So – I inherited a full suspension MTB from my dad. Cannondale Super V 400. It has this rear shock that almost bottoms out when I sit on the bike. I don't think that's how it's supposed to be? So how do I tune this thing? Thanks a bunch!
by FeinwerkSau
4 Comments
I’m not gonna tell you how to adjust anything until you wash it first.
Clean. Post new picture
Really wash and scrub the dirt off the whole bike first lol.
Buy a suspension pump (https://a.co/d/23glvjZ). It is about the size of a handheld tire/basketball/soccer ball pump but it threads onto air shocks – they are low volume/high pressure pumps.
See if you can find the make/model of that shock and look up the manual on how to adjust it. Take off the silver cap and thread on the suspension pump. Pump it up a bit and check sag. Manual should state suggested sag but it is usually ~20%
Given how old the bike is there’s a chance the shock needs some servicing to really function as intended.
Make sure to cycle the shock whilst adding air, I cycle every 25 psi or so to be safe. You do this so you equalize the negative/positive air chambers.