Box Three Prime 9 conversions

[pwebb]

derailleur hanger extension (for Box Three 11-50T) :






Microshift Acolyte with 12-42T comparison (no extender required):

 

[pwebb]

Box three 1x9 now fully working: observations - chain needs to be super tight to swing that big mech arm down, shifter cable tension also needs to be very tight - the action is definitely nowhere near as light as Microshift.

Overall this kit is more work than Microshift and not 'plug+play' on a vintage bike - requires a little ingenuity

looks the part though:

 

[MattiThundrrr]

chain needs to be super tight to swing that big mech arm down

It's a long way down, isn't it? How much ground clearance do you have when the arm is fully extended?

 

[pwebb]

It's a long way down, isn't it? How much ground clearance do you have when the arm is fully extended?

Not a lot, probably not great for plummeting down a rocky escarpment. On balance I think maybe the 11-46T variant of this kit is more practical perhaps in combination with a 36T or smaller chainring. Big balloon shape tyres help raise things a bit. The 50T dinner plate sprocket looks pretty mean though so I am happy withe the result.