Do I really need a torque wrench for cranks and BB?

Uncle Just
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Re: Do I really need a torque wrench for cranks and BB?

Postby Uncle Just » Sun Jan 13, 2013 11:09 am

I agree with il padrone in that after many years of wrenching I've never had the need to buy a torque wrench for my mostly steel bikes. Having said that, when my son bought a carbon race bike, I purchased a small Ritchey 4mm torque key for bars, stem & seatpost. For modern bikes esp carbon it seems a torque wrench is now almost mandatory to avoid crushing the carbon. My take on bolts and screws on a bike is that you don't, as someone posted, go silly tight. You soon learn what is an appropriate amount of force to use when tightening things. Pedals for instance require ime just a bit more than gentle pressure to do up. Having clean threads with a little grease applied means they will come off easily which is esp useful when travelling. I've never had one loosen while riding with this method.

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RonK
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Re: Do I really need a torque wrench for cranks and BB?

Postby RonK » Sun Jan 13, 2013 3:22 pm

Uncle Just wrote:I agree with il padrone in that after many years of wrenching I've never had the need to buy a torque wrench

Me either. In my first career I worked for 15 years in the motor trade. My feel for bolt torque developed to the point where I could torque bearing caps and cylinder head bolts on my speedway machines when an emergency trackside rebuild was required and I didn't have a torque wrench handy.
I still don't use a torque wrench even for my carbon bikes.
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sturmey archer
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Re: Do I really need a torque wrench for cranks and BB?

Postby sturmey archer » Wed Jan 16, 2013 9:16 pm

I suspect that most regular posters in this forum spent their formulative years stripping threads and snapping bolts as I did. That gives you great practical training in what feels right. If you come to maintaining your bike without that background of destruction maybe a torque wrench is a valuable investment - just make sure you know the difference between ft-lbs and Kg-m !
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silentbutdeadly
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Re: Do I really need a torque wrench for cranks and BB?

Postby silentbutdeadly » Thu Jan 17, 2013 10:21 am

You don't really need torque wrenches but I use both of mine (a small 1/4" 2-20Nm and a big 1/2" 20-200Nm) quite frequently. Tools are like bikes. N+1 everytime. I'm mystified by anyone who might think otherwise :D
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hannos
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Re: Do I really need a torque wrench for cranks and BB?

Postby hannos » Thu Jan 17, 2013 10:38 am

If you think you need a torque wrench, get one.
If you don't think you need it, buy one after the first time you strip / break something :)
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RonK
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Re: Do I really need a torque wrench for cranks and BB?

Postby RonK » Thu Jan 17, 2013 6:25 pm

hannos wrote:If you think you need a torque wrench, get one.
If you don't think you need it, buy one after the first time you strip / break something :)

Actually, if you need to ask, then you need to use.
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Uncle Just
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Re: Do I really need a torque wrench for cranks and BB?

Postby Uncle Just » Thu Jan 17, 2013 6:27 pm

I suspect that most regular posters in this forum spent their formulative years stripping threads and snapping bolts as I did


Only bl**dy cotter pins as a 13 year old! :lol:

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il padrone
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Re: Do I really need a torque wrench for cranks and BB?

Postby il padrone » Thu Jan 17, 2013 6:41 pm

Uncle Just wrote:
I suspect that most regular posters in this forum spent their formulative years stripping threads and snapping bolts as I did


Only bl**dy cotter pins as a 13 year old! :lol:

+1 *

Oh, I once cross-threaded a pedal spindle. Just bought a thread tap to clean that out and I was right :wink:



* Usually it was the mash hammer job to get them out that really killed them :o
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