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PostPosted: Wed Jun 20, 2012 2:57 pm 
Newbie

Joined: Wed Jun 20, 2012 1:25 pm
Posts: 2
By the way (sorry for double post) The bike is a Shadow.

Here's my draft shopping list. Still not made my mind up whether to go ahead. Any comments welcome

Now
Chainwheel 52/40
Freewheel 14-28
Front Derailleur Suntour Cyclone
Rear Derailleur Sachs Huret

Gear ranges
Chainwheel 1: 38.6"-77"
Chainwheel 2: 50" - 100"
Capacity required 26T

Step 1
New wheel. 70c spring into frame
8 Speed cassette, 11-32
New chain
RD Hanger thingy
RD=Shimano Alivio (34T max, capacity 43T)
Maybe Shimano Deore

Capacity required=33T
Ranges
1:33.7" - 98"
2:44" - 127"

Those ranges are slightly bonkers at the high end.

Step 2

46/36 double from Spa
New BB from Spa - double so maybe existing spindle OK? Otherwise remove fixed cup from BB (yikes!) and replace with sealed unit
Hopefully no FD needed - existing cyclone will be OK?

Capacity required=31T

Ranges
1:30.4" - 88"
2:38" - 112"

Thoughts?


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