.
oikeith
Full Member
Full blast on the drillSame but impact driver then an extra crank with the torq key
That's my method too, works a treat.
Turn till they start to strip then back off half a turn?
My Hope rotors say 5nm.