Just to round off this thread for anyone who finds it when searching...
I took out the OEM Spacers from the forks which (to answer my original question at the start of the thread!) are 131mm long, 37mm in diameter and have a 1.2mm wall thickness.
From my earlier experiment of unscrewing (but not removing) the fork caps, I'd estimated that about a 7.5mm change in length would be approximately what I was looking for (possibly a bit less, it was difficult to measure exactly how much I'd unscrewed them by).
So I cut two sections 123mm long from the 32mm PVC pipe and put those into the fork tube with three penny washers (each 1.5mm thick) on top of them.
After my long-suffering GF took some measurements, I got a Rider Sag figure of 30mm, so I took out one of the penny washers and got a Rider Sag figure of 36mm and a Static Sag 26mm.
Given that Hyperpro recommend a Static Sag figure of 24mm and Rider Sag of 35mm, I think that's pretty damn spot on :thumbup
I put the OEM Spacers back in and now all I need to do is someone to make another set of spacers which are 126mm long (5.1mm shorter than the originals) and I should be sorted!
(And, if, somehow, it turns out they're too short, I can always stick a washer back on top of them :thumbup )
I took out the OEM Spacers from the forks which (to answer my original question at the start of the thread!) are 131mm long, 37mm in diameter and have a 1.2mm wall thickness.
From my earlier experiment of unscrewing (but not removing) the fork caps, I'd estimated that about a 7.5mm change in length would be approximately what I was looking for (possibly a bit less, it was difficult to measure exactly how much I'd unscrewed them by).
So I cut two sections 123mm long from the 32mm PVC pipe and put those into the fork tube with three penny washers (each 1.5mm thick) on top of them.
After my long-suffering GF took some measurements, I got a Rider Sag figure of 30mm, so I took out one of the penny washers and got a Rider Sag figure of 36mm and a Static Sag 26mm.
Given that Hyperpro recommend a Static Sag figure of 24mm and Rider Sag of 35mm, I think that's pretty damn spot on :thumbup
I put the OEM Spacers back in and now all I need to do is someone to make another set of spacers which are 126mm long (5.1mm shorter than the originals) and I should be sorted!
(And, if, somehow, it turns out they're too short, I can always stick a washer back on top of them :thumbup )