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Torque Wrench and Carbon Bikes...
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 2008-08-09 11:32 AM |
 Subject: Torque Wrench and Carbon Bikes...I have a question for everyone out there that uses torque wrenches on carbom bikes. I just ordered my QR Seduza and should be getting here in a few days (wohoooo) but when I called trisports.com they recomended me use a torque wrench to put the seatpost and stem back together so I don't crack the frame if I over tighten it. I have been looking for one, since I dont want to lose a brand new frame, and saw one on the sears website for 30 dollars everything else seems so expensive ($70 +). My questions are: Does anyone uses a torque wrench, and to what setting/pressure for the stem, seatpost, water bottle cages, etc? Is it really necessary or do we have some really courageous people out there that doesn't use it? Thanks, Tom |
| 2008-08-09 2:00 PM in reply to: #1592053 |
Master  2202   St. Louis | Subject: RE: Torque Wrench and Carbon Bikes... Yes... its very necessary. You may have to look around to find a Tq Wrench that will work on a bike. A LOT of wrenches are not accurate at low torque settings and you will need something that goes down to around 3-4NM. I believe sears makes a "micro-torque" wrench that works pretty well. I also think Park tools makes one, if not them.. someone else definitely makes one designed for bikes with all the lower settings. Problem is, some wrenchs only work at low settings, and then you would need another one for the higher torque settings, like your cranks...etc. Its not really something to skimp on, because overtorqueing some bolts could lead to cracked bike parts. |
| 2008-08-09 2:59 PM in reply to: #1592053 |
Master 2946  Centennial, CO | Subject: RE: Torque Wrench and Carbon Bikes... Get one!!! Do a search on Torque Wrenches and you will find some other posts regarding them. My wife bought me one for Father's Day. I thought, "Perfect Gift" a tool and a bike tool for father's day what more could I ask for. I agree, they are expensive. But you probably will not use it that often unless you work on your bike a lot.  |
| 2008-08-09 5:20 PM in reply to: #1592173 |
Cycling Guru 15134 Fulton, MD | Subject: RE: Torque Wrench and Carbon Bikes... I don't use one on my bikes. Sue me ........ |
| 2008-08-09 5:27 PM in reply to: #1592053 |
Resident Curmudgeon 25290 The Road Back Gold member | Subject: RE: Torque Wrench and Carbon Bikes... I checked recently when I got carbon bars, and a fork with a carbon steerer tube, but neither of my LBSs routinely use torque wrenches. But I'm sure the mechanics there have a better feel for what they're doing than I do... |
| 2008-08-10 1:57 PM in reply to: #1592305 |
Pro 6767 the Alabama part of Pennsylvania | Subject: RE: Torque Wrench and Carbon Bikes... the bear - 2008-08-09 6:27 PM I checked recently when I got carbon bars, and a fork with a carbon steerer tube, but neither of my LBSs routinely use torque wrenches. But I'm sure the mechanics there have a better feel for what they're doing than I do... x2. When I got my carbon fiber bike this spring, the shop guy said they don't use torque wrenches. He told me that when I adjust the seat for height, I should feel how tight the bolts are supposed to be, and use that as my guide. Of couorse, being the gearboy that I am, I plan to get a set soon for when I do my overhauls. |
| 2008-08-10 3:25 PM in reply to: #1592053 |
Master 1222 Lafayette, IN | Subject: RE: Torque Wrench and Carbon Bikes... I built a Specialized Tarmac up last winter and bought an inch-pound torque wrench from Sears when they had it on sale. It was well worth it knowing that cassettes, bottom brackets, brake calpers, deraileurs, etc. were properly torqued. I used it wherever I could. I don't have to use it anymore for the seat post since I torqued it once and learned the "feel" for the proper torque, but I am an old automotive guy and proper torque can mean parts won't loosen up on you and/or squeak because you under or over tightened a bolt. Just my .02 cents. |
| 2008-08-10 3:44 PM in reply to: #1592053 |
Veteran 180 Hawkins | Subject: RE: Torque Wrench and Carbon Bikes... The mech and owner of my LBS both swear by torque wrenches. They've seen too many "accidents" by not using one. Now that I've said that, I need to buy one....  |
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