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Discussion in 'GS Boxers' started by GS Addict, Feb 24, 2015.
Out of stock, no longer available ?
From the bottom of the page:
DUE TO THE RECENT LAWSUIT BROUGHT BY BMW AGAINST MAGURA, ONCE OUR CURRENT STOCK OF MAGURA PRODUCTS IS GONE WE WILL NO LONGER BE ABLE TO SELL ANY BMW SPECIFIC MAGURA PRODUCTS.
So, once the current stock is gone, what recourse do BMW owners have regarding a replacement slave assembly should one be needed?
OE from BMW only
And BTW the current BB stock is gone.
What's the lawsuit all about?
No have 1150-- what wears on those slaves? Seal and piston or just seals? Seems like aftermarket could step in to make those and an o-ring source found. Over-worn cylinders could be sleeved as well.
It's the same deal w/ the Magura 1100 master cylinders that are dealer-only now-- clever machinists and folks who refuse to pay full BMW retail can make this happen.
Not sure but I suspect it is for Magura selling direct and not thru BMW.
From what I understand if a part is specifically developed/made for BMW, it may only be sold to them.
I ran into this twice trying to buy direct.
First time for an AMP connector, the second for the little INA bearing on the slave piston.
The failure starts by the little bearing going dry and the piston spinning.
The bore scores and the rest is history.
The bearing is not available for public purchase, I have sourced and been told only BMW may purchase.
The seals are available - Data Cata has them IIRC.
This leads to my suggestion of lubing these every 40k or so. I have done mine and is the original @ 170k miles
I wonder if that little bearing could be made of Nylatron?
if the seal is available, and the bore is smooth, they could be rebuilt indefinitely right?
The small diameter of the pushrod end would exert tremendous point pressure on the nylatron. Also the pushrod is spinning all the time, up to 7500 rpm!
Melting might occur?
That is possible, I have never worked on an 1150, so I am not fully aware of the design of the slave cylinder.
plug some numbers into this and see if it might be possible?
The OD of the rod is about 3/8", there is a 1/4" locating dimple on the end.
Not much surface area to work with.
ahh ok, it might be a no go then.
VW 020 transmissions used very similar setup to the BMW with the throwout bearing that looked like this. Clutch was not hydraulic and the lever would press on the flat part. You can see where the pushrod goes, but the bearing is way bigger than BMW's
Engines were similar power to the BMW oilhead.
But then we would have to redesign the whole slave cylinder to fit, and there is no room.
BMW just wanted to get by with minimum effort in transitioning to the hydraulic clutch. I have never seen a throwout bearing that small on anything else other than BMW. Maybe it would be more reliable long term to design cable setup for it. I am thinking lot of these will be alive in 20-30 years. BMW's have tendency to stick around.
Just throwing stuff out there, dont hurt me.
Bingo! We do stock the Dan Cata seal kits for the slave cylinders but as mentioned if the bearing is toast you are out of luck. If you lube the crap out of the bearing from the start and re-lube it every so often then they will last and the seal kit can be used to repair leaks if they occur.
Trouble is, Magura is a firm that makes accessories for PUSHBIKES.
The BMW 1150 hydro clutch designer in Berlin opted for a pushbike slave cylinder because he moaned about lack of space at the chosen location hung on the back of the gearbox top lid - unable to install a beefier item, quoth he - and now of course all new-range R models have the WET Jap-style clutch.
So the Krauts can charge us what the hell they like for a replacement, since like all their component suppliers, it's more than the supplier's business is worth to sell an item to anybody else than Berlin.
What lovely people the Quandts are, don't you think ? And forget not that Grandma Quandt whose family still entirely owns the combine, was Josef Goebbel's girl friend. Tell that to the younger generation today and they don't know what the heck you're going on about...:eek1
ok.... so whats the source & P/N for the Dan Cata seal kits for the slave cylinders.
when I changed mine out a couple years ago it was still working OK but weeping. I can rebuild that one & have a spare. pretty sure a clever guy could figure out how to rig another bearing too.
Half way down the page
Edit: Sorry Mike, I missed your post.
We also stock them in the US: http://www.beemerboneyard.com/21522335061rk.html