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0
votes
1answer
55 views

Need to know the wrench size for 10.9 screw

My pedal just unscrew. It has a hexagon-headed screw with '10.9' screw label. Anybody knows what size of wrench I need for this screw?
4
votes
1answer
1k views

Tightening torque: 5Nm, 40Nm… how do I tell?

I have wonderful new manuals everywhere, of brakes, wheels... In these manuals I see "tighten up to 5Nm", "tighten up to 40Nm". There must probably be tools with such measurements on them, but I ...
2
votes
1answer
301 views

Italian bottom bracket Shimano BB-6400 fixed cup tightening - what tool?

All, I have a Shimano 600 Italian-threaded bottom bracket (BB-6400) and after riding with it for a few weeks, the fixed cup is loosening. I've since read up about Italian BBs and learned that the ...
3
votes
4answers
4k views

My crank fell off, how do I re-attach it?

I was out riding on my mountain bike when my crank unexpectedly fell off (video). How do I reattach the crank? There's a torque range specified (25-30 Ft-Lbs): how critical is this? I don't own a ...
4
votes
2answers
1k views

Is torque relevant for steel/aluminium? Where do I find torque specs?

When you are not dealing with carbon, is torque relevant? I've never seen it mentioned on the hundreds of answers here, or the hundreds of how-tos I've read elsewhere. Should I just tighten ...
13
votes
7answers
2k views

Why would I need a torque wrench for a bicycle?

I was rather surprised to find a question about choosing a torque wrench on this site. I haven't cycled for years, but many years ago when I actually cycled I would do with a set of ordinary wrenches ...
4
votes
2answers
394 views

What should I look for in a torque wrench?

It has come to the point where I need a torque wrench for installing things on my bicycle. What should I look for when purchasing one?
6
votes
4answers
1k views

How to objectively evaluate torque wrenches?

My local bicycle group bought very nice but very expensive torque wrenches (if I can remember right they cost about €300–500). My local discount store markets them for about €50. My local auction site ...
7
votes
2answers
254 views

Tightening a nut too much

Often guidance will be given to tighten a nut to "20 lbs of pressure" or something along those lines. What's the best way to ensure you tighten things up, but not to over-tighten? Is there any way ...