BMW U-joint spiders

I've got a modified '88 BMW airhead paralever driveshaft
with circlip retained, zerk fitted spiders that read

"Germany INA f-200698.1 GHJ"

About 48mm+ long with a bearing OD of 19mm.

Anybody able to suggest a source for these buggers ?

Not in a big hurry, but would like to have this info for
future reference. INA is the bearing company I believe.
Contemplating a possible DIY replacement.

Thanks

 

Aside from the fact that WW1 was initiated by a Serbian nationalist attack
on Austro-Hungary, your grasp of history is impeccable!

 

Except that the Germans' reaction involves less stones.

--
"Outback" Jon - KC2BNE

http://folding.stanford.edu - got folding? Team 32

2006 ZG1000A Concours "Blueline" COG# 7385 CDA# 0157

 

Heh, they just drop the offender off in Hoehenfel's and let the wild
hogs deal with it. If you make it out alive you are considered
innocent and sin free. ;^)

 

This isn't quite right. The system is that aftermarket parts have to
be approved by the inspectorate, TUV. Their testing is very stringent
and expensive, and for small accessory companies, it isn't worth the
hassle or expense.

But if you gain TUV approval, that tells the rest of Europe that
you've cracked the big one, and your stuff is good.

 

I found a driveshaft rebuilder who says he can also sell
me the part.

http://www.hendersenprecision.com/indian_moto/bmw_products.html

He says roughly $65 parts cost for the spiders alone.

His $450 drivshaft rebuild involves tack welding extra
rings on the ends of the yokes for a circlipl channel,
replacement of the OEM spiders with the same Zerk
fitted one that I was trying to source and replacement of
the center shock coupling with a new one, your choice
of stiffness.

I talked to the owner on the phone for a while and he tells
me that my driveshaft is in incredibly good shape for
the kind of milage it's racked up. Since I'm pretty busy
replacing the final drive, I think I'll let it go for another
season, but I definitely like this shop.

He also claims he had absolutely no part in starting
either WWI or WWII, though I cannot personally verify
this.

 

Actually, there are some "sheddies" in Germany making some
really nice aftermarket high tech stuff for the bike, but you're
correct that they're working outside the established supply chain.

If you're in the orthodox chain, the idea of somebody marketing a
wierd top gear with one less tooth that mates with a stock gear by
using
bizarre gear tooth curves is probably horrifying beyond belief.

Cranking out strange and horrifying aftermarket parts from an backyard
machine shop may be a sort of Gemanic equivalent of sticking it to
the man.

 

<sigh> might as well do it while you are in there...that's how I tend
to work. Saves time and effort not to mention money in the long run.

 

I think I'll hold off for a year. I do about 10,000-15,000
miles a year and usually plan an anual pulldown to
lube U-joints and clutch splines. Right now, I just want
to get back on the road while the weather's still good.

Might not hurt though to have the spiders stashed away
and waiting. What's an optimal sized hammer for bashing
this kind of delicate stuff ?

 

How much can you lift?

 

The driveshaft was done in '97. I bought the bike in 2000
and put about 100,000 miles on it since. No real complaint
about the driveshaft but the clutch splines are a PITA.

How well does that belt hold up in dirt and gravel ?

 

Still you got my point right?

 

Right. And it's going to bug me a little bit right up until
I actually swap the spiders. And bug me more than a
little bit if it blows up before then.

 

Why, you are missing out on great scenery and interesting roads.

 

Similar terrain except in germany. I knew a SFC that got treed by a
couple of sows with piglets there. It's a BIG training area in germany.

 

You might like to take a look here

http://www.wirthwein-motoren.de/index.php?function=cms_show&id=59

 

Here is one that I have actually bought raceing parts from.

http://www.motoren-israel.com/

 

Side car wtih deployable pontoons? That ought to mitigate swamp issuse.

 

Probably a good thing not to ride gravel
with a belt drive bike. If it weren't for that,
I'd be seriously interested in belt drive.

 

Never dealt with motoren-israel though I've heard
of them. I have bought from Siebenrock and Motobins.
Lots of good stuff out there on the internet. With
Siebenrock, the computer translated correspondence
back and forth was pretty entertaining.