The same reason you would use a torque wrench to assembly an engine is the same reason you use a torque wrench on a bicycle.herbn said:i just looked in on this thread because i was wondering what kind of complicated work you were doing that would require you to own a torque wrench. I'm generally under the assumption that i don't need a torque wrench ,well maybe for assembling a motor,connecting rods, headbolts,stuff like that. However recently i bought a giant carbon stem for my road bike and i just put it on and went riding ,on the second ride i hit a solid bump and the handlebars shifted with a loud creak/pop, i looked down and the torque specs are printed right on the stem, i revised my planned ride to spin by my local bike shop,i'm 30 year friends with the owner. I borrowed the torque wrench, set it on the recommended setting and started tightening,it didn't seem to want to click. I called over to the head mechanic(owners brother) to find out if the wrench actually works right. He came over and we backed off on the torque setting just a bit and it clicked, we decided to leave it at that. The point of this (hardly) little story is there are very few things in bicycling that actually require torque wrenches. I may have used one on rotor bolts when i first got disc brakes,12 years ago,havn't bothered since.I've never had a problem with improper torque on something that i remembered to tighten. If you tighten things sensably you'll probabely be ok,but if you have to own a torque wrench knock yourself out. If you need a shopping list of specialized bike tools that are more important than a torque wrench; deraileur hanger alignment tool,spoke tensionometer,freewheel lockring tool/chain whip,there are a couple others that depend on the type of headset and bottombracket that are on your bike.
Wow...herbn said:The point of this (hardly) little story is there are very few things in bicycling that actually require torque wrenches.
yes, craftsman has one that is around $70 that covers 20-250 in lbs.KleinAttitude said:hmmm is there a wrench that will do most of the range. Or will I have to buy two?
not accurate under about 70 inch/lbs.. as long as you use it over that, (20-100% of its range) its fine.92gli said:yes, craftsman has one that is around $70 that covers 20-250 in lbs.
This one is 150 foot-pounds (not inch-pounds). Way too high for anything on a bike.KleinAttitude said:Park tools TW-1 would do most of my needs. But its expensive for a beam wrench.
This bream wrench http://www.tooled-up.com/Product.asp?PID=15604
Is a 1/4 of the price of the TW-1 and works for 0-150lbs. But the gauge is not in nm.
How do you know ?One Pivot said:not accurate under about 70 inch/lbs.. as long as you use it over that, (20-100% of its range) its fine.
I cant find anything useful for small tolerances. I need a beam wrench that will do 0nm - 10nm of there abouts.Speedub.Nate said:This one is 150 foot-pounds (not inch-pounds). Way too high for anything on a bike.
I don't know why these lower range torque wrenches are so expensive. Maybe because they aren't as in demand as the higher ranges?
I just browsed the eBay UK site and it looks like slim pickings. But I'm sure there are a handful of US sellers who would be happy to ship internationally but don't advertise it.
At this point, probably. I hate the price of the TW1. The TW2 is sold here under the Craftsman label (Sears) for $20 -- half of Park's asking price. But at least you'll be getting what you want.KleinAttitude said:Are the Park Tool TW-1 and TW2 my best bet?
because thats what every torque wrench manufacturer lists for accuracy on clickers, 20-100% of the range. http://www.craftsman.com/shc/s/p_10...ipment&cName=Hand+Tools&keyword=torque+wrench92gli said:How do you know ?