New answers tagged derailleur
2
Touring → fenders. So, you need enough space for the rear fender. That's why a bottom-pull design is preferred.
Most of the touring bikes designed to use this type of derailleurs.
About high clamp/low clamp/braze on — this is frame-specific.
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Despite the the spindle length is 113, but as you observed, the offset is different - so the cranks are sitting in different positions. Not all Shimano BB are made symmetrical - and UN55 BC 1.37 x 24 113mm. means its a 1.37*24tpi thread, with a 113mm shaft - not mention on the offset of the shaft. Based on all this, evidence is that you have an imcompatable ...
1
If you have a triple front chainring, then you will probably need to change the front derailleur. But looking at the Giant specs, it shows a double, so you might be able to get away with relying on the end stops (and worst case using two clicks on a shifter designed for three rings).
http://sheldonbrown.com/upgrade-gears.html#frontderailers
"Although rear ...
2
Don't know if it helps,... but I use Sora shifters for Alivio rear derailleur (switched bars from straight to drops).
So I would think they are compatible.
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I doubt it exist over the shelf. It's already hard to find one that's made of plastic. If you really are set on going metal I'd suggest keeping a single chain ring and focus your gearing in the rear (hub, cassette, or hub+cassette combo). Building a custom chain guard will be costly, a pain, and not guaranteed to be a success. If you really want to have ...
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