I'm in a bit of a fix.
It started when I decided to change the rear cassette on my Dynatech.
Had been looking for a nice light weight 7 speed with nice ratio's, and eventually found a lovely IG Shimano one.
I removed the old cassette and decided to service the rear hub - XT M732.
The bike rides nicely, but the rear wheel was making slight vibratory grinding noise - and as were the cranks BUT I didn't notice the cranks at first as I assumed it was the rear hub.
So I bought a new STX 7 speed freehub body, disassembled the rear hub, cleaned it all out, cleaned out the bearings and cups, put new grease, fitted the new freehub body (old one was shafted- rough as a Ninja, and knackered) I fitted the freehub body - nice n smooth - but there was still a slight vibration and grind - much smoother than before and not noticeable when cycling - but still there.
I checked again very carefully and saw that the bearing cups have been pitted, hence the noise. So my hub is knackered!
So a problem, what do I do?
I thought I'd buy a new identical hub, unlace my rear wheel, then lace the new hub onto the Mavic 231 CD rim.
Looking on retrobike I managed to source and buy a NOS XT M732 rear hub 135mm 32h.
a) Is it possible to do this? unlace a wheel then use the same rim with another hub?
b) Is this a wise thing to do?
It's obvious my hub is knackered and I may as well change it.
The only other alternative would be a complete new wheel - but I'd have to replace BOTH wheels and costs would sky rocket (as I have expensive tastes!
What should I do? Or have I the right idea?
The problems persisted - I noticed the cranks, when turning made a rough noise - SHIT I thought.
So took the cranks and rings off, and cleaned them, then turned the BB spindles - and to my disgust they turned with a noise like a grindstone - rough!
So I got hold of the Mavic BB tool, and undid the BB (a Mavic Fixie with 122.5mm (or thereabouts) spindle)
So now I need a new Bottom Bracket. I really like the Mavic, but a Royce, Phil or Shimano UN90/91 type would also do.
My Pace 48T/36T/Shimano 24T rings are ok, outer 48T seems a bit worn.
Crank arms are XT M730 170mm long, not bad, not perfect though - and herein lies my second Question;
a) keep the rings and cranks, and procure a new 122.5mm BB?
b) keep the cranks, and change the outer large Ring to a new or less worn one - (does my ring HAVE to be a 48T? or can I attach a 46 T if I find a decent one?)
c) just look for a new Crank set/Rings entirely and a BB to suit?
Again the 3rd option seems expensive. But I'm asking here as someone may be able to give me some rational and wise advice...