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What is the reason you run the LSC fully closed?
I tough it's best the run LSC fully open. Because then you benefit the most from the support on small unevenness. (based on this video
)
I don't have 18min to waste on that video, but LSC fully open means the damper is not doing any chassis control and relying fully on the spring to keep the fork high in the travel. That's just a very poor setup.
 
So... I switched to the sticky rebound a few weeks back prior to yet a other 2 day visit to Bike park Wales then off to Dyfi for the first time. I set several PB's at BPW as I was riding significantly faster than previous years. Pretty sure I'm a fan although my rebound window is now narrowed to 3 clicks from fully closed.

Overall the bike felt very good until we visited Dyfi where the speeds are much higher... I then ran into what I assume are separate issues with high frequency trail buzz hammering my hands and had to open LSC front and back to reduce HSC to sensible levels for the super high speed buzz. (Speed on these downhill straights is in the region of 35 mph upwards).

I've yet to check bushing clearance but in the meantime is there a significant improvement to be had with lapping the rebound piston to remove preload on the shim stack?
 
So... I switched to the sticky rebound a few weeks back prior to yet a other 2 day visit to Bike park Wales then off to Dyfi for the first time. I set several PB's at BPW as I was riding significantly faster than previous years. Pretty sure I'm a fan although my rebound window is now narrowed to 3 clicks from fully closed.

Overall the bike felt very good until we visited Dyfi where the speeds are much higher... I then ran into what I assume are separate issues with high frequency trail buzz hammering my hands and had to open LSC front and back to reduce HSC to sensible levels for the super high speed buzz. (Speed on these downhill straights is in the region of 35 mph upwards).

I've yet to check bushing clearance but in the meantime is there a significant improvement to be had with lapping the rebound piston to remove preload on the shim stack?
Do I understand correctly that you have mounted the Shockcraft tuning? And yet you are experiencing problems? In my opinion, Shockcraft advises to adjust the shimstack in this case.
 
Are your forks also so wallowy with Stage 2 Tuning?

Dougal Said,probably the sealhead's Seal could bei Broken which makes The negative spring Not affect the spring curve enough.....strangely the Fork IS Very sensitive,or movés easily , so It was difficultt for me to believe that. So now I wanted to remove The rod to Exchange the sealheads oring against a new one, Bit can Not lossen Tage Air Piston,because I See no screw top loosen it
 
Do I understand correctly that you have mounted the Shockcraft tuning? And yet you are experiencing problems? In my opinion, Shockcraft advises to adjust the shimstack in this case.
Yes the fork is quite harsh on small bump at high speed. I have to open up LSC a touch more than I'd like to soften the HSC. I'm not yet sure if the root cause is bushings or too hard a shimstack. Second question was with regard to the effect of lapping the rebound piston face?
 
Why do you assume it isn't lapped and still has some kind of preload?

Picture from #1 (check-valve side)
View attachment 2149155

Picture from #277 (shim-stack side)
View attachment 2149156

I've not made any assumption. I have installed 3 pick and mix kits - One on my own fork and two on friends Mezzers and I can assure you that none of the rebound pistons are lapped. Unfortunately this is the only photo I have:
Image
 
Damned, I installed 2 and I was pretty sure they were lapped... My bad then.
No worries Setlaz - these things happen! :cool: However, I'm now intrigued as the rebound piston in your photos clearly looks like boith sides have been lightly dressed given the progressive removal of the anodizing towards the OD of the piston. Is this how you received them from Shockcraft?

Have you been in touch with Shockcraft about this?
I have not been in contact with Dougal but both your responses pehaps suggests that I should? So, are the 'Pick and Mix' rebound pistons meant to be lapped?
 
I have not been in contact with Dougal but both your responses pehaps suggests that I should? So, are the 'Pick and Mix' rebound pistons meant to be lapped?
I haven't installed a 'pick and mix' myself yet. And therefore find this discussion interesting. The question to Dougal would then be. Is it necessary, for proper operation, that the pistons have been machined?
 
I haven't installed a 'pick and mix' myself yet. And therefore find this discussion interesting. The question to Dougal would then be. Is it necessary, for proper operation, that the pistons have been machined?
Yes the piston rebound ports are machined but I do not know if the piston faces are meant to be skimmed. I shall ask shortly.
 
Is there a recommendation how many free play the comp shims should have?

With the different shim stacks there's always a different free play, but how much OK and when should we start adding shims to achieve a specific shim stack height?
 
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