|   What parts require a torque wrench to install? | abox
Nov 6, 2002 6:58 PM | | Headset and BB are installed, now for the fun part. There's a lot of talk about torque and its respective wrench. What parts need specific torquing? |
| re: What parts require a torque wrench to install? | RED5
Nov 6, 2002 7:25 PM | | Nothing really, but it's a good idea. I use mine for stem and cranks only. Everything else I just go by feel. But most mfg. suggest torque setting for most parts that are attached with bolts. Here is Park Tools list ( http://www.parktool.com/repair_help/torque.shtml ) of items that may/should require a torque wrench. |
| None, but... | næstep
Nov 6, 2002 7:58 PM | | Require is too strong a word. All of us got by and/or get by without a torque wrench, but using one is still a good idea. I use mine on:
* Bottom bracket
* Crank bolts
* Suspension pivots
* Stem
* Rotor bolts
* Disc calipers
* Cassette Lockring
The first two are the only ones I'm religious about. The suspension pivots rank highly, but regularly checking for tightness (without the torque wrench) is better than nothing at all. The others I use the torque wrench because I have it.
næstep |
| Cassette Lockring .......how tight without torque wrench? | Chester
Nov 7, 2002 12:45 AM | | Just curious, but if you don't have a torque wrench, about how tight do you make a Cassette Lockring?
How far past the initial feeling of the chink, chink, chink feeling or what ever you call that?
And what happens if you tighten it too much or too little?
Perhaps the best way to describe it might be.....How difficult it it to loosen if you have tightened it up to the correct tightness?
Any adivce for a person not too skilled in this area?
Thanks..... |
| Cassette Lockring .......how tight without torque wrench? | Philber
Nov 7, 2002 5:06 AM | | You don't really need to worry about it if it's tight, because it's one of those parts that gets tighter with use. I have a torque wrench, but I don't use it for cassette lockrings, because once it's been tightened, I've never had one come loose. |
| Agreed ... doesn't need to be that tight | GlowBoy
Nov 7, 2002 12:13 PM | | Hell, I don't even use a wrench to tighten down a lockring. I just get it as good and tight using my gloved hand (enough to generate at least a few clicks against the ridged outer cog when I have one, but that's it). Never had a problem, and it may or will tighten with use anyway.
I've been doing a lot of experimentation with various singlespeed and custom-cassette setups the last year, so for me it's nice to be able to quickly remove the lockring without using a chain whip. I have yet to see a compelling reason to tighten the lockring "to spec".
- Dan |
| crank bolts? | third day
Nov 7, 2002 11:03 AM | | Is it really important with crank bolts? What damage could be done by overtorquing cranks? (other than the obvious - stripping threads or breaking bolts) My crappy Deore cranks keep making noise so I just tighten them as hard as I can. I can understand smaller bolts or delicate things like disc brakes, but crank bolts are some of the biggest things on the whole bike. |
| With crank bolts... | næstep
Nov 7, 2002 12:33 PM | | ...the problem is undertightening. An undertightened square taper crank will eventually develop play and the interface will "round out" past the point where no amount of torque will keep them tight. With splined cranks, they'll just work loose and make noise. Loose cranks is an everpresent topic on the drivetrain board.
næstep |
| Overtightening is also a problem ... | Philber
Nov 7, 2002 3:41 PM | | ... especially with square taper BB's, because overtightening will force the cranks farther on the to the BB spindle than intended. This will reduce your chainline slightly but, more importantly, will enlarge the hole in the crank arms so that they can never be torqued to spec after. |
| Is that a fact? | third day
Nov 8, 2002 10:18 AM | | I didn't know that. I have probably been overtightening mine. Contributing to the problem. Incidentally, I have had problems with EVERY square-taper crankset I have ever used, going back 15 years to my BMX days. I guess the only real solution is splined cranks.
I love this forum. I learn something new every time I come here.
My favorite cranks - Redline Flight |
| Thanks | abox
Nov 6, 2002 8:32 PM | | Good info. Thanks gents. On to question 2... |
| I'd use one for any carbon part | Locoman
Nov 7, 2002 5:55 AM | | Otherwise you're taking risks. |
| Agree with locoman...use with carbon parts....nm | WarrGuru
Nov 7, 2002 7:39 AM | | |
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