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Old 05-20-2008, 07:53 AM   #1
Daithi OP
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XCountry rear-shock into a XChallenge ? ?

I want to fit XCountry rear-shock into a XChallenge, I saw a stock air shock fail and would prefer a conventional spring shock,
I've already bought the XCountry shock and should have it early next week. Anybody know anything about how well this would
work, has anybody on here tried it ?

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Old 05-20-2008, 10:37 AM   #2
DiscoDino
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Assume that the Xco shock will be much shorter in length and in travel than the Xch one...no?
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Old 05-20-2008, 12:34 PM   #3
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Quote:
Originally Posted by Daithi
I want to fit XCountry rear-shock into a XChallenge, I saw a stock air shock fail and would prefer a conventional spring shock,
I've already bought the XCountry shock and should have it early next week. Anybody know anything about how well this would
work, has anybody on here tried it ?

I'm willing to bet you'll like I had a nice long discussion with Gary Emig about the rear shock for the X and as I recall, he felt that the shock was to long. I upgraded to the Ohlins and it still feels too long and I'm going to have it shortened. I have the preload dialed down so much that the Spring gets loose when I leave the ground.

Anyone else get that shoved forward feeling on the X? The Airshock was terrible and off throttle, it gave me way to much steering

How much was it?
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Old 05-20-2008, 12:54 PM   #4
Daithi OP
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Quote:
Originally Posted by DiscoDino
Assume that the Xco shock will be much shorter in length and in travel than the Xch one...no?
I'm certain it will be, it's one of the reasons I jumped at the chance to try it.

Quote:
Originally Posted by crankshaft
I'm willing to bet you'll like I had a nice long discussion with Gary Emig about the rear shock for the X and as I recall, he felt that the shock was to long. I upgraded to the Ohlins and it still feels too long and I'm going to have it shortened. I have the preload dialed down so much that the Spring gets loose when I leave the ground.

Anyone else get that shoved forward feeling on the X? The Airshock was terrible and off throttle, it gave me way to much steering

How much was it?
Sorry crankshaft, your signiture had me staring at the screen for a while there, then I realized it was a signiture and not a message to me.


Anyhoo, €60 which I think is about $60, which is very cheap. I thinkk i know what you're saying about the forks, they dive so much and the air-shock rises so much the XC becomes the ideal platform for handlebar-flips ? I'm 17 stone so I'm no light weight and I had the air pressure really low and managed better than better riders than me did. Having the risers also helped along with very little air pressure, also I prefer having a conventional shock (spring). My worry is that the shock will bottom out in the really rough stuff because of the spring being too soft and I'm also concerned about the travel.
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Old 05-20-2008, 01:19 PM   #5
Johnnyboxer
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It will definitely fit and lower the bike, but you'll have to drop the forks in the clamps, to compensate
I know somebody who has done it
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Old 05-20-2008, 01:38 PM   #6
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Quote:
Originally Posted by Johnnyboxer
It will definitely fit and lower the bike, but you'll have to drop the forks in the clamps, to compensate
I know somebody who has done it
Hi Johnnyboxer,
Do you mean you know someone who has the XCountry shock in an XChallenge ?
I'm all

I had the forks lowered to compensate for the soft back end (see pic below)


But I could go another bit I suppose, do you have any info on the results on the other XChallenge ? ?
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Old 05-20-2008, 02:13 PM   #7
crankshaft
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Quote:
Originally Posted by Daithi
I'm certain it will be, it's one of the reasons I jumped at the chance to try it.


Sorry crankshaft, your signiture had me staring at the screen for a while there, then I realized it was a signiture and not a message to me.

Opps

Maybe its my crappy riding style, but I like the front end higher and maybe a bit more sag in the rear For the street its fine, but when I'm on the trails, or a dirt road I find the ruts make it handle wierd with the airshock.
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Old 05-20-2008, 06:59 PM   #8
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Quote:
Originally Posted by crankshaft
I had a nice long discussion with Gary Emig about the rear shock for the X and as I recall, he felt that the shock was to long.
Gary and I chatted about that a bit when he finished up the G650X clamps. The Ohlins shock is too long is what we'd decided. I'm not really sure Ohlins did a good job here, and has really smashed a square peg into a round hole with respect to the XCh.

With the plush Husky/Zoke Shivers up front, the Ohlins feels like a worn out log truck. I need to pull the shock from my 450EXC and take a look at how one of those WP shocks for an RFS bike might be modified to work in the XCh.
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Old 05-21-2008, 12:49 AM   #9
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In a similar sort of vein - what do you guys think about an XMoto shock on the XChallenge? Too long/stiff?
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Old 05-21-2008, 03:29 AM   #10
Daithi OP
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Quote:
Originally Posted by Storm
In a similar sort of vein - what do you guys think about an XMoto shock on the XChallenge? Too long/stiff?
This morning I was in a bike shop that had the XChallenge, XMoto and the
XCounty. I didn't have a tape measure, all I had was a long cable tie, to
compare the three, but the sprung shock of the XMoto appeared to be the
same length as the XChallenge's air shock, but the XCountry's sprung shock
was definitely at least an inch shorter than the other two, the bike looked
a lot lower.

As to wheather the XMoto shock on the XChallenge would be too long, I
think they're the same length. Don't know which type of stiffness will be the
issue but there's a lot could be altered by pre-load, oil viscosity and/or varying
the damping adjuster.

Hopefully Johnnyboxer will post pics or have info on someone who's done this
already.
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Old 05-21-2008, 05:09 AM   #11
crankshaft
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Quote:
Originally Posted by Daithi
This morning I was in a bike shop that had the XChallenge, XMoto and the
XCounty. I didn't have a tape measure, all I had was a long cable tie, to
compare the three, but the sprung shock of the XMoto appeared to be the
same length as the XChallenge's air shock, but the XCountry's sprung shock
was definitely at least an inch shorter than the other two, the bike looked
a lot lower.

As to wheather the XMoto shock on the XChallenge would be too long, I
think they're the same length. Don't know which type of stiffness will be the
issue but there's a lot could be altered by pre-load, oil viscosity and/or varying
the damping adjuster.

Hopefully Johnnyboxer will post pics or have info on someone who's done this
already.
According to Ohlins, the shock they sold me for me X challenge is the same one they offer for the X moto. They valve it a bit differently is all.
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Old 05-21-2008, 05:12 AM   #12
crankshaft
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Quote:
Originally Posted by gaspipe
Gary and I chatted about that a bit when he finished up the G650X clamps. The Ohlins shock is too long is what we'd decided. I'm not really sure Ohlins did a good job here, and has really smashed a square peg into a round hole with respect to the XCh.

With the plush Husky/Zoke Shivers up front, the Ohlins feels like a worn out log truck. I need to pull the shock from my 450EXC and take a look at how one of those WP shocks for an RFS bike might be modified to work in the XCh.
I called Ohlins and they offered to shorten the shock for me, I just need to figure out how much......
Might be an option for you intead of trying to pound yet another square peg in a round hole.
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Old 05-21-2008, 06:09 AM   #13
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Quote:
Originally Posted by crankshaft
According to Ohlins, the shock they sold me for me X challenge is the same one they offer for the X moto. They valve it a bit differently is all.
According to the recommendations at the Öhlins website they are different in both length and stroke. Must be a little more than valving ...

Part no: BM 633
Type: S46HR1C1
Length: 343,5mm
Stroke: 72,5mm
Fits: BMW G 650 Xmoto(2007-2008)

Part no: BM 636
Type: S46HR1C1
Length: 360mm
Stroke: 89mm
Fits: BMW G 650 Xchallenge(2007-2008)
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Old 05-21-2008, 09:37 AM   #14
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Quote:
Originally Posted by P3R
According to the recommendations at the Öhlins website they are different in both length and stroke. Must be a little more than valving ...

Part no: BM 633
Type: S46HR1C1
Length: 343,5mm
Stroke: 72,5mm
Fits: BMW G 650 Xmoto(2007-2008)

Part no: BM 636
Type: S46HR1C1
Length: 360mm
Stroke: 89mm
Fits: BMW G 650 Xchallenge(2007-2008)
Thats only about a .65" delta on the stroke...? Not all that much...?
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Old 05-21-2008, 11:59 AM   #15
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Quote:
Originally Posted by kutch
Thats only about a .65" delta on the stroke...? Not all that much...?
Now that you mention it, it's exactly the same difference in length. So a 16,5 mm shorted Xchallenge-shock may very well end up being the same as the Xmoto-version. You learn something new every day ...
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