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Just bought a torque wrench

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Just bought a torque wrench

Old 06-10-14, 07:29 PM
  #1  
dleccord
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Just bought a torque wrench

It's the 1/4" drive beam versions from Park Tools. Now that I have my stem and seatpost properly torqued, what else should I check for proper torque specs?
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Old 06-10-14, 07:38 PM
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Anything in your area that has a spec stamped on it. This could provide hours of fun.
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Old 06-10-14, 07:53 PM
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The temple screws on your sunglasses is a good place to start
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Old 06-10-14, 08:15 PM
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Resist the urge to tighten everything to a torque spec.

Vast majority of stuff on a bike needs to be tightened enough to not come loose, and no more.

The only times I've broken bolts is tightening them past where they were tight to hit a torque spec.

the torque wrench can be a helpful tool and help you develop some feel, but don't get carried away.

its not rocket surgery.
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Old 06-10-14, 08:21 PM
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Originally Posted by merlinextraligh View Post
Resist the urge to tighten everything to a torque spec.

Vast majority of stuff on a bike needs to be tightened enough to not come loose, and no more.

The only times I've broken bolts is tightening them past where they were tight to hit a torque spec.

the torque wrench can be a helpful tool and help you develop some feel, but don't get carried away.

its not rocket surgery.
Important points! I just recently destroyed the Shimano FH-7801 freehub on a wheelset I own by torquing the cassette to the lower range of the torque specification.
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Old 06-10-14, 08:56 PM
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torque wrench is as over rated as a pro fit.
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Old 06-10-14, 08:59 PM
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Originally Posted by Jed19 View Post
Important points! I just recently destroyed the Shimano FH-7801 freehub on a wheelset I own by torquing the cassette to the lower range of the torque specification.
You should try filing a claim for that... If your wrench is reasonably in spec something may have been defective with the freehub...
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Old 06-10-14, 09:12 PM
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Originally Posted by merlinextraligh View Post
Resist the urge to tighten everything to a torque spec.

--
its not rocket surgery.

I wish I was a rocket surgeon....
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Old 06-10-14, 09:17 PM
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Crankarms and bb. Far too many a crank creak from undertorque...
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Old 06-10-14, 09:37 PM
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a conversion table from nM to Ft/lb and nM an in/lb
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Old 06-10-14, 09:40 PM
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Originally Posted by merlinextraligh View Post
Resist the urge to tighten everything to a torque spec.

Vast majority of stuff on a bike needs to be tightened enough to not come loose, and no more.

The only times I've broken bolts is tightening them past where they were tight to hit a torque spec.

the torque wrench can be a helpful tool and help you develop some feel, but don't get carried away.

its not rocket surgery.
+1

The urge to check things needlessly like this is a well documented form of "tinkeritis", with equally well documented cases of causing more problems than it fixes. In other words "if it ain't broke don't fix it".
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Old 06-10-14, 09:42 PM
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Most likely operator error.
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Old 06-10-14, 11:22 PM
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Originally Posted by UnfilteredDregs View Post
You should try filing a claim for that... If your wrench is reasonably in spec something may have been defective with the freehub...
I probably should. I have owned the wheelset for many years (much longer than three years, which is the standard Shimano warranty length on Dura-Ace components). The torque wrench I used is a HarborFreight wrench, of which spec I am not so certain. I just might talk to Shimano to at least see what they say. I use the same wrench on other wheelsets, but because the freehubs are all either made of steel or titanium, no issues at all. The FH-7801's freehub is all aluminum.
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Old 06-11-14, 07:44 AM
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Originally Posted by mtbikerinpa View Post
Crankarms and bb. Far too many a crank creak from undertorque...
Agreed. Critical moving parts ought to be torqued to spec'.

Specifications exist for a reason.

Most important is tightening things as per the manufacturers instructions; many parts require that you tighten in a symetrical pattern if multiple bolts are involved, in order to ensure stress at the juncture/joint is evenly applied.

Having a quality, calibrated, wrench is important. My stem, bars, levers, crank arms, post, seat rails, are all torqued to spec'. No problems. The overall range of settings is 6-8nm.

I don't check things weekly, the crank arms maybe once since installation after about 200 miles... because the manufacturer recommended it. Then again, I read instructions.


I'm always checking for sounds & creaks... Especially since I have an all crabon cockpit... I don't need an asplosion.

Last edited by UnfilteredDregs; 06-11-14 at 07:56 AM.
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Old 06-11-14, 07:57 AM
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Originally Posted by coasting View Post
torque wrench is as over rated as a pro fit.
Ignorance is bliss.

There is no such thing as a vehicle where the parts don't eventually come loose due to operation. A key to safety is catching what's getting loose preferably not during operation of the vehicle.

Last edited by UnfilteredDregs; 06-11-14 at 10:36 AM.
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Old 06-11-14, 10:33 AM
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Originally Posted by UnfilteredDregs View Post
Specifications exist for a reason.
Bingo.
Originally Posted by coasting View Post
torque wrench is as over rated as a pro fit.
Have fun with that.
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Old 06-11-14, 12:28 PM
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Originally Posted by UnfilteredDregs View Post
You should try filing a claim for that... If your wrench is reasonably in spec something may have been defective with the freehub...
Well, talked to Shimano this morning, and they are not gonna cover under warranty. So, I am out of luck.
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Old 06-11-14, 12:49 PM
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Originally Posted by coasting View Post
torque wrench is as over rated as a pro fit.
I would tell you to lighten up, but I know how you struggle with that.
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Old 06-11-14, 12:54 PM
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Originally Posted by RollCNY View Post
I would tell you to lighten up, but I know how you struggle with that.
lol
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Old 06-11-14, 10:57 PM
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i have never used a torque wrench and yet here i am! Bike hasn't asploded from under me yet.
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Old 06-11-14, 11:55 PM
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Those two little L H screws on the derailleurs, 500 giga foot pounds (I think I converted that right from metric). LH stands for Like, really Hard.
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Old 06-12-14, 04:55 AM
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so all those torque specs are dry. if you are lubricating the threads, you require 25-30% less than specified.
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Old 06-12-14, 07:06 AM
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Originally Posted by coasting View Post
i have never used a torque wrench and yet here i am! Bike hasn't asploded from under me yet.
That's nowhere near the same thing as "torque wrenches are overrated."
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Old 06-12-14, 08:07 AM
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Originally Posted by GoRacers View Post
That's nowhere near the same thing as "torque wrenches are overrated."
Yet both statements are true.
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Old 06-12-14, 08:31 AM
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I cracked a carbon seat post by being too cheap to buy a torque wrench.
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