Hi All,
Hopefully the attached sketch will enable those of you who would like to make your own "Taylor Dow" type damper valves for their BSA's
The original TD valves used 3/8in. diamater rods threaded 3/8 BSF and a 9/32in ball bearing (try finding those now!!)
Pattern ones sometimes have 10mm rods and 8mm ball bearings,
On my Super Rocket the length from the underside of the fork cap to the end of the damper valve body is
16 and 11/16in.
The overall length of the rod will depend somewhat on the depth of the domed nuts you use on top of the fork caps
copper washers inside and on top of the caps will stop leaks
I intentionally did not draw the top cap setup, If you cannot see this in your "head" then this project is not for you
Some people either braze a nut to the underside of the fork caps (and rechrome) or make solid caps drilled and threaded to hide the fact that the dampers are fitted
Rather than drilling through and using a dome nut on top!!
**When fitted the damper valve must be submerged in the fork oil to work**
I found 20w oil made the forks too stiff and now use 10w fork oil enough to submerge the valve when the fork is extended
****NOW THE IMPORTANT BIT,****
This sketch is provided for information only
NO liability is accepted for its use or misuse or anything else either!!
Cheers
John O R