12sp cassette eh?
Don't tempt me.
Gear changing is a doddle.
Just use the derailleurs normally, but use the SA as an "amplifier" up or down
IF required. There's no need to go up through all the gear sequences, but it would be interesting nonetheless.
I know 90 gears is overkill, but ............. willing to be proved wrong here .............. in order to get higher gears
and lower gears on a small wheeled bike, it would cost more than the cost of SA 3sp hub.
If I bought a wider cassette and a smaller inner ring to get sub 20", and at the same time get a higher gear by going to a Moulton cassette with a 10t cog plus the specific hub (or the Capreo version) I would have spent much more.
Not costed it, but I reckon I'm right.
All I needed was a secondhand rim, a thumb-shifter, some old gear cable outers I had lying about, and the SA 3sp of course. I had all the rest of it already on the bike.
As a matter of interest - maybe? - I was able to fit the SA gear cable using a length of outer and ferrules to the original cable stop on the right where the STI cable would have been. I'm now using DT shifters of course.
From the cable stop, I ran bare cable down to the bottom of the seat tube area but there was no braze-on stop available, so I Araldited a ferrule next to the rear derailleur cable stop. This allowed me to run the outer from there to the SA clamp-on stop before the toggle chain.
Also, a brainwave.
The bike is separable, so I needed a cable splitter. They cost £15 each.
So I made my own Heath Robinson version by using "chocolate block" innards. A little bit of dressing with a file made the smaller ones fit inside the bigger one.
All I need is to use an Allen key to split.
Mick F. Cornwall
