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SP fork cartridge swap?
Posted: Thu Apr 30, 2009 1:04 am
by AFM327
Anyone swapped cartridges? Was re-reading the magazine piece on the RMKD bike and noticed they had put GSXR cartridges in theirs. Anyone put in Ohlins carts or the like? I'm due to have the forks serviced and thought I might upgrade them while they're off the bike.
Re: SP fork cartridge swap?
Posted: Fri May 01, 2009 12:45 pm
by Ballsout Racing
I know of someone who has. Steve Jordan of
http://www.stevejordanmotorcycles.co.uk/ Motorcycles did it for him
Re: SP fork cartridge swap?
Posted: Sat May 02, 2009 3:37 pm
by AFM327
What did he do, GSXR, Ohlins?
Re: SP fork cartridge swap?
Posted: Mon May 04, 2009 6:28 pm
by will#224
I was looking at some srad gsxr forks and externally they look very very similar.
Maybe they were near enough a straight swap?
I wondered if none sp forks could be made 'sp' just by inserting a cartridge fork and drilling the fork leg to fit the compression adjuster
Re: SP fork cartridge swap?
Posted: Tue May 05, 2009 9:08 pm
by Ballsout Racing
AFM327 wrote:
What did he do, GSXR, Ohlins?
Ohlins. IIRC it required some machining to get them to fit.
edit: Actually, they were standard, not SP forks; but I guess it would be the same?
Re: SP fork cartridge swap?
Posted: Wed May 06, 2009 6:57 am
by AFM327
I've got a couple sets of gsxr cartridges I'm going to try out. Let you all know how it works out.
Re: SP fork cartridge swap?
Posted: Fri May 08, 2009 12:59 pm
by mick41zxr
SP cartridges are same as standard. GSXR cartridges are a big improvement in the rebound circuit & relatively easy to fit, need to be shortened 10mm. Have done these & a couple of 25mm kits into ZXR's. A bit of thought anything can be made to fit.
Regards MB
Re: SP fork cartridge swap?
Posted: Sun Jul 12, 2009 9:41 pm
by ian rycroft
mick41zxr wrote:SP cartridges are same as standard. GSXR cartridges are a big improvement in the rebound circuit & relatively easy to fit, need to be shortened 10mm. Have done these & a couple of 25mm kits into ZXR's. A bit of thought anything can be made to fit.
Regards MB
can you tell me what year and model gsxr cartridges you can use,i have a set of zxr400 sp forks and one wont damp,so would like to try them,thanks,ian
Re: SP fork cartridge swap?
Posted: Mon Jul 13, 2009 1:31 pm
by mick41zxr
1996-2001 these have a 12mm damper rod, so when you shorten them take the tops down to fit the zxr fork caps.
The larger damping rod pushes more fluid through the cartridge & rebound needle is in the rebound valve mounting boss not the cap, so a big improvement over the zxr cartridge.
Regards,
MB
Re: SP fork cartridge swap?
Posted: Mon Jul 13, 2009 11:06 pm
by ian rycroft
thanks for the reply MB,Ian