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Old 03-19-2014, 01:32 PM   #1
cele0001 OP
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BMW 1150GS Clutch Splines spacer kit

Hello everybody.
Some new input on this subject regarding modified clutch hub. This is what I have been playing with for the past month or so.

UPDATE: 10/18/2014. No more parts in stock.
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Thank you for your time.
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WORN INPUT SPLINES CLUTCH HUB SPACER R1150XX
http://advrider.com/forums/showthread.php?t=964425

cele0001 screwed with this post 10-18-2014 at 04:50 PM
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Old 03-19-2014, 02:27 PM   #2
tbarstow
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So how thick is your spacer?
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Old 03-19-2014, 03:58 PM   #3
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Beautiful work.
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Old 03-19-2014, 05:31 PM   #4
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Nice simple solution.
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Old 03-19-2014, 09:27 PM   #5
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Originally Posted by j911brick View Post
Nice simple solution.
Put "solution" in quotes for a while.
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Old 03-20-2014, 07:03 AM   #6
liviob
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Looks like the Bruno mod sans rivets. Using bolts makes assembly a little easier. Do you plan to sell the spline hubs?
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Old 03-20-2014, 01:15 PM   #7
_cy_
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Quote:
Originally Posted by cele0001 View Post
Hello everybody.
Some new input on this subject regarding modified clutch hub. This is what I have been playing with for the past month or so.



Thank you for your time.
very nice .. so did you custom CNC above parts?
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Old 03-20-2014, 04:22 PM   #8
_cy_
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pretty slick .. how much?

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Old 03-20-2014, 11:03 PM   #9
Ravenslair
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pretty slick .. how much?
Put me in line for one as well. Toss it in the tool box and hope to not need it for quite a while.
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Old 03-20-2014, 11:16 PM   #10
sweatmark
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Originally Posted by cele0001 View Post
Top left is custom machined spacer. The rest are BMW cluch parts (minus the rivets)
This is the next step.
Nicely done!
This, plus your emergency spark plug coil trick, UNI filters (over on the Rockster board)... You do good work.

Thanks!
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Old 03-20-2014, 11:35 PM   #11
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Originally Posted by sweatmark View Post
Nicely done!
This, plus your emergency spark plug coil trick, UNI filters (over on the Rockster board)... You do good work.

Thanks!
Thank you . I like to play. But this is an attempt to provide the parts needed to modify the existing clutch to become "Bruno" clutch. The idea is the same. I am still testing mine in the bike. It is riveted now. UNI filters are the mod to make removing the transmission easier. It is out in 30 minutes and back in in 45.
The spacer has been designed for BMW clutch. I did not play with Siebenrock clutch.
I want to make sure that the average guy can perform this mod using basic tools. Dremmel or grinder, punch, hammer. Hydraulic press would be nice for the rivets but we will see. I don't want to go into discussion about causes of stripped splines, it has been talked about ad nauseam. My real test would be to get somebody with stripped splines to install modified clutch and nothing else, no additional parts.
I believe that the bike would have long happy life. Either way it is not ready yet.
If there is enough interest I will run 10 parts. Right now I am hovering at about $100 for the kit but nothing finalized yet.
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WORN INPUT SPLINES CLUTCH HUB SPACER R1150XX
http://advrider.com/forums/showthread.php?t=964425
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Old 03-21-2014, 12:32 AM   #12
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Definitely interested!
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Old 03-21-2014, 04:04 AM   #13
_cy_
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Quote:
Originally Posted by cele0001 View Post
Thank you . I like to play. But this is an attempt to provide the parts needed to modify the existing clutch to become "Bruno" clutch. The idea is the same. I am still testing mine in the bike. It is riveted now. UNI filters are the mod to make removing the transmission easier. It is out in 30 minutes and back in in 45.
The spacer has been designed for BMW clutch. I did not play with Siebenrock clutch.
I want to make sure that the average guy can perform this mod using basic tools. Dremmel or grinder, punch, hammer. Hydraulic press would be nice for the rivets but we will see. I don't want to go into discussion about causes of stripped splines, it has been talked about ad nauseam. My real test would be to get somebody with stripped splines to install modified clutch and nothing else, no additional parts.
I believe that the bike would have long happy life. Either way it is not ready yet.
If there is enough interest I will run 10 parts. Right now I am hovering at about $100 for the kit but nothing finalized yet.
so you think your spacer would work without changing out stripped splines?
spacer would allow undamaged splines to mate up with new clutch disc. giving back aprox 1/3 to 1/2 of original spline length


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Old 03-21-2014, 04:16 AM   #14
cele0001 OP
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Originally Posted by _cy_ View Post
so you think your spacer would work without changing out stripped splines???
6 speed has 19 mm of spline length available. It does not use 6 mm, so only 13mm are actually carrying the load. Thank you GSAddic for the info. If you look at the worn shaft, (and you dont have to look far),

(EDIT: ONe just popped up above this post.)

there is about 4mm that is only partially worn. And you are gaining the second point on contact on the front of the shaft to stabilize the clutch plate further. Both of these areas are "virgin" more or less. So I think that this middle portion would be safely bypassed. Speculation at this point so an official tester would be nice.
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WORN INPUT SPLINES CLUTCH HUB SPACER R1150XX
http://advrider.com/forums/showthread.php?t=964425
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Old 03-21-2014, 06:00 AM   #15
liviob
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Quote:
Originally Posted by cele0001 View Post
Thank you . I like to play. But this is an attempt to provide the parts needed to modify the existing clutch to become "Bruno" clutch. The idea is the same. I am still testing mine in the bike. It is riveted now. UNI filters are the mod to make removing the transmission easier. It is out in 30 minutes and back in in 45.
The spacer has been designed for BMW clutch. I did not play with Siebenrock clutch.
I want to make sure that the average guy can perform this mod using basic tools. Dremmel or grinder, punch, hammer. Hydraulic press would be nice for the rivets but we will see. I don't want to go into discussion about causes of stripped splines, it has been talked about ad nauseam. My real test would be to get somebody with stripped splines to install modified clutch and nothing else, no additional parts.
I believe that the bike would have long happy life. Either way it is not ready yet.
If there is enough interest I will run 10 parts. Right now I am hovering at about $100 for the kit but nothing finalized yet.
A spacer for the Siebenrock clutch disk would need to be made thicker than for the OEM BMW clutch disk as it's hub is approximately .125" shorter.
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