Weekend Wrenching – Torque Wrench…A Must Have!

Bike Maintenance | 198 | January 18, 2009 at 11:34 am

Weekend Wrenching

Torque Wrench

A Must Have For Every Tool Box

A quality torque wrench is a must have for every tool box. So you aren’t going to do your own work on your mountain bike? You still need a quality torque wrench. 

Why is a torque wrench a must have?

Every bolt on your mountain bike has a specified torque setting. This torque setting insures that the bolts do not fall out of the frame through vibration, and it makes sure that you do not damage components by over tightening. In many cases (as in the pictures below), the torque settings are printed on your mountain bike frame or components. 

When it comes to aluminum mountain bike components, the torque setting is still important but not as critical. Over tightening can crack these components over time, so you should still tighten correctly. With the increasing popularity of carbon mountain bike components, torque settings have become much more crucial. Over tightening of carbon mountain bike components guarantees component failure. Carbon parts and pieces can not handle the same clamping force of aluminum. Carbon will crack (or slip of not tightened enough) much faster than their aluminum counterparts.

So you don’t do your own mountain bike maintenance? You still need a torque wrench to double check bolts after numerous rides. Also, when you want to make simple adjustments to stem height, handlebar angle and other simple tasks, you will need a torque wrench to make sure that you tighten the bolts correctly upon installation.

Torque Wrench Tips

In my tool box, you will find the Craftsman torque wrench that you see in these pictures. For most mountain bike maintenance, it is really too large. I wanted something that would also work for automotive needs, but you can get one of the smaller versions to make things easier during your mountain bike wrenching.

One of the biggest mistakes that most riders make when using a torque wrench is over tightening. Once you set a torque wrench to the desired torque setting, slowly tighten the bolt until you feel the torque wrench click. Once it clicks…LEAVE THAT BOLT ALONE! Many times, you will mentally feel like that couldn’t possibly be tight enough, so you go back and re-tighten that same bolt using the same torque setting. You have now over tightened that bolt and will run into issues later. The biggest thing to remember is to trust that torque wrench!

If your torque setting is not printed on the parts like you see below, consult your owners manual of the part the bolt is attached to for the correct torque setting. It is always a great idea to check all of your bolts periodically to insure that you will not have devastating mechanicals out on the trail.

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6 Comments

  1. David Hamilton says:

    It is a shame that the LBS don’t know what a torque wrench is!!!!
    I work on jet engines for Delta Air Lines and I know there is a reason for torque specifications.

  2. I’ve gotta get myself a torque wrench! Every time I see torque specs, I always think I should have one, but when I look at prices, it’s hard to pull the trigger on such a spendy little bugger.

    Jason Mitchells last blog post..Spring Skiing in January: Cornfest in American Fork Canyon

  3. I should have clicked through to see that the Craftsman one is only $40! Not bad compared to anything from Parks or Pedros, which will set you back several hundy.

  4. 198 says:

    Jason…the one I linked is actually a Craftsman knock off from what I can tell. It is what shows up when you search for Craftsman Torque Wrench in Amazon.

    I would assume it works perfectly fine though…they can get really expensive.

    How is the powder out there??

    -198

  5. Powder is non-existent right now. I was skiing spring corn snow on Saturday in the backcountry. Nice and creamy though. Hopefully we’ll get more snow in the next 10 days.

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