It was just a prototype. It will only mark up the stanchion if seal fails. Ive since gotten it machined in plastic
Ah... I see. I did an alternative method to increase the negative chamber, by going further down in the leg. It works well, makes the fork more progressive though, so no volume reducers required...
You are just changing the ratio between pos and neg volumes. Same as adding volume reducers in the positive. If you look on pinkbike, the new BOS Devilles just have adjustable neg chamber, not tokens that you add to the pos chamber
If you increase neg volume and leave pos volume the same, it makes it less progressive.
Not in my experience..... that's exactly what I've done with my custom mod. I weigh 180 pound (13 stone) I have no volume reducers in, with the fork set at 62psi I get a really supple start to the first 25-30% of the stroke and don't use the last inch of travel even after doing 6 foot drop offs to flat.
Had my pieces machined finally. You can see the difference in the negative spring chamber size between the standard negative retaining plate and the shortened one. I reckon it's about an increase of 60 - 70% in volume. This makes the start of the stroke much softer. You can reduce the effect by adding the 10mm spacers between the outer plate and the air seal plate. I'll be testing it for a bit and I will see if this mod is what they have done to the new 2017 Fox 36, and if not I'll get some machined and offered for sale.
Could you tell me pls the thread pitch and size of the machined part? Especially how long is the new neg plate tube?
If you increase neg volume and leave pos volume the same, it makes it less progressive.
Not in my experience..... that's exactly what I've done with my custom mod. I weigh 180 pound (13 stone) I have no volume reducers in, with the fork set at 62psi I get a really supple start to the first 25-30% of the stroke and don't use the last inch of travel even after doing 6 foot drop offs to flat.
Im literally the same weight range as you, 185lbs, but I'm running like 50 psi with a volume spacer in. Fork is relatively supple but definitely feel like it could be softer. have yet to use the last 30mm of travel. I've considered moving down to 40psi but i don't want to damage the fork
Had my pieces machined finally. You can see the difference in the negative spring chamber size between the standard negative retaining plate and the shortened one. I reckon it's about an increase of 60 - 70% in volume. This makes the start of the stroke much softer. You can reduce the effect by adding the 10mm spacers between the outer plate and the air seal plate. I'll be testing it for a bit and I will see if this mod is what they have done to the new 2017 Fox 36, and if not I'll get some machined and offered for sale.
Could you tell me pls the thread pitch and size of the machined part? Especially how long is the new neg plate tube?
I'm not sure, a machine shop matched it for me. I think they said it was a metric optical thread