2 to 3 speed

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ukoldschool

Senior Member
No offence to 12 boy, but it seems kind of pointless to me to have feedback from somebody that has a dual chainring setup, especially odd ones (58 and 38). All talk about gear inches is completely redundant when you aren't even using a chainring that 80% of people would use IMO.

Id like to hear experience from somebody that has changed from a normal 2 speed or 3/6 speed Sturmey hub to this, with a 'normal' Brompton chainring (44/50/54) :okay:
 

bikegang

Mod before ride, my bike my style...
The Unibody cog set can easily be the base of 4 speed mod (11-14-17T + 21T).
Need a longer 4 speed free hub body though.

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Gunk

Guru
Location
Oxford
A mint complete 2018 3 speed wheel just sold on Gumtree for only £80 this week including a new Schwalbe Marathon tyre, three speed shifter, cable and the chain tensioner. If you want to swap to 3 speed then a good used rear wheel is probably the way to go.
 
OP
OP
12boy

12boy

Guru
Location
Casper WY USA
I have a 3 speed 177% ratio SA wheel. Wotks very well. But thehub alone weighs a little over 1000 grams. The chaIn pusher solution is much lighter although the range is less. Guess it is whatever your tastes run to.
 

rogerzilla

Legendary Member
In t'olden days there was a simple 2-sprocket converter for a Sturmey threaded driver. The threaded driver isn't any good for an SRF3, which is a totally different design to the old AW, but AWs are two a penny and this might offer an easier solution.
 

Gunk

Guru
Location
Oxford
The Sturmey Archer 3 speed hub is a tried and tested piece of kit. reliable and needs very little maintenance, for a commuter bike it does the job very well once paired with a front chain wheel which makes the gearing comfortable.
 
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