OzVMX Forum

Clubroom => Tech Talk => Topic started by: caps 999 on June 16, 2009, 08:56:30 pm

Title: fox air shock rebuilding
Post by: caps 999 on June 16, 2009, 08:56:30 pm

i just got a set of air shocks in need of a re build i was wondering how hard they are to do or does any local stores rebuild them also mine are 17.5 inch idealy i did want 17 so if theres any one out there who may wanna trade a set im willing to listen

Title: Re: fox air shock rebuilding
Post by: JohnnyO on June 16, 2009, 09:12:52 pm

They are not hard to rebuild, i've done a few sets but you will need nitrogen. You can get the parts from Thor Lawson in the US.

Title: Re: fox air shock rebuilding
Post by: clutchslip on June 16, 2009, 09:23:53 pm

Hey Caps, if you check out Thor's Air Shox specific site you will see he lists a couple of options for reducing effective length overall. One of these might suit you more than trading yours if you already have good bodies and shafts?

http://ltthor.home.comcast.net/~ltthor/forsale.html

Title: Re: fox air shock rebuilding
Post by: magoo on June 16, 2009, 09:49:40 pm

I'm happy to do them for you using nitrogen. If you install a top out spring it will shorten them by about 1/4" and also solve the stiction problem that they suffer from. I've got all the parts in stock as well.

Title: Re: fox air shock rebuilding
Post by: LWC82PE on June 16, 2009, 10:45:58 pm

cheapest way to shorten them is to fit an internal spacer. Thor sells these. He can also shorten the shafts or bodies.

here is another source for parts

http://www.stallionmachineshop.com/fox_air_shox

Fox say you can use normal air, but oil will deteriorate quicker, but obviously nitrogen would be better.

Title: Re: fox air shock rebuilding
Post by: JohnnyO on June 17, 2009, 07:55:22 am

The advantage with nitrogen is it doesn't heat up and expand as much as air so the pressure doesn't increase like it does using air when the shock heats up.

Title: Re: fox air shock rebuilding
Post by: evo550 on June 17, 2009, 07:53:40 pm

Quote from: JohnnyO on June 17, 2009, 07:55:22 am

The advantage with nitrogen is it doesn't heat up and expand as much as air so the pressure doesn't increase like it does using air when the shock heats up.

......and it is moisture free, compressed air is full of it.

Title: Re: fox air shock rebuilding
Post by: magoo on June 17, 2009, 08:07:00 pm

For years I ran air and the shocks worked ok but I'm now set up with a bottle of nitrogen and the correct gauges and the difference is dramatic. Set up properly with nitrogen Fox Airshox work as well if not better than any shock on the market, including Ohlins I reckon.

Title: Re: fox air shock rebuilding
Post by: LWC82PE on June 17, 2009, 08:41:17 pm

This will be helpful as well, although i think its a little old now

http://home.iprimus.com.au/hyrockpk/Manuals/RebuildingFoxAirShox.pdf