Air Bump Rebuild

[Babaganoosh]

Anybody ever rebuilt a set of these? mine leak and have discharged the nitrogen. I can't seem to find how much oil it takes.

I currently have a set of 2.0 fox's with a 3 inch shaft length. I want to shorten them to a 2.0 or maybe 2.5 The fox chart says for a 2.5 to use 100cc's of oil for a 3 or 4 inch bump it calls for 125cc's. Does anyone know how this formula works?

 

[ktmoutfront]

How are you shortening the travel?

 

[Babaganoosh]

How are you shortening the travel?

Dom spacer I side, the body is the same length just needs the spacer.

Skip around and you can get the idea.

 

[ktmoutfront]

That does shorten the stroke, but my understanding is that it's not the right way to do it. I know sway a way and Bilstein do not recommend shortening that way. They are designed to work at the length of the tube. Maybe the others are ok to do that with.

 

[Babaganoosh]

Interesting, guess I need to do more research and reading.

Why is it hard to find this info? Is it really uncommon for the average person to rebuild their own shocks?

 

[ktmoutfront]

at a. Bet I've rebuilt a couple hundred for people. Scared of the unknown. I'm ok with that.

 

[Babaganoosh]

The biggest thing I see is getting the oil level correct.

 

[miniwally]

King 2" bumps and 4" bumps are the same can just different length spacers inside. We shortened mine years ago with the internal spacers.

I can't help on the oil amount as I think at the time King told us how much. Did you try calling Fox, you can check at ORD because their doing stuff with Fox now too.

 

[ktmoutfront]

King 2" bumps and 4" bumps are the same can just different length spacers inside. We shortened mine years ago with the internal spacers.

I can't help on the oil amount as I think at the time King told us how much. Did you try calling Fox, you can check at ORD because their doing stuff with Fox now too.

Did you change the valving to slow them down?

 

[Babaganoosh]

Did you change the valving to slow them down?

I have thought about this, I bought these used and have no idea what they are inside. Although I'm sure they are just the standard off the shelf items and will be fine.

King 2" bumps and 4" bumps are the same can just different length spacers inside. We shortened mine years ago with the internal spacers.

I can't help on the oil amount as I think at the time King told us how much. Did you try calling Fox, you can check at ORD because their doing stuff with Fox now too.

Thanks Brandon, I'll have to give them a call. Didn't think about it and didn't really want to bother them much sense I didn't purchase from them.

 

[Blazooki]

Ask for Chris...He loves taking random tech phone calls...can you do any foreign accents?

 

[Babaganoosh]

Ask for Chris...He loves taking random tech phone calls...can you do any foreign accents?

I usually do when I call, although everyone is very helpful at ORD. Chris knows my truck very well.

 

[miniwally]

Did you change the valving to slow them down?

If I remember correctly the only run rebound damping and use air pressure for compression.

I can’t recall changing the valvinf at all.

 

[Babaganoosh]

Done, thanks ORD and @Rugby_7 for answering my multiple phone calls.