davek said:So, how do I know when to stop tightening a bolt?
Say, for example, I was keen not to tighten a brake cable bolt to the
point where the thread strips and I need to buy a whole new set of
brake arms? (just a random example plucked from my imagination, you
understand...)
BTDT (for a derailleur.) If you have a bit of mechanical nous, you get
a tap for the next size up (if you stripped a hole) or a die the next
size down (if you stripped a stud) and recut the thread and use the
appropriate sized nut/bolt to rescue it. This is a lot cheaper than a
new component. Be aware that you have to judge whether this weakens the
component too much for safety (you are OK doing this to a derailleur
but a front brake could be a bit more exciting)
Quoted message said:I think my problem is a worry that bolts will come loose, with
catastrophic consequences, so I may have a tendency to over-compensate
when tightening. But how can I tell when a bolt is /tight enough/?
Does the cable come loose? If not, then it is probably tight enough
Quoted message said:I've
read enough past threads to have got the idea that a torque wrench is
an unnecessary expense, but is there some other way I can learn when to
stop tightening?
Itf the thread strips, it was too late ;-) But seriously, take it up
finger tight using an allen key/spanner (ie as tight as you can get it
using just one finger, not hand pressure on the tool. Then use your
whole hand to take it to comfortably tight, where the tool doesn't
leave a dent in your hand (probably between 1/4 to 1/2 a turn from
there depending on the bolt). Remember what that felt like. If it comes
loose then add a smidgin more next time.
Quoted message said:(In the mean time, can someone recommend some good, cheap V-brakes?)
Deore work for me. It might be a bit interesting tapping an M6 thread
into the brake arms as there won't be much material left, though you
might be able to use a small helicoil.
...d
