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-   Sportster Motorcycle Transmission, Clutch, Primary & Secondary Drive (http://xlforum.net/forums/forumdisplay.php?f=35)
-   -   Grenade plate fix with XR1200 parts... (http://xlforum.net/forums/showthread.php?t=2072418)

Bluto 12th February 2019 22:47

Grenade plate fix with XR1200 parts...
 
I replaced my grenade plate with two steels and a friction plate, that worked but often caused a very annoying squeal when taking off in first gear, a common problem from what I've read.
Did some research and learned that the XR1200 (and Buell XB's) use an entirely different judder spring setup BUT use the same regular friction and steel plates as an XL. Ordered the XR parts as my dealer didn't have them.
Finally got the XR1200 parts today and they work great...the grenade plate is gone AND the clutch squeal (sounded a lot like a slipping auto belt) I gained when I replaced it with two steels and a friction plate, plus clutch takeup is smoother now too. Basically the first friction plate is replaced with the XR1200 items and the spring plate is replaced with two steels and a friction, only need to buy two steels as the original first friction plate is reused.
Could have gone with an aftermarket clutch however my bike is only Stage 1 and doesn't need it, some of them squeal too, plus some of the makers are persnickety about what lube is used...wanted a clutch that was happy with the standard HD recommended stuff.
The photo shows the XR1200 parts plus the two extra steel plates needed, total cost about $65. BTW the spring has to go in the right way, the FSM section for the XR1200 clutch has a diagram that details this.

https://lh3.googleusercontent.com/dg...024-no-tmp.jpg

BKB 12th February 2019 23:29

Thanks, Bluto. Good info.

Bluto 13th February 2019 03:29

Quote:

Originally Posted by BKB (Post 5728558)
Thanks, Bluto. Good info.

You are welcome!
This site has been a great resource when doing work on my Sportster, glad I got a chance to contribute something in return that is hopefully useful to some.

IXL2Relax 13th February 2019 10:10

Bluto - Thanks for testing out this combination as a possible solution to the XL Spring Plate failures...

I would like to see at least a few months of wear & tear on this arrangement before including it in the Sportsterpedia...

Please post up again on this thread when you have a few thousand miles on the fix...


It should be pointed out that the XR1200 Clutch Basket is not the same as used on the XL models - The XR version has Compensating Springs built into the base to help with the 'shock' of clutch engagement...

================================================== ======
Associated Thread - http://xlforum.net/forums/showthread.php?t=2044017
================================================== ======

XR Parts to Replace XL Spring Plate
===========================

37894-02 Judder Spring
37895-02 Judder Spring Seat
37897-02 Friction Clutch Plate - Narrow

Extra Steel Plates (2ea)
37913-90 Steel Clutch Plate



IXL _______ >>>> My Motorcyle Chronicles Are Here <<<<
For FREE Sportster Tech Info, catalogued from the XLForum,
Check Out The Sportsterpedia

b0fh 3rd April 2019 00:02

Grenade plate fix with XR1200 parts...
 
may be a stupid question, but if I already have the grenade ‘eliminated’ by adding 2 extra steels and 1 extra friction (all the rest is stock) all I need to buy is the judder spring and spring seat? and hopefully it will make the clutch more ‘soft’ to engage and eliminate the squeaalllll?

edit: answering my own question, guess not - looking at ronnies diagram the ‘new’ spring goes in first and that friction plate that sits on top of the spring is different.

interesting idea but not sure I like the idea of losing 1 friction disk to fit that second spring in (basically going back to being a stock clutch with the grenade replaced by the judder spring).

but interesting idea nonetheless - let us know how it works out after several k miles!

Bluto 3rd April 2019 02:54

The judder spring and seat don't fit on top of the narrow "B'" plate shown above, they fit inside of it...so in effect you gain 1/2 of a friction plate with this setup. Anyway, put about 1000 miles on it so far and am confident that I'll have a trouble free clutch for many miles.
You need the three XR1200 parts as shown above plus two steel plates to do this fix...

http://www.stratoserver-presse25.de/...c/Kupplung.jpg

b0fh 26th April 2019 14:12

just double checking...

stock clutch is 6 steels + 1 spring plate + 8 friction plates
my current setup is 8 steels + 9 friction plates

yours would be 7 steels + judder spring parts (incl. narrow friction) + 7 regular friction plates, correct? not sure if I like the idea of dropping 1 1/2 friction plates... but I don't see any problems with the setup either!

cheers

Bluto 26th April 2019 16:32

Quote:

Originally Posted by b0fh (Post 5744253)
just double checking...

stock clutch is 6 steels + 1 spring plate + 8 friction plates
my current setup is 8 steels + 9 friction plates

yours would be 7 steels + judder spring parts (incl. narrow friction) + 7 regular friction plates, correct? not sure if I like the idea of dropping 1 1/2 friction plates... but I don't see any problems with the setup either!

cheers

No, that math is not correct. As I said the first friction plate is replaced with the XR1200 parts, then it is reused along with two new steel plates to replace the spring plate, so in the end you have 8 friction, 8 steel, plus the narrow XR1200 B plate.
FWIW the Buell XB and XR1200 use 7 f, 7 s, plus the B plate...diagram below.

http://images.imagessite.com/OEM_IMA.../HD09XL027.gif

b0fh 26th April 2019 16:57

that's why I asked, the diagram for XRs calls only for 7 of each - guess the XL basket is a bit bigger so you can fit in 8 of each. good to know, we end up with an even better clutch than the XRs :)

Davo_137 26th April 2019 19:57

Better than the XR? That depends on how you look at it, the XR has that spring setup, I guess you could call it a Cush drive, it soaks up shock loads that cause wear to the gearbox.


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