The 'D' rod refered to on the RPM Fork valve instalation guide

[racerrad8]

There is a nut on the bottom, IIRC, and it interferes with the adjuster, so I had to make room for it.  I don't have a gas welding set-up, and I didn't feel like going to a friends house to borrow theirs. So I left it in.  Could have just brazed the holes closed if I had a gas set-up, and removed the adjuster alltogether.

A nut on the bottom of the valve you installed?

I would be interested in a photo or two when you pull it apart.

The RPM fork valve does not require any modification like the other valve manufactures do.

Like I said earlier, set the hole to the small one on the adjustable damper rods, which is the same on the late model non-adjustable damper rod, like Leon has, drop in the valves, set the oil level install the springs, cut the spacers to the proper length, install the cap and enjoy the ride.

Randy - RPM

[1tinindian]

"D" stands FOR nothing, it is a D-shaped rod, which everybody on here has started calling the damper rod all of a sudden....  The Damper rod is the part which holds the sliders on the stanchion tubes, and performs the actual damping via holes drilled in it. These holes allow the oil to pass from the bottom side to the upper side of the forks (poor terminology), controlling oil flow and "damping" the oscillations of the spring(s).
In the exploded view that was posted earlier, the damper rod is #7. There is a piston ring at the top of the damper rod which seals the rod to the inside of the stanchion tube, so oil will not pass by uncontrolled.

I think we are on the same page Rich.
But as an owner of a later model, such as myself, you can see where the confusion sets in when a particular part that no longer exist in an assembly is called out by the same name.
I think we have beat this dead horse long enough, and the point has been made, and the confusion cleared up.

Thanks all,
Leon

[racerrad8]

The damper rod (D rod) is removed.
Randy - RPM

I am sorry if this line has been the issue of confusion. The "Damper Rod" is #7 in the diagram below and the valve portion of the forks.


The "D" rod is the damper rod adjusting shaft that is in the shape of "D". It is attached to #3 in the breakdown on the early model forks. The rod is cut off for the installation of the RPM fork valves and any other valve for that matter.

As you can see it is not a portion of the late model forks that require modification.

Sorry if the similar terminology has created the confusion and hopefully this is the final explanation needed to understand.

Randy - RPM

[nurse]

Hope so, I never realised that such a simple question could gather such momentum!

Just a thought For installs like this would there be any mileage in an expert (eg randy et al) posting up YouTube clip of the finer points, seeing is believing after all!