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Old 10-07-2014, 03:55 PM   #1
mattcfish OP
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U-joint part #?

Anybody have a part # for the u joint on a 70 to 80's airhead? Can you get them through Spicer? Not readily available anywhere I've checked. I've got a shaft I need to rehabilitate. Plan to do the machining myself, just need the part number and a brand name.
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Old 10-07-2014, 09:37 PM   #2
Mark Manley
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Motorworks do reconditioned drive shafts and might be able to supply replacement bearings.

http://www.motorworks.co.uk/vlive/Home/index.php
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Old 10-07-2014, 10:50 PM   #3
BOETJE
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Quote:
Can you get them through Spicer?
The dimensions are 19x48 mm I believe.
I got mine from a local drive line shop

http://elbeusa.thomasnet.com/item/se...sion/0-106-010
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Old 10-07-2014, 11:33 PM   #4
ME 109
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The Hardie Spicer uni-joint that I've now used twice, is part No. K5-A587

The size is 19mm x 44.4mm and is listed as a 'staked bmw motorcycle'

They also list 44, 47 and 48mm.

I think the 44 and 47 would also work and allow a 19mm washer to fit in the yoke.
If the yokes are maximum 48mm across, the 48mm uni-joint will also work with a washer larger than 19mm.


Hardie Spicer
Edit, look under 'universal joints'.........'identification by part size'
http://www.hardyspicer.com.au/PDF_Fi..._2013-14lr.pdf
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ME 109 screwed with this post 10-07-2014 at 11:41 PM
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Old 10-08-2014, 06:55 AM   #5
H96669
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This is what you probably want....:

http://www.drive-lines.com/elbe/temp...hp?series=ELBE 106

Link may not take you directly to the 106.

Or this from down under:

http://www.munichmotorcycles.com.au/...roducts_id=514

Listed under later models but as far as I know BMW has used the same U-joints from the introduction of the Paralevers and maybe even before that. In any case 89 GS or 2003 K1200RS have the same size U-joints, I have a few too many driveshafts on my shelves, I can compare.

BMW uses Ina-Schaeffler U-joints, the OEMs even have a little casting mark on them that says so.
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Old 10-08-2014, 05:50 PM   #6
mattcfish OP
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Thanks for the help.
So it looks like the
Spicer K5-A766
19mm x 44.4mm
Elbe 106
19mm x 48mm
or
U-Joint Store TUS-62
19mm x 46mm

Will all work
The last is the best priced one. Anyone have experience with them?

mattcfish screwed with this post 10-26-2014 at 05:22 PM
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Old 10-09-2014, 06:56 AM   #7
H96669
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Whatever U-joint you decide to use....could you take pics? I am trying to see what brand the rebuilders use. Hard to tell on my rebuilt driveshafts, no marks of any kind. I may have to go by "similarities".

What I do know is that similar size U-joints are used in the steering columns of some vehicles. The one in my old GM van was pretty darn close in size. I wouldn't use such on a driveshaft.

Try to get the torque specs for the others...Elbe quotes 383 ft/lbs nominal torque.
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Old 10-21-2014, 09:41 PM   #8
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Quote:
Originally Posted by H96669 View Post
Whatever U-joint you decide to use....could you take pics? I am trying to see what brand the rebuilders use. Hard to tell on my rebuilt driveshafts, no marks of any kind. I may have to go by "similarities".

What I do know is that similar size U-joints are used in the steering columns of some vehicles. The one in my old GM van was pretty darn close in size. I wouldn't use such on a driveshaft.

Try to get the torque specs for the others...Elbe quotes 383 ft/lbs nominal torque.
Can't get any info from"The U-Joint Store"
About load rating on their U-Joint.
That sucks, because their unit is half the price of an Elbe which is about half the price of a Spicer. This is a performance bike so probably shouldn't go cheap.
The current joint feels good in every way except that it likes to stick very slightly in the straight forward position.
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Old 10-21-2014, 11:17 PM   #9
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Quote:
Originally Posted by mattcfish View Post
The current joint feels good in every way except that it likes to stick very slightly in the straight forward position.
if no damage has occurred yet .. you can extend life by inject ujoint back full of grease by using a grease needle.

all paralever use non-serviceable ujoints with no zerks provides for maintenance. once original grease goes dry .. game over with ujoint self destructing short afterwards.

there's little to no difference in costs savings by leaving off zerks. BMW simply wanted driveshafts to have a finite life.
one is of course much better off with new ujoints replaced with serviceable zerks. Bruno's does a good job at rebuilding and claims if serviced with new grease every 9k miles.. new ujoints will last lifetime of bike.


_cy_ screwed with this post 10-21-2014 at 11:22 PM
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Old 10-21-2014, 11:49 PM   #10
ME 109
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Quote:
Originally Posted by mattcfish View Post
Can't get any info from"The U-Joint Store"
About load rating on their U-Joint.
That sucks, because their unit is half the price of an Elbe which is about half the price of a Spicer. This is a performance bike so probably shouldn't go cheap.
The current joint feels good in every way except that it likes to stick very slightly in the straight forward position.
Sounds like you have plenty of life left in the uni.
Uni's are overrated too. They don't even need rollers in two of the caps. Here's a dynamic demonstration of such a uni, and a fd with less teeth than Gramps ended up with.
Of course the clutch masks everything, it puts years back on yer bike!

https://www.youtube.com/watch?v=Q61BttshAAc

I think the hardie link way back has info on uni type. I vaquely remember classifications.
'Coarse, I vaguely remember a lot of things, too.
Always know where my key is tho, and whether it works.

Of equal importance when selecting a uni for this job, what is the measurement of the yoke??
The uni caps do not want to extend past the yoke, or a rebated washer would be needed.
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Old 10-22-2014, 02:56 AM   #11
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The trick to a nice repair is the neat removal of the original stakes. The best way to do that would be in a well set up drill press or machine centre or mill, sort of thing.

Or..............in my case Lasted 15 years eh'
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Old 10-22-2014, 10:09 AM   #12
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ME and I do agree every once in a while. A slight notch straight on? From what I can tell that won't hurt a thing. A lot of them go on and on just like that.

Cy and his grease fittings conspiracy theory? It's funny but very little in the auto world still has grease fittings and the stuff is lasting three times longer than it did with them.
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Old 10-22-2014, 07:36 PM   #13
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Originally Posted by supershaft View Post
ME and I do agree every once in a while. A slight notch straight on? From what I can tell that won't hurt a thing. A lot of them go on and on just like that.

Cy and his grease fittings conspiracy theory? It's funny but very little in the auto world still has grease fittings and the stuff is lasting three times longer than it did with them.
OK, three people have told me not to worry about it.
Maybe I'll listen and just put this baby back together and get the big tube swing arm on my bike.
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