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i’m sure I read someone saying they’d done this recently, can’t find the thread now of course!
The Apex on my CX bike is properly sluggish despite only being a few (very muddy) rides old. The idea of a stronger spring appeals right now. Is it a straight swap? Any hints/tips on how to do it?
For the back shift
Bin the original cable, and put in a Shimano Sil-Tec or better, and some SP-41 outer and sealed end caps. It's probably more that than the spring. If it's one of the SRAM plastic coated cables, it'll shed the coating and bunch to a stop at some point anyway.
If that doesn't work, then a trick to increasing the spring preload is to add a couple of mm of M10 washers under the mech mounting bolt. You might have to notch them to clear the B-tab. This works well if the hanger is narrow.
Fair point with the cabling. Reckon it’ll just be cheap Sram stuff. Had a nice jagwire kit kicking about for ages so I’ll remind myself of exactly what I bought and go from there.
Like the thinking with the preload too 👍
I've used the preload trick on a few old mechs on skinny steel frames. It's useful if the mech won't go into the outer most sprocket, but might not make much of a difference otherwise.
Selfish bump - New Jagwire cable installed (inner and outer) still completely baws. Will try the preload trick but do fancy the idea of a stronger spring