Rockshox reba rl 2012 travel problem
neilybun
Posts: 5
Can anyone help? I have a pair of rockshox reba's (2012 RL model 29er) that I bought second hand. I got them cheap as I was on budget to build a 29er. As soon as I got them I downloaded all the imformation I could from the Sram website and stripped them apart. There was no obvious damage and internally they were in good shape, apart from the dust seals and some emulsified oil in the lower legs ( think the previous owner had jetwashed them). I replaced all the old seals with new ones whilst carefully following all the Sram instructions. They were fantastic, supersmooth, until when adjusting the negative pressure the dustseal popped off. I decided to strip and inspect them and found the retaining sir-clip had popped off and the air had escaped. I carefully inspected for damage and put it back together making certain the clip was seated perfectly. Job done?
My big problem is now that when I pump up the negative chamber it sucks the stanchions into the lower legs reducing the travel by around 40%. Previously I set them +135, -125 and that gave me around 30% sag with 100mm travel. They still work but I get about 25% sag and 70mm of travel at the same settings.
I have stripped them again, on someones advice, checed and replaced the oil on the motion control incase there was sort of hydrilolic locking but no change?????? :evil:
My big problem is now that when I pump up the negative chamber it sucks the stanchions into the lower legs reducing the travel by around 40%. Previously I set them +135, -125 and that gave me around 30% sag with 100mm travel. They still work but I get about 25% sag and 70mm of travel at the same settings.
I have stripped them again, on someones advice, checed and replaced the oil on the motion control incase there was sort of hydrilolic locking but no change?????? :evil:
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Comments
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Have you checked the positive pressure again? Sounds to me like the negative is higher than the positive0
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Yeah tried it several times positive pressure is 135?0
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"antm21" you got me thinking when you said about the negative being higher than the positive. I had been checking the pressures by letting the air out and re-inflating, a bit silly now I think about it. Turns out it was just a dodgy schader valve in the positive chamber. What was confusing is that it would let enough air in to extend the forks fully but then stop working but the pump would show the pressure building on the gauge. New valve for a few pence and problem solved. It's always the simple little problems that cause the most confusion, thanks for your help.:-D and0
