FOX CTD High/Low Speed Circuits
Looking at the thread on the O/C CTD service got me wondering whether or not the O/C compression damper is shimmed or orifice damped, as none of the photos nor Fox diagrams seem to reveal anything other than a check shim.
This also got me thinking about the Fox Fit Trail Adjust CTD service procedures I pre-studied a few days back in anticipation of when I have to dig in to one of these nightmares (be prepared to buy more expensive proprietary tools). Now obviously this design has a shim stack in it, but it doesn't seem to me that the design has isolated high/low speed compression circuits. It looks to be that though the oil always passes through the shim stack, there is no blowoff to bypass the low speed orifice valves that are controlled by the CTD/Trail adjuster knobs.
Can anyone confirm or deny this? Like I said, I have only checked out photos on the Fox service site and not actually had one of these apart in my hands. I would hate to see Fox's high end damper not have separately adjustable high and low speed damping. Even without external high speed damping adjustment on an RLC cartridge, at least you can alter the shim stack inside independently.
For those of you wishing to investigate:
CTD Trail Adj. Compression Assembly:
CTD Trail Adj. Service Procedure:
FIT CTD with Trail Adjust Cartridge Service