dixon Posted January 20, 2014 Report Share Posted January 20, 2014 " not mechanically minded rider " My rear shock still has bounce in it, but when I bounce the shock I can push so it knocks asif it's bottoming out, I've Tightend the spring up but it still does it! Spring knackered? Shocker knackered? Quote Link to comment Share on other sites More sharing options...
copemech Posted January 21, 2014 Report Share Posted January 21, 2014 Shocker should have a bit of cush coming back up, similar to forks, if it feels like a pogo stick it is knackarde, or if too harsh same. Send it in to Splatshop for rework if it is done. Ck your linkage and lube and tighten things here as well. may be simple. 1 Quote Link to comment Share on other sites More sharing options...
dixon Posted January 21, 2014 Author Report Share Posted January 21, 2014 Still feels ok, not like a pogo or to hard, but can easily bounce it down to make it knock! ( presumed to be bottoming out) the linkage bearings are about ready to be replaced could these be causing this knock at the bottom? It seems expensive to send it for a re-con if not needed ! Many thanks Quote Link to comment Share on other sites More sharing options...
copemech Posted January 21, 2014 Report Share Posted January 21, 2014 Should be a rubber jounce bumper on the shaft of the shock. Be sure it is not torn or missing. 1 Quote Link to comment Share on other sites More sharing options...
dixon Posted January 22, 2014 Author Report Share Posted January 22, 2014 The rubber stopper is intact, I've just replaced all linkage bearings, can still compress shocker to make metal-metal knocking noise, spring seems fine and is compressed to 130mm , if the gas has gone could it be letting the rod hit the top of the shocker body? Or can I tell anyway if the shocker is knackered? Quote Link to comment Share on other sites More sharing options...
tony27 Posted January 22, 2014 Report Share Posted January 22, 2014 (edited) Is the noise happening when the shock compresses or returns to normal position, if it's when it returns to normal position then damping is too light & needs adjusting or a service, if it's when compressed it may be something completely unrelated like the stand Edited January 22, 2014 by tony27 Quote Link to comment Share on other sites More sharing options...
dixon Posted January 22, 2014 Author Report Share Posted January 22, 2014 It's on compression, right at the bottom asive it's bottoming out, or the rod inside the shocker is hitting , just wondered if there's anyway to tell if shockers gone without sending it off for refurb Quote Link to comment Share on other sites More sharing options...
thats_a_five Posted January 22, 2014 Report Share Posted January 22, 2014 Do you have a riding buddy who has the same model bike? If you can swap their shock into you bike, you can easily tell if it is the shock or some other thing making the noise. Quote Link to comment Share on other sites More sharing options...
copemech Posted January 23, 2014 Report Share Posted January 23, 2014 (edited) I suppose one could remove the shock, then the spring. It normally requires 60-70 lbs of force to compress the shaft against the internal gas charge of the unit. Inspect for bent shaft by rotating and feel for smooth operation and return damping and no squishy sound as in low oil. I am not aware of any cushion other than the jounce damper. Edited January 23, 2014 by copemech Quote Link to comment Share on other sites More sharing options...
dixon Posted January 23, 2014 Author Report Share Posted January 23, 2014 Thanks for the advise, It really does sound like a very solid metal on metal noise, Quote Link to comment Share on other sites More sharing options...
dixon Posted January 24, 2014 Author Report Share Posted January 24, 2014 Problem solved, took the shocker off the bike, removed the spring to find No rebound / compression, Aparently the chrome chips/flakes off the rod especially under the rubber stopper, causing damage to the seals and a slow leak, causing damage to the piston, re-build required Quote Link to comment Share on other sites More sharing options...
copemech Posted January 24, 2014 Report Share Posted January 24, 2014 (edited) Splatshop can fix it, prolly half the cost of a new one, or he may even give you some PX toward an Ohlins? Edited January 25, 2014 by copemech Quote Link to comment Share on other sites More sharing options...
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