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-   -   BMW 1150GS Clutch Splines spacer kit (http://www.advrider.com/forums/showthread.php?t=964425)

cele0001 03-19-2014 12:32 PM

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.

http://i1369.photobucket.com/albums/...g?t=1395256902


http://i1369.photobucket.com/albums/...g?t=1395256941


http://i1369.photobucket.com/albums/...g?t=1395257248

http://i1369.photobucket.com/albums/...g?t=1395257231

http://i1369.photobucket.com/albums/...ps2f17fe3f.jpg


Thank you for your time.

tbarstow 03-19-2014 01:27 PM

So how thick is your spacer?

vagueout 03-19-2014 02:58 PM

Beautiful work.:*sip*

j911brick 03-19-2014 04:31 PM

Nice simple solution.

Anorak 03-19-2014 08:27 PM

Quote:

Originally Posted by j911brick (Post 23733667)
Nice simple solution.

Put "solution" in quotes for a while.

liviob 03-20-2014 06:03 AM

Looks like the Bruno mod sans rivets. Using bolts makes assembly a little easier. Do you plan to sell the spline hubs?

_cy_ 03-20-2014 12:15 PM

Quote:

Originally Posted by cele0001 (Post 23731969)
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.

http://i1369.photobucket.com/albums/...g?t=1395256902

Thank you for your time.

very nice .. so did you custom CNC above parts?

_cy_ 03-20-2014 03:22 PM

pretty slick .. how much?

http://i1369.photobucket.com/albums/...g?t=1395257248

Ravenslair 03-20-2014 10:03 PM

Quote:

Originally Posted by _cy_ (Post 23741161)
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.

sweatmark 03-20-2014 10:16 PM

Quote:

Originally Posted by cele0001 (Post 23740741)
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!

cele0001 03-20-2014 10:35 PM

Quote:

Originally Posted by sweatmark (Post 23743819)
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.

madjimbo 03-20-2014 11:32 PM

Definitely interested!

_cy_ 03-21-2014 03:04 AM

Quote:

Originally Posted by cele0001 (Post 23743883)
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

http://team-monkey.smugmug.com/Busin...IMG_2254-M.jpg

cele0001 03-21-2014 03:16 AM

Quote:

Originally Posted by _cy_ (Post 23744323)
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.

liviob 03-21-2014 05:00 AM

Quote:

Originally Posted by cele0001 (Post 23743883)
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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