I've just re-installed the Poploc lever (well, an old Microshift thumbshifter actually 😀) to my Rebas, as the 29r is doing more gravel and even tarmac these days and I figured it might be handy on long climbs out of the saddle etc.
It's all operating perfectly and the thumby definitely pulls enough cable as the dial on the top of the fork leg turns all the way until it hits a hard stop. But the forks remain fully open.
I've had them serviced relatively recently and they're working perfectly (Pedals in Edinburgh do a great job) so I'm checking with them to see if they know what it might be, although I don't really want to spend a fortune getting it fixed and I live miles from Edinburgh now so hoping i can do it myself. I've read about oil leaks past the damper but apparently this would limit the fork travel and I'm still getting full travel so don't think it's that.
Anyone else come across this?
if they're not locking out it's normally down to oil not being in the right place. this can happen if they've been stored the wrong way up, e.g. if the bike has been stored vertically. it tends to settle out after a few cycles of the fork.
otherwise it'll be not quite enough oil in the damper. older ones have different amounts to newer and solo air different to dual air (if we're talking proper old) and it's not good enough to guess, you have to take the volume from the rockshox tech documents.
how old is old?
2016.
I'll maybe try and take the damper out, from recollection that's easy enough! Given the performance of the forks is otherwise impeccable and they were recently serviced I would have been surprised if oil was in the wrong places but it does seem to be the obvious issue...
The moco dampers are simple enough to remove, though it'll bring a bit of oil up with it, so you'll need a rag.
Once out, try to top it up 5-10ml at a time, try it, and repeat. It'll need enough to submerge the lockout valve at the base of the damper cartridge.
