Do you use a torque wrench to install a new BB?

[Cyclenon]

Hi,

I need to change my Hollotech II BB and I was wondering whether others use a torque wrench?
I use a torque wrench on things like seatpost clamps and a carbon frame but there tolerances are much lower.

Shimano recommends (http://si.shimano.com/php/download.php?file=pdf/um/SI-1LM0A-001-ENG.pdf) a fairly wide 35-50 Nm which make me think it's much more forgiving, i.e. not necessary to use a torque wrench.

Interested to hear what others use?

Thanks.

 

[Citius]

I've never used a torque wrench on a BB. Or any other bike part, for that matter...

 

[TissoT]

Nope... Just hand tight when fitting a hollowtech BB

 

[Pale Rider]

I've never used a torque wrench on a BB. Or any other bike part, for that matter...

Me neither, and I wouldn't buy one for a bottom bracket change.

But the OP already has a torque wrench so may as well use it.

 

[Cyclenon]

Thanks.
BB is probably overkill but I've seen carbon frames pop when over tightening seat clamps...

PS: my torque wrench is for small torques. I was debating whether to buy a bigger one but the consensus appears clear...

 

[Citius]

But the OP already has a torque wrench so may as well use it.

Depends on what BB tool fitting he is using. I wouldn't be going out and buying another BB tool just so I could fit it to my torque wrench.

 

[numbnuts]

Torque wrench on a bike never, tighten by feel

 

[PaulSecteur]

I use one... because I have a torque wrench and the tool to do it, though I always use it on a carbon bike I would do it by feel on aluminium.

That said, if I didn't have it I would still do carbon bikes by hand - just use a good tight nip up. No need to baboon it.

 

[Ticktockmy]

If you have the Torque wrench ratings and the wrench itself, why not use it, otherwise just tighten by hand then nip it up, as you get more experience you will know if you are using normal wrenches how much to tweak them up.

 

[Gravity Aided]

I mainly use a torque wrench on threadless headsets.

 

[Spoked Wheels]

I have a torque wrench so I use it. If I didn't have one I would probably do without.... but then again, I don't own a plastic bike