Bicycle Mechanics - SA axle length/sizing question
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04-06-11, 08:34 AM
With the various choices of axle length for any sturmey archer hub is it just the axle, shell, nuts and toggle chain that differ, with all other internals being the same?
I think in some instances the shell is the same and the axle nuts and axle account for the OLD specification, but in other instances the shell is different.
I'm guessing there's always potential on the left side/non-drive side for changing proportions so it wouldn't make sense to have different driver/pinion etc specs. . . ?
04-06-11, 08:43 AM
AW3 in my Brompton is in a sub 120 dropout frame, fwiw,
don't have an other to compare, so cannot.
04-06-11, 09:44 AM
Looking at centre-to-right flange specs across different hub ranges there doesn't seem to be one single approach to flange position. On the S-RF3 no matter the axle width/OLD the flange position remains the same (relative to center), whereas on other hubs it seems the flanges remain constant relative to the drive-side locknut. But this is to do with shell design and nothing to do with internals, I assume.
04-06-11, 10:02 AM
Shell, spoke flanges and the cylinder in between, is a separate part, ends of shell
screw into it.
Cut away diagram on Harris/ Sheldon's site..
ottomh, perhaps there can be spacer juggling if an a asymmetric arrangement
longer axle makes more options, indicator chain is different
with the change in distance between the shifting pin and the end of the axle,
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