And one dealer in Portland Oregon..

3 speeds of BWR Hub are further apart than the BSR. Standard ratios
are like the venerable AW3
the 13/15 cog combination half steps the wide ratio hub.


I got a Schlumpf Swiss Mountain Drive crankset from CM Wasson in Palo Alto, Cal.
it adds 3 more ratios below those of the 3 speed AW3/BSR

about .. 18 - 80 GI in 6 ratios ..

Another option Mr Wasson got made up is a front derailleur mount
that clamps on to the frame , then a Braze on FD
bolts onto that , so You can Use a Double chainring set
and shift it with an additional thumb shifter.
[A 44/36 double makes an interesting double crank..with the 6 speed.]

I got one of those, then decided the MD crank was better for My use..
.. functions like a 54/21t crankset ..
I have yet to return it, so anyone interested I can ship it to either
as well ..
to dual range the rear gear ratios.

P bar is an Up/down choice like a drop Bar offers,
to tuck into the wind, but still folds the same ..

S bar is lower than the M bar , either of those will take an Ergon grip.

I like the extended seat post , at 5'9+" the standard post
gets pulled almost all the way up, and it is a little thicker wall tubing than
the standard post..

another option thru Calhoun's is a telescopic post with a different bushing,
so a 27.2 seat post with an integrated saddle clip can be used..

Not Sure what the upper of the OEM Brompton tele post is , anyone measure?