In article <[email hidden]>, Nick
[email hidden] says...
Quoted message said:Rob Morley said:In article <[email hidden]>, Nick
[email hidden] says...
Quoted message said:Yep broken spokes are to be expected.
Only with poorly built wheels, or those that have been subjected to
excessive stress.
Perhaps, but the rear wheel on this level of bike normally breaks spokes
for me.
Cheap machine-built wheels, so not brilliantlyly built - it's usually
easy enough to fettle them into a reasonable state when they're new,
although cheaper components do place a limit on durability.
Quoted message said:
Quoted message said:It says damage to the frame near the headset. The front end could have
been pushed back by a heavy impact and the bike could still roll
straight, in fact up to a point the extra trail will make it more stable
no-handed.
Surely If the bike is stable and turns ok no handed. It is probably ok
to ride.
But would you want to buy it if it was bent and possible falling apart?
Quoted message said:
Quoted message said:If you suspect frontal impact damage you need to check the
bottom of the downtube for bulging just behind the head tube, also that
the head tube is parallel with the seat tube and that the head tube,
seat tube and rear dropouts are straight relative to each other.
Ideally you want to take the forks out to check them for alignment too.
I have riden bikes where I have creased the downtube as you explain.
That's not a crease, it's a ripple - it doesn't necessarily indicate
that the frame has been seriously weakened, just that it's had a frontal
impact and its geometry is compromised.
Quoted message said:I
rode the bike for a year or so after doing this. I wouldn't chose to do
it but the main thing about alignment is surely that the bike rides ok.
Or is there another problem? I mean the steel frame won't fail
catastrophically will it?
A crease has a sharp edge that can act as a stress raiser, leading to
subsequent failure of the tube. It's not usually catastrophic, although
if you don't notice a crack it can propagate to the point that it fails
suddenly under high load - do you want to take the chance?
Quoted message said:
Quoted message said:Quoted message said:You should also check the gears index and don't skip.
Usually just a question of adjustment or lubrication. Wear can be
checked by looking at derailleur slop, sprocket hooking, chain stretch.
Gears also skip due to the rear derailleur/hanger being bashed which
normally means a new part.
True, except that steel hangers are pretty easy to realign.