The air gap in the forks gives the oil space to move into as it compresses when you brake. If you had no gap, the forks couldn't compress at all, because the system would be completely sealed.The only effect changing the air gap has is that it effectively acts as an extra "spring" when the forks are approaching full compression, ie the air gets squashed by the oil and should stop the springs from bottoming out.If the air gap is too big, the springs will bottom out under hard braking, meaning they can't absorb any more bumps.It might be worth draining the forks into a measuring jug and checking you didn't get the amount wrong in the first place by mistake (not that I've ever done that...)
Easiest way is buy a small syringe
Quote from: unfazed on 05 January 2022, 05:14:21 pmEasiest way is buy a small syringe Useful tip, I'd never heard that one before