Q
~ Q ~
Guest
I got my bike back from some serious upgrading yesterday.
The Claud Butler 531 frame is now 30yrs old & originally had
126mm dropouts. It's been re-sprayed twice, had a new bottom
bracket shell, cantilever & rear carrier bosses brazed on &
now a 135mm XT rear hub - up from my irreplaceable 130mm screw-
on 7sp Sachs sprocket.
The old Ultegra 38/50 chainset has been replaced by a
splined 30/42/52 Ultegra with a 9sp 11-21 block & new
Ultegra front mech. The new rotary shifters seem to work
perfectly (the drops went long ago - not neck-friendly after
30yrs). The chainline is spot on (even if there's only a
0.8mm gap between inner & chainstay, the Q factor is the
same as the double was. When the Shimano chain wears out -
back to Sachs!
This little project cost me ~£360, including new rear wheel.
I hummed & ha'd over spending so much on such an old bike
due to potential compatibility issues but am pleased
everything works so well & was worth
it. Thank you Freewheel in Reading Had Scram continued
with the Sachs screw-on blocks, the damage would have
been for that, a new chain & rings - ouch! A triple &
close ratio block works rather nicely. Now for my
MTB; new wheels, new headset, new XT chainset/BB
combo, new...
--
The map is not the territory
The Claud Butler 531 frame is now 30yrs old & originally had
126mm dropouts. It's been re-sprayed twice, had a new bottom
bracket shell, cantilever & rear carrier bosses brazed on &
now a 135mm XT rear hub - up from my irreplaceable 130mm screw-
on 7sp Sachs sprocket.
The old Ultegra 38/50 chainset has been replaced by a
splined 30/42/52 Ultegra with a 9sp 11-21 block & new
Ultegra front mech. The new rotary shifters seem to work
perfectly (the drops went long ago - not neck-friendly after
30yrs). The chainline is spot on (even if there's only a
0.8mm gap between inner & chainstay, the Q factor is the
same as the double was. When the Shimano chain wears out -
back to Sachs!
This little project cost me ~£360, including new rear wheel.
I hummed & ha'd over spending so much on such an old bike
due to potential compatibility issues but am pleased
everything works so well & was worth
it. Thank you Freewheel in Reading Had Scram continued
with the Sachs screw-on blocks, the damage would have
been for that, a new chain & rings - ouch! A triple &
close ratio block works rather nicely. Now for my
MTB; new wheels, new headset, new XT chainset/BB
combo, new...
--
The map is not the territory