I think my air spring isn't functioning 100% correctly and I'm curious if anyone else has observed similar behavior in their fork and how you addressed it. long post coming.
I wanted to try adding volume spacers in order to reduce psi a bit and retain support in the mid- and bottom-end of the travel. when I depressurized the air spring, my fork sucked down way into the travel. perhaps this is normal, if only the + air chamber is depressurized and the - chamber retains pressure? not sure. in any event, when I removed the air top cap, there was clearly pressure underneath as the top cap and transfer rod were pushed up and out of the fork (fairly gently, thankfully). so I interpreted this as air trapped in the fork lowers.
I cleaned and slick honey'd the air transfer rod and reinstalled (without adding any volume spacers) thinking that perhaps all I needed was for the air spring to equalize. however when I repressurized the fork to 60 psi as per Fox's instructions, I could not get the two chambers to equalize -- I believe this should have been evident by the pressure dropping on my shock pump when the - spring got pressurized.
so I disassembled the top cap again, thinking that perhaps there was too much slick honey in the little cut-out area on the air transfer rod where the pos and neg springs should equalize. cleaned the transfer rod cutout, reassembled, same problem--air chambers won't equalize.
so I dropped the lowers on my fork to remove any air trapped, cleaned and serviced the seals/foam rings/lower legs and reassembled per Fox's instructions -- repressurizing the air spring to 60 psi before reinstalling the lower legs. when I had everything back together, the fork would not compress at all and felt totally locked out. depressurized (fork sucked down again) and repressurized, felt a little better, but there was clearly alot of air that had again been trapped in the lowers. so I did the zip tie trick and released a good amount of air from the lowers. after that, when I aired back up, the air spring still didn't noticeably equalize, but it felt relatively normal on a test ride -- still a little firm for the pressure I was running but otherwise functioned normally.
so something doesn't seem right to me and I suppose the next move is to disassemble the whole air spring and see what's going on inside, but I'm curious if any of you guys who have been riding the 2015/2016 36 have had similar behavior -- fork sucking down when you let out all pressure, not equalizing when you air it back up, getting significant amount of air in the lowers etc. -- and how you addressed it. any thoughts?
Mtbr's 2016 Winter Biking GearReviews and Roundups
Results 1 to 4 of 4