BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


1Back to top Go down   Final Drive Spline Lube Cradle Empty Final Drive Spline Lube Cradle on Fri Sep 02, 2016 6:46 am

knave

knave
active member
active member
Final Drive Spline Lube Cradle Fittin14
The tool I built can be described as a final drive stand, or a jig, a cradle, and a dolly.  It is an aide in all the three steps of servicing the rear splines of a mono-lever K bike like mine:
Step 1 -- Remove final drive from drive shaft.
Rear wheel has already been removed, brake calipers secured, and rear portion of speedometer cable disconnected and secured.
The stand/cradle attaches to the final drive with two plastic 12 inch zip ties before removal.  After the shock absorber is unbolted, the four Allen bolts connecting the final drive to the drive shaft are removed.  The stand, with the final drive mounted upright, is then rolled down the ramp which has the same slope as the drive shaft in its running position.  The stand in no way replaces the need to prop up or strap the drive shaft in position before disassembly.
Step 2 – Cleaning, inspection, and lubing the splines themselves.  This is the most important step. With the final drive upright and secure in the stand/cradle, this phase can be done as thoroughly as needed without the risk of kicking over a final drive leaning shakily against the wall while it sits on the garage floor. An old toothbrush and solvent are good for removing old lube material, often high in molybdenum disulfide paste, a popular ingredient for lubricating splines. After cleaning both input and output splines I apply a generous amount of fresh lubricant/paste with on old 1 inch paint brush that has that has lost most of its pliability.
Step  3 – Reassembly.  Here is where you need a third hand to spin the brake rotor slightly so the output and input splines mate and slip into place.  An unsupported final drive is heavy and awkward to hold and guide, requiring both hands for many of us.  But with the final drive on the stand/cradle, which is sitting on the ramp, one hand is enough.  The other hand is used to spin the brake rotor.
 
The final drive has a beveled shape with few flat surfaces to use when molding a jig.  I did it in many steps.  I cut out wood and metal, bending different gauges of wire to match the bevel.  I then covered the bent wire with fiberglass cloth and multiple layers of epoxy resin and filler.  With great care I avoided contaminating the final drive exterior(or interior) with uncured epoxy.
The sheet metal inner surface of the stand, facing the brake rotor, must be completely flat and smooth, so as not to damage the rotor in motion. Look for a groove at the bottom of the cradle where the final drive drain plug fits undisturbed.
Construction of the tool required a lot of work.  A 3D printer might provide a means of reproducing the molded cradle portion of this project.  The other parts are not that hard to build and I expect there are riders who could offer improvements.
Final Drive Spline Lube Cradle Inacti14
Final Drive Spline Lube Cradle Inacti15



Last edited by knave on Fri Sep 02, 2016 6:51 am; edited 1 time in total (Reason for editing : add view showing contact area of cradle)

    

2Back to top Go down   Final Drive Spline Lube Cradle Empty Re: Final Drive Spline Lube Cradle on Fri Sep 02, 2016 7:34 am

Chocolate

Chocolate
Life time member
Life time member
Hello!

Well done and a nice stand you have.

Cheers


__________________________________________________
Only a few activities make me experience my senses in a way motorcycle riding does, it is like swimming in the nude in a river.
K75 BA/1992 ABS, K75 BA/1991 noABS, Ducati, Mobylette M1/1973
    

3Back to top Go down   Final Drive Spline Lube Cradle Empty Re: Final Drive Spline Lube Cradle on Fri Sep 02, 2016 8:31 am

charlie99

charlie99
VIP
VIP
interesting application ...should work well

well done


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OFinal Drive Spline Lube Cradle Au-log10

"redframe" rs "bitsa"  with many contributions from the k100 community ,,with many thanks
    

4Back to top Go down   Final Drive Spline Lube Cradle Empty Excellent! on Sun Oct 15, 2017 6:59 pm

Ace Handler

Ace Handler
active member
active member
Well if you don't mind I will copy your design based on the photos/description to use in my garage too - thanks! cheers

Ace


__________________________________________________
"The World is a Highway, and we are but merely Riders"
1992 K100RS Perlsilber 16v. VIN 6493830
    

5Back to top Go down   Final Drive Spline Lube Cradle Empty Re: Final Drive Spline Lube Cradle on Sun Oct 15, 2017 11:32 pm

knave

knave
active member
active member
@Ace Handler wrote:Well if you don't mind I will copy your design based on the photos/description to use in my garage too - thanks! cheers

Ace

Hello Ace,
I've been hoping one of the forum members would strike out on their own, using my project description and images as inspiration.
Good luck, and please share your efforts if and when you feel ready.
Knave


__________________________________________________
Final Drive Spline Lube Cradle Knave11
Dave Mosen (knave)
90' K75 
90' R100 Classic
    

6Back to top Go down   Final Drive Spline Lube Cradle Empty Re: Final Drive Spline Lube Cradle on Mon Oct 16, 2017 4:14 pm

duck

duck
Life time member
Life time member
If you drain the gear oil first then it can be laid on its side.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum