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Old 04-12-2013, 06:24 PM   #361
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Quote:
Originally Posted by DoWorkSon View Post
Any idea how to tell difference between the soft/stiffer springs? I'm not sure what I have.

I am not sure. Often springs have a marking on them so look for that. Here is a link to the AF1 website where they sell them but you can probably get a set of .50's from racetech or eibach through a suspension shop or call Ed McCoy. I know he can get custom springs made for around $115 to $125 a pair.

http://www.af1racing.com/store/Scrip...idCategory=180
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Old 04-13-2013, 06:52 AM   #362
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Just checking 3 things before I jump in:

(1)

Shivers have 300mm travel
BMW has 230mm
A 40mm spacer brings the Shiver guts back to 230.....

30mm is left in the balance - - is that just negated by the longer BMW uppers?

(2)

No problem finding 300mm Shiver 45s >> how important is the 'RXV' designation? A lot of resellers don't know what they have.

(3)

I already have Ohlins .55 springs, and the sag/ride height is perfect in the stock forks. These will still fit into this conversion with the changing overlaps going on inside, correct? Does the new cartridge and top cap affect the preload much?

I'm sure this all makes sense when you have the parts in front of you. Thanks to all of you for pursuing this and keeping it alive!
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Old 04-13-2013, 09:32 AM   #363
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Quote:
Originally Posted by DoWorkSon View Post
Any idea how to tell difference between the soft/stiffer springs? I'm not sure what I have.
Measure the wire diameter, length, and coils per inch and compare with others. Not sure what each one actually measures though.
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Old 04-14-2013, 12:41 AM   #364
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Quote:
Originally Posted by NCD View Post
Just checking 3 things before I jump in:

(1)

Shivers have 300mm travel
BMW has 230mm
A 40mm spacer brings the Shiver guts back to 230.....

30mm is left in the balance - - is that just negated by the longer BMW uppers?


(2)

No problem finding 300mm Shiver 45s >> how important is the 'RXV' designation? A lot of resellers don't know what they have.



(3)

I already have Ohlins .55 springs, and the sag/ride height is perfect in the stock forks. These will still fit into this conversion with the changing overlaps going on inside, correct? Does the new cartridge and top cap affect the preload much?


I'm sure this all makes sense when you have the parts in front of you. Thanks to all of you for pursuing this and keeping it alive!
(1)
The Shiver cartridges are about 40 mm longer. The missing 30 mm are created by shorter innerlegs in the Shiver fork, that allows it to compress more.

(2)
In the beginning of this thread "W" used a Shiver factory as donor fork.

(3)
The new cartridge has a different springseat and you have to make new spacers to get correct preload. My spacers are 15 mm with the .55 springs and 230mm travel.
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Old 04-14-2013, 07:10 AM   #365
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Others have used Husky donor forks. I believe any Marzocchi Shiver should have a top cap & internals that will work. You may just need to check the donor forks length and travel and adjust accordingly.
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Old 04-14-2013, 07:50 AM   #366
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I think I found some workable forks.

Does anyone have the ID and OD specs of the travel reducing spacer and preload spacer handy? I don't think thats in the thread anywhere that I could find.

I could get that stuff en route in the meantime.
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Old 04-14-2013, 10:14 AM   #367
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Originally Posted by DoWorkSon View Post
Any idea how to tell difference between the soft/stiffer springs? I'm not sure what I have.
EpicX is correct on how to do the measurements. You then compare it to the Table in the Marzocchi Manual to figure out what stiffness they are. Page 91, Table 4. You really only need the length and the wire diameter. My husky's have the lightest springs unfortunately. The 3.8.
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Old 04-14-2013, 10:17 AM   #368
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Quote:
Originally Posted by NCD View Post
I think I found some workable forks.

Does anyone have the ID and OD specs of the travel reducing spacer and preload spacer handy? I don't think thats in the thread anywhere that I could find.

I could get that stuff en route in the meantime.
I'm unfortunately stuck doing house decorating bull crap (shoot me now) all weekend, but shoot me a PM and remind me to measure mine for you. I've got everything apart waiting on the machining to be done. Gangplank mentioned that you can get the spacers from Moose I believe, but I'm not too worried about it, since I am getting the suspension guy to take care of it for me.
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Old 04-14-2013, 11:24 AM   #369
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Here is a crappy pic of the internals I am using...



The Shiver on left and the F800 on right.

If I am measuring correctly, the Shiver internals only have about 1" more travel than the F800..... When comparing both springs, the F800 are about 1/2" longer than Shiver

However, Shiver internals seem to be slightly different from all the pics I have seen on here.

The spring seat sits up higher on my internals than others i have seen(towards top of tube, not dropped below it). Not sure if this is made up by a shorter cartridge body or what....

So I am a little confused on what type of spacing I will need to shorten the travel.... It seems like with these internals, there will be less travel because of how the springs sits in them.... But I could be wrong.

Anyone have any ideas on the spacing?
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Old 04-14-2013, 12:19 PM   #370
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And that post brings up my next question:

All the spring talk in this thread . . are we using springs sold for the 800GS - - or springs sold for the Shiver fork?

I assumed I could reuse my Ohlins 800GS springs. But they will be too long, no? I plan to reduce travel back to 230 like stock.
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Old 04-15-2013, 10:21 AM   #371
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Quote:
Originally Posted by NCD View Post
And that post brings up my next question:

All the spring talk in this thread . . are we using springs sold for the 800GS - - or springs sold for the Shiver fork?

I assumed I could reuse my Ohlins 800GS springs. But they will be too long, no? I plan to reduce travel back to 230 like stock.
I used the Shiver RXV springs. They come in soft .45 and stiff .50. The .50 worked good for me and put me in the right SAG range for my weight.

With real USD forks the spring's job is to get you into the right sag settings. If you can get that right then the rest is handled by the valving not different springs.
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Old 04-16-2013, 02:03 PM   #372
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Just saw these over on the Aprilia Forum - stiffer fork springs for $100.

http://www.apriliaforum.com/forums/s...ight=RXV+forks
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Old 04-16-2013, 02:41 PM   #373
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Just so you guys are aware I can offer the machining of the lower fork lugs at a reasonable price and a quick turn around.
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Old 04-17-2013, 04:32 PM   #374
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Just so you guys are aware I can offer the machining of the lower fork lugs at a reasonable price and a quick turn around.
What's a reasonable price?
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Old 04-17-2013, 04:36 PM   #375
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Spring specs... :-D

Just got this info in from another inmate if anyone needs the spring specs

Originally Posted by NCD
Add this to your knowledge bank. BMW springs 480mm, RXV 512mm.
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