F800GS - RXV Shiver'ed Fork Conversion - Page 5

craftycoder · 09-07-2010, 12:06 PM

They are not. The G650x lugs have less material available to machine into than the F*GS lugs do. I have a pair of RXV forks I was planning to attach to my 650 but I think I'll need to swap out the lugs completely. I may just use the stock RXV lugs and put on the a dirt bike mud guard.

Quote:

Originally Posted by D K

Do any of you guys know if the 800 fork caps (bottoms) are the same as the ones for the g650x series?

Anybody have custom fork bottoms made?

Cheers.
D

Gangplank · 09-07-2010, 12:23 PM

Quote:

Originally Posted by craftycoder

They are not. The G650x lugs have less material available to machine into than the F*GS lugs do. I have a pair of RXV forks I was planning to attach to my 650 but I think I'll need to swap out the lugs completely. I may just use the stock RXV lugs and put on the a dirt bike mud guard.

I'm pretty confused by these posts. The Caps are on top. Fork bottoms are the feet and it has a bottom adjuster.

Are the G650X the Marzocchi Shiver forks?

I believe the HP2 may have a version on some years....

craftycoder · 09-07-2010, 12:26 PM

The bottoms are also called lugs. The f800 and g650x shivers do not have adjusters on the lugs (bottoms). Both just have a hex head bolt on the bottom.

Quote:

Originally Posted by Gangplank

I'm pretty confused by these posts. The Caps are on top. Fork bottoms are the feet and it has a bottom adjuster.

Are the G650X the Marzocchi Shiver forks?

I believe the HP2 may have a version on some years....

Oso Blanco · 09-15-2010, 06:01 PM

Quote:

Originally Posted by Gangplank

100mm of air-oil space (100 mm from top)

Are you measuring the 100mm from the top of the inner fork tube or to the top of the outer tube where the cap threads on?

Gangplank · 09-16-2010, 02:03 PM

Quote:

Originally Posted by GNP77

Are you measuring the 100mm from the top of the inner fork tube or to the top of the outer tube where the cap threads on?

Since it was done by Ed McCoy at McCoy's off road in Carson City I am not really sure what measurement he used. I would think the same as every other shop.

W do you know?

-W- · 09-16-2010, 02:17 PM

Top of the outer tube, no spring, all inner parts down.

Oso Blanco · 09-18-2010, 08:18 AM

Quote:

Originally Posted by -W-

Top of the outer tube, no spring, all inner parts down.

Awesome, thanks!

giodog2000 · 09-28-2010, 07:39 AM

Hi ,

I want to convert my F650GS twin to a 800. I read most of the posts on this subject but still not sure what to buy ... I'd buy the stock 800 forks if any of you swaped them .

If not, what should I buy and how will the bottom of fork fit with my abs? Is there a way to fit the abs sensor to any forks?

thx

itsatdm · 09-28-2010, 07:51 AM

The 800 forks are bigger in diameter than the 650. To fit the tubes you need to also change out the triple tees. Your forks are damping rod design and the 800 are cartridge. I doubt the innards can be adapted even if they fit.
If you are set on doing this, I would look for the whole front end off a dirt bike, including the wheel.

craftycoder · 09-28-2010, 07:53 AM

The suspension and wheels is the main difference between the two and the suspension is not great anyway. I'd suggest getting RXV forks and putting them on your 650. Does the 650 has a single front disk? If so, you are golden. Triple trees from an 800 may be needed.

Then call Woody and have him send you spoked wheels of your liking. A little more narrow than the 800 and 18" rear seems prudent to me. That would be an excellent ride.

Quote:

Originally Posted by giodog2000

Hi ,

I want to convert my F650GS twin to a 800. I read most of the posts on this subject but still not sure what to buy ... I'd buy the stock 800 forks if any of you swaped them .

If not, what should I buy and how will the bottom of fork fit with my abs? Is there a way to fit the abs sensor to any forks?

thx

giodog2000 · 09-28-2010, 07:56 AM

Quote:

Originally Posted by itsatdm

The 800 forks are bigger in diameter than the 650. To fit the tubes you need to also change out the triple tees. Your forks are damping rod design and the 800 are cartridge. I doubt the innards can be adapted even if they fit.
If you are set on doing this, I would look for the whole front end off a dirt bike, including the wheel.

Yes , I know they are totally different. I was gona buy some forks from a KTM 950 adv with forks , trees , wheels , rotors etc....but the problem was the abs ... I'm on a tight budget and to mod everyting including buying another spoke rear wheel , I was wayyyyyy over what I wanted to invest. So now I,m looking for another solution ....

giodog2000 · 09-28-2010, 08:00 AM

Quote:

Originally Posted by craftycoder

The suspension and wheels is the main difference between the two and the suspension is not great anyway. I'd suggest getting RXV forks and putting them on your 650. Does the 650 has a single front disk? If so, you are golden. Triple trees from an 800 may be needed.

Then call Woody and have him send you spoked wheels of your liking. A little more narrow than the 800 and 18" rear seems prudent to me. That would be an excellent ride.

Yes , single disk... is 21/18 a better setup that 21/17?

Gangplank · 09-28-2010, 02:07 PM

Hi,
This worked becausee our forks and the RXV forks are the same size and produced by the same company.

If you are looking to improve the 658 forks you can try racetech gold valve inserts or you can try to rework the front end to accept a different fork tube set up.

What outside diameter are your fork tubes at both of the tripple clamps? Once you know that measurement you can see if there are some older dirt bike forks that might work. If there are then you just find a full front end from that bike - forks, wheel, brakes and bake lever (or use the BMW lever). Hope that makes sense.

As far as 21/17 vs 21/18 the 18 is more common. If you are having a set made why not get what most other non-BMW bikes have.

giodog2000 · 09-28-2010, 02:15 PM

Quote:

Originally Posted by Gangplank

Hi,
This worked becausee our forks and the RXV forks are the same size and produced by the same company.

If you are looking to improve the 658 forks you can try racetech gold valve inserts or you can try to rework the front end to accept a different fork tube set up.

What outside diameter are your fork tubes at both of the tripple clamps? Once you know that measurement you can see if there are some older dirt bike forks that might work. If there are then you just find a full front end from that bike - forks, wheel, brakes and bake lever (or use the BMW lever). Hope that makes sense.

As far as 21/17 vs 21/18 the 18 is more common. If you are having a set made why not get what most other non-BMW bikes have.

I already put in Ricor Intiminators in my stock tubes...very satisfied with them but my needs are changing and want more travel and clearance...

tehdutchie · 02-11-2011, 04:23 AM

Ill be selling my Aprilia RXV forks in the coming 2 weeks. Moving to 50mm forks.

Forks and headstocks complete.

Drop me a line if interested.

I am based in Amsterdam, Netherlands but can post anywhere. These things are heavy though, so shipping might cost will be around E100 to the US;

http://www.tntpost.nl/voorthuis/pakk...et-buitenland/

09-28-2010, 07:39 AM	#68
giodog2000 Gnarly Adventurer Joined: Apr 2009 Location: Montreal , Quebec Oddometer: 241	Hi , I want to convert my F650GS twin to a 800. I read most of the posts on this subject but still not sure what to buy ... I'd buy the stock 800 forks if any of you swaped them . If not, what should I buy and how will the bottom of fork fit with my abs? Is there a way to fit the abs sensor to any forks? thx __________________ First one out..last one in. 2011 KTM 690 Enduro R 2009 KTM 530 XC-W

09-28-2010, 02:07 PM	#73
Gangplank ^OP Advenchaintourer Joined: Jul 2003 Location: Reno/Tahoe NV 89509 Oddometer: 1,993	Hi, This worked becausee our forks and the RXV forks are the same size and produced by the same company. If you are looking to improve the 658 forks you can try racetech gold valve inserts or you can try to rework the front end to accept a different fork tube set up. What outside diameter are your fork tubes at both of the tripple clamps? Once you know that measurement you can see if there are some older dirt bike forks that might work. If there are then you just find a full front end from that bike - forks, wheel, brakes and bake lever (or use the BMW lever). Hope that makes sense. As far as 21/17 vs 21/18 the 18 is more common. If you are having a set made why not get what most other non-BMW bikes have. __________________ Shiver'd Fork Conversion Elka Suspension Group Buy Precision Trackdays Reno NV

02-11-2011, 04:23 AM	#75
tehdutchie Beastly Adventurer Joined: Jun 2009 Location: Amsterdam or on Twitter @antal Oddometer: 1,360	Ill be selling my Aprilia RXV forks in the coming 2 weeks. Moving to 50mm forks. Forks and headstocks complete. Drop me a line if interested. I am based in Amsterdam, Netherlands but can post anywhere. These things are heavy though, so shipping might cost will be around E100 to the US; http://www.tntpost.nl/voorthuis/pakk...et-buitenland/ __________________ => http://www.eatdirt.nl/blog <=

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09-16-2010, 02:17 PM	#66
-W- Flying Finn Joined: Nov 2009 Location: Finland Oddometer: 193	Top of the outer tube, no spring, all inner parts down.

09-28-2010, 07:51 AM	#69
itsatdm NoMoTDM still Gary Joined: Jun 2004 Location: Columbia, Ca. Oddometer: 3,715	The 800 forks are bigger in diameter than the 650. To fit the tubes you need to also change out the triple tees. Your forks are damping rod design and the 800 are cartridge. I doubt the innards can be adapted even if they fit. If you are set on doing this, I would look for the whole front end off a dirt bike, including the wheel.