Performance Fork Rebuild
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,830
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From: poway
... "Related" my Friend, "Related" 
... and really wasn't calling for snake_eyes to commentAnyways ...
Since you @Max Headflow , brought up a good point about the new +2 "Travel" and "coil bind", I thought I'd do a little checking and follow-up
Total Stock "Physical" Travel is approx 4-15/16" (4-11/16 + 1/4" of Total Rebound (top out) spring compression)
New +2 "Physical" Travel is now approx 6-15/16" (~6.938" ref)
RT FRSP S4430100 Springs have a 170mm Travel (6.693") ... Hmm
Here is a picture of the valve from a 41mm tube..
Club Member
Joined: Oct 2011
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From: Nor Cal
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,830
Likes: 7,968
From: poway
What are you looking for Max? @Max Headflow ?
Do you have the check valve? Wondering what it looks like.. Also if the check valve don't sit inside that bottom part does it cut the travel? The pics you show of the bottom piece looks like there's an O ring or is it just a plastic version of the 41mm check valve?
Seasoned HDF Member
Joined: Dec 2005
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From: poway
@multihdrdr Thanks a bunch. So the plastic ring floats to allow more oil to move into the area between the tope of the valve and the top of the damper? It does look like the flow would be restricted. Also the plastic ring has some pretty big gaps in it.. The 41mm tube Had about 0.16mm (0.0063 in) on an 18mm tube clearance with a steel floating valve when the valve closed. I bet it seals better closed on rebound and flows more open.
Sorry if this is OT but the info is great.
If Snake eyes gets a chance, it would be good to know what he gets for travel. Easy to do after assembly but before capping the preload.
I think that the bottom cone completely slows the fork to limit the real effective travel but i simply measure with the fork empty and not worry about rebound spring compression. One adds travel, the other taketh away..
Sorry if this is OT but the info is great.
If Snake eyes gets a chance, it would be good to know what he gets for travel. Easy to do after assembly but before capping the preload.
I think that the bottom cone completely slows the fork to limit the real effective travel but i simply measure with the fork empty and not worry about rebound spring compression. One adds travel, the other taketh away..
Club Member
Joined: Oct 2011
Posts: 11,174
Likes: 2,480
From: Nor Cal
Agreed, but Technical info can be kind of sparse here ... even on the easy stuff, I can't get people to report back on. 
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Stellar HDF Member
Joined: Aug 2019
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From: Unreconstructed
Sheeeeit, I'm still waiting for the replacement damper rods. I'm guessing it'll be a couple of weeks before the forks are back together then the rest of the bike needs to go back together also. And since I live in Minnesoviet, it's going to be late April before the weather is warm enough and the roads have been cleared anyhow, ****, might even be May.