JD rear shock fade

Does anyone else have a problem with rear shock fade?
My JD 929 rear shock was installed 16000km ago, and it works great to start with, but after 1/2hr of bad roads the damping fades badly.
If I adjust it for this condition, it feels super hard for the first 1/2hr.
So it's either too hard to start with, or too soft later.
The difference is huge. To the stage that the rear end will wallow over a bad dip mid corner once heated up.
If I only ride smooth roads (a rarity here in Australia) it stays manageable no matter how long the ride is.
But a hot day and bad roads is a recipe for an unhappy rider.
Is it just my shock?

 

I can't say that I have noticed any fade on my 929 shock (which means it either doesn't happen, or I'm too dumb to notice). Maybe you've lost the nitrogen and are getting frothing/cavitation when the shock gets worked up? I'd get in touch with Jamie in the first instance.

 

From everything I have read here and over at the "other vfr forum", Jaime is good people. Give him a chance to help you.

 

Contact Jamie. He is pretty good at answering emails and I have only heard good things about his work. Sounds like the type of guy that would want to help you get this sorted out.


Jamie@daughertymotorsports.com

260-710-4049



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Could be seals, need oil change, low nitrogen. Might need a freshen up.

 

Jamie got back to me, advised me to check nitrogen pressure.
Should be 190~200psi.
Haven't got around to it yet, valve is hard to get to.