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So I’m running a 650b trail
Bike at the moment - it has Yari / Lyrik hybrid forks on it (started life as a Yari but now has the C1 debonair airshaft / Charger 2 damper / SKF seals) running 150mm, but the bike is also ok at 140mm travel.
The forks *may* be about to self destruct. They were serviced in the last couple of months but after a wet Antur uplift day yesterday they felt awful on the ride around Machynlleth today. Like a cheap Suntour fork.
They already have a few gouges / scratches on one stanchion from a few years ago where a stone jammed between the stanchion and the fork brace - but until recently it hadn’t got any worse - I think it’s started to deteriorate a bit recently. The forks are non-boost which is a bit annoying when you want to run a big 2.6” winter tyre (Magic Mary or Hillbilly) and a mudguard - both won’t fit. Whereas my boost pike ultimate easily swallows the same tyre with an rrp big mudguard.
I’m going to whip the lowers off this week and have a look at the seals and bushings - if they look ok I’ll just change the foam rings and regrease / lube the forks. If the bushings are ok but the seals are toast I’ll change those.
My question is, could I run a 29er / 650+ fork with a 650 wheel in it? If so is the A2C likely to be longer - if so do I just need to run the fork with shorter travel? I guess I’d be looking at a red Lyrik Ultimate (assuming I could even find one in stock anywhere).
Are you assuming that think you'll convert your front wheel to boost if you need to?
My question is, could I run a 29er / 650+ fork with a 650 wheel in it? If so is the A2C likely to be longer – if so do I just need to run the fork with shorter travel.
Yes.
Yes. About 10mm
Yes.
(That’s my plan anyway)
Yes.
Yes. About 10mm
Yes.(That’s my plan anyway
Interesting - cheers. Could maybe run a 29er fork at 140mm travel then with the existing wheel as an interim option. Will see what the manufacturer says about it - assuming it might invalidate the warranty but just want their view on whether I would risk snapping the headtube off or something.
Non boost current wheel is a Hope Pro 4 - I have the official Hope spacer kit to make it boost if needed.