Tuning RAW vs FX regulator two different systems

[mubhaur]

What I see is that in FX Amp regulator, in order to increase or decrease the regulator pressure, the adjuster screw is adjusted and this results into increase or decrease in the piston travel.

While on the other side in RAW regulator, once the piston travel has been set, it is not adjusted rather the pressure on the (()) washers is increased or decreased by tightening that screw. In this case the contact surface of peek and brass remains at same place while only the pressure on () washers is reduced or increased.

Please share your experience on this difference and pros and cons of these two systems.

Bhaur

 

[Motorhead]

When you have a FIXED seat height the spool travel afforded by the bevels never changes. all your doing is adding or taking away some preload.

When you have a FIXED bevel stack the range of motion asked of the bevels is no longer a constant and under higher setting the bevels get reflexed more to get the seat closed and at lower pressure less so. * being a bevels spring rate is based on a value being less that its total to flat range being exceeded that may damage or at minimal reduce the spring rate from where bevel was when un stressed to near it limits.

I have found with a lots of bevels in the stack it really does not matter, where regs with just 3-5 bevels in play they are less accurate in set point accuracy over time.
There is more to the story in reg seat design, spool travel etc ... Just not here & now.

 

[SilentSquirrel]

Hello @Motorhead and @mubhur

Selfishly I ask that you keep this topic alive!
I have learned a good bit already and hope there is a lot more to come

Thanks
Edward