 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Race Tech Suspension Conversion |
|
|
|
This Race Tech Gold Valve Emulator converts damper rod fork suspension systems to cartridge type damping.
The following describes how to modify and assemble the damper rods. |
|
|
|
 |
|
|
|
|
Photograph courtesy of PDQ Motorcycle Developments |
|
|
|
|
|
|
|
|
 |
|
|
|
 |
|
|
The original damper rod internals are removed by breaking the plastic scroll mechanism out with a screwdriver.
The top of the damper rod has to be either ground or machined out to enable the Gold Valve to sit on top. ========> |
|
|
|
|
|
|
|
The completed modified damper rod is the one on the left. =========> |
|
|
|
|
|
|
|
The rebound holes (which the scroll valve operated behind to give adjustable damping by the screws on top of the fork leg) are welded up and a 2mm dia. hole drilled adjacent to the top weld. (left photo)THIS IS THE ONLY NON-ADJUSTABLE REBOUND DAMPING AVAILABLE
The compression holes are increased in number to 6 and opened out to 8mm. This is to allow the maximum flow of oil to get to the Gold Valve Emulator. The holes have to be thoroughly de-burred of sharp edges and cleaned of swarf. =====> |
|
|
|
|
|
|
|
 |
|
|
|
|
 |
|
|
|
|
|
|
|
|
 |
|
|
|
|
The modified damper rod assemblies screw back into the lower fork legs, the valve placed on top and the oil air gap set to 150mm with the spring and spacer removed and the forks fully compressed.
Ride height or sag can be adjusted by the fork top threaded adjusters
The compression damping is adusted by loosening or tightening the allen bolt on the Gold Valve which varies the tension on the disc valve to allow the oil to flow easier or harder past the disc valve at high speed (as in fork movement speed) Low speed damping is controlled by the predetermined orifice size in the valve. |
|
|
|
|
|
The 0.9kg/mm linear springs and spacer replace the standard progressively sprung 0.64kg/mm ones |
|
|
|
|
|
|
|
|
Compression damping can only be adjusted by removing the Gold Valve from the forks - a bit of a fiddle at first but after changing it I found that Race Tech's advice of 2 turns of preload was too firm for the TDM and my weight (80kg) and found 1.5 turns gave the best damping characteristics.
www.sportrider.com has more info on suspension setup. |
|
|
|
|
 |
|
|
|
|
|
|