Hi, new here but have been trying to get my hands on another PDS.
mattbrown: Can I ask how much you paid? I watch ebay for a PDS fairly regularly - what did he list it under? I need a pointer to help get one myself!
Take care of the boots to keep them lubed, they are the only weak link I ever found with either the Inversion or the PDS (both are Inverted, of course) as they used the same boots - PDS's clear ones were much better.
They were built in Wilsonville, OR for several years (well imported there at least).
I have owned 2 of them and 3 of the black "Inversions". I try every year to buy back my old Marble Peak with my second PDS on it and I think I may get it next year.
I knew Steve Wilson (the "son" in Hal-son) years ago and bought several forks from him when the PDS first came out and RockShox stole their designs. Halson Designs won a major lawsuit against Rockshox but it was for future use of their designs. That is the year RS switched to the "Judy Jack" and the lawsuits had to start over. I lost track of him about 7 years ago - bummer. They had some killer designs in the works that rivaled forks that came out for many years after that but they quit production after RS broke them financially and stole their ideas - as I understand it.
I have a large selection of the polymer if someone is looking, I know how tough it can be to find Halso stuff!
PDS uses open cell poly and it is much larger than the Inversion poly.
I also have a spare Inversion and that poly.
If anyone knows where I can get my hands on a PDS, please let me know.
If I can answer questions on the forks, let me know, I was in their factory more than once and rode with Steve's brother and went to the LBS they started themselves called "Bicycle Factory Outlet" for a couple of years until it closed. (3 outlets I think)
The Inversion has the crown forward about an inch of the steerer with the dropouts centered on the lowers, the PDS has the straight crown centered on the steerer with the drop-out tabs forward of the lowers about an inch
(on centers). The PDS used air ports to dampen the force of the travel and was nearly impossible to bottom in normal hits as the harder the hit, the more resistance to compression it had. A slow hit was soft and cushy but in a big hit it got pretty stiff as it neared the bottom. Both forks are unbelieveably responsive and torsionally stiff.
Inversion was $289 retail and the PDS was $499 retail in the mid / late 90's.
They take about 10 minutes to strip, clean, lube, and reassemble and as long as you do this BEFORE they get nasty or dry out, both forks last nearly forever.