K2 / Proflex Riders Group
General => Tech Forum => Topic started by: 4500_rider on February 28, 2007, 08:21:47 pm
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Bought a new & unused 5th element cvt gravity air shock off ebay USA (i'm in the UK)... $100... good deal considering the current US/Sterling exchange rate.
The shock is being sent into TF Tuned Shox for a service and if need be the '05 parts upgrade as I am not sure what year the Gravity came into being.
After that its going on the back of my 4500 as a replacement to the NR4 - which has served me problem free and faithfully for nearly 4yrs.
I tried to mount the Air last night and it didnt quite fit... am going to have to etch away a small piece from either the carbon plates under the seat post or the steel plate on the swingarm to make space for the valve on the shocks main chamber and to give a bit of clearance for the main chamber itself....
I intend to use a Dremel Grinder to do this.... but just wanted your guys opinions on which piece to grind - the carbon plate or the steel plate on the swingarm?
Cheers!
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if it were me , i would grind the swingarm, its easier to do a neater job. just remove what you need, ad a little black touch up paint and no one will even notice the mod. they'll be to busy staring at a carbon beauty. (thats my 2 cents anyways)
Matt B
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Bought a new & unused 5th element cvt gravity air shock off ebay USA (i'm in the UK)... $100... good deal considering the current US/Sterling exchange rate.
The shock is being sent into TF Tuned Shox for a service and if need be the '05 parts upgrade as I am not sure what year the Gravity came into being.
After that its going on the back of my 4500 as a replacement to the NR4 - which has served me problem free and faithfully for nearly 4yrs.
I tried to mount the Air last night and it didnt quite fit... am going to have to etch away a small piece from either the carbon plates under the seat post or the steel plate on the swingarm to make space for the valve on the shocks main chamber and to give a bit of clearance for the main chamber itself....
I intend to use a Dremel Grinder to do this.... but just wanted your guys opinions on which piece to grind - the carbon plate or the steel plate on the swingarm?
Cheers!
I have 2 questions. What is the i2i of your shock? Rotating the shock won't help?
I remember some posts regarding removing the plates, and shimming or fabricating new plates out of alum sheet metal, and then pop riveting them on.
Many people have dremeled the swingarm with good results, mounting the shock with shaft up. If for some reason the mount fails, I imagine an new on could be bonded to it, but I have not seen it done.
Terry
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shovelon.... the shock length is 7.875 x 2.0
I did rotate the shock so that it was shaft up... dont know if this effects performance?
Even with it mounted shaft up I still need to etch a part of the metal plate on the swing arm off becuase of the valve on the main chamber + the main chamber itself makes contact with plate too.
Looking at it I'd imagine that i'd have to etch off less of the CF plates under the seatpost than I would off the metal plate on the swingarm.
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im currently in the same position as you as ive just taken delivery of a brand new 200mm i2i x fusion air shock for my oz (for the rediculous sum of £30) and after machining myself some new bushes im going to grind a bit of the swingarm mount away so the valve sits in nice as im also mounting it shaft side up. hopefully if i can work out how to put pics up ill post a pic in the morning of the finished article. my risse astro 5 is now back up for sale with everything to fit the oz for £30 + p&p.
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I'll take the astro 5 please.
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Actually it occurs to me - will it be too stiff to use with an adapter on my 857??
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the astro 5 is 205mm i2i unfortuantely so it would be too long for an 857 but you are more than welcome to try it.
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just mounted the shock after 2 mins of grinding and all is well except i have to loosen the shock off to put air in it as the pump fouls on the swingarm
(http://i80.photobucket.com/albums/j186/jeffhop/mount.jpg)
(http://i80.photobucket.com/albums/j186/jeffhop/mounted.jpg)
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and this is the side view.
(http://i80.photobucket.com/albums/j186/jeffhop/k2oz.jpg)
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i think i will be doing the same to mine.... once its mounted i'll post some pics up.
would be good to know how you get on with the X-fusion.
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the astro 5 is 205mm i2i unfortuantely so it would be too long for an 857 but you are more than welcome to try it.
Should work with my San Andreas though shouldn't it? I'll buy it and try it out. Will email you for payment details.
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Have dremeled the alu mount on the swing arm over the weekend and the shock is now mounted... soon as I get my camera to work will post some pics.
Took the bike out over the weekend and the ride is so much better than the NR-4.... to be expected I suppose!
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i had mine out on saturday and i was impressed, i think i may have had too much air in the shock for once as i wasnt getting full travel but it felt very nice on climbs with very little bobbing, one thing i did notice was my tyres, ive read that bonty jones mud x are supposed to be good in mud, well i thought they were very average to say the least having said that the mud was about 6 inches deep in places!
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Apologies for digging up an old thread,just fitted one of these x fusion shocks to my 4000,fitted it with rebound adjuster toward swing arm with no grinding involved,bit fiddly adjusting rebound admittedly but it can be done and can add air easily without undoing shock.Was there a reason you mounted your shock that way round?Anyone have any feedback on these shocks?
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hello keith, the reason i mounted it this way was because the rebound adjuster was going to interfere with the mounting bracket, maybe the shocks are at a slightly different angle on the oz and the 4000, just a thought. anyway welcome aboard and its nice to see another uk rider on here. as for the x fusion shock, i have to say im impressed i always found that i couldnt get the air pressure right on the risse so i took it off and used an nr2 for a while before i got the x fusion did you get yours off ebay from onzaboy?
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Yes onzaboy supplied mine,I was initially worried the shock,being a bit shorter than the nr4 would alter the geometry of the bike,but its fine,suppose its only the same as fitting longer travel forks