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schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6419

I've begun to think about my next project, maybe something to do in retirement. I have bikes from the 70s, 60s, and 50s. I was thinking maybe I should look towards something from the 40s. I don't want a single from the late 40s, so it would seem that I would be considering a 41 or 42 R12...dual carb, or maybe the single carb is the way to go...less horsepower though. What are the chances of finding such a bike? I can't imagine there are a lot of them still around. Vech in Mississippi has a 1939 R12 for sale...painted in the desert brown, although I would prefer a black one.

I know it will be expensive, but just wondered what people thought about the chances of finding something like that. I like the idea of the pressed steel frame, side valve, and 750cc...all of which I don't have at this point.

Thanks...

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

Bruce Frey
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VBMWMO #6316
Texas Hill Country, USA
Joined: 10/27/2006
Posts: 574
I think R12s are cool

I think R12s are cool bikes.....while they were made in large numbers, finding a good one is the problem. More than any other model, R12 were used and abused. They were the workhorses of WWII and many of the survivors were blacksmithed back together and worked to death again afterwards in eastern Europe.

I consider myself really lucky to have found an unmolested triple match twin carb version with few replacement parts that had been well cared for in western Europe. Even so, the rebuild of the engine and trans (which it did need) cost a bloody fortune. The good news is that there are a lot of replacement parts for them available today.

In my 15 years of playing with old BMW, I have seen two real twin carb R12 (one is in my garage). You will see a lot of R12 with a pair of Russian or Chinese (M72 or CJ) carbs because it is easier to do than to sort out a Sum. The original Fischer Amal twin carbs qualify as unobtainium as do the battery ignitions.

If you are after an R12, finding one with a good rebuild history is logical thing to do, unless, of course, you have the masochistic rebuild gene that many on this site seem to have;-)

Good luck!

Bruce

Darryl.Richman
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VBMWMO #6285
Surf City, USA (Santa Cruz, CA)
Joined: 10/27/2006
Posts: 2185
I couldn't agree more with

I couldn't agree more with Bruce. My own experience, and nearly every other one I've heard or read means that you will find "surprises" in your R12 from stem to stern that will challenge your mechanical and networking skills.

BTW, Maine "Ted" Smith currently has "The World's Best R12", has restored it to running shape and it's for sale. I know that he took photos of everything he did.

If you don't get that bike, I have a pair of Chinese carbs for you (that I could never make run very well on my R12). Smile

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VintageSalesand...
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VBMWMO #7368
Corona, CA
Joined: 03/24/2008
Posts: 295
R12

Hi,

Once I finish the 1951 R67 restoration I am nearly done with, I am starting the restoration of 3 (three) R12's to be done concurrently - One is mine (1935 original twin carb . batt/coil ignition model, the others are 1940/1 era - one to be a civilian version with art deco sheet metal, the other is and will remain a Luftwaffe Grey military model.

I have been inside my motor and trans enough to know that "hard parts" are pricey, but rubber, and other misc, parts are not bad at all. Wolfgang Reichenberger and a handful of other suppliers in Germany and Poland make so many of the required parts that you could almost build one from their combined catalogs.

I will end up using a set of period BING's on mine because finding a good set of "operational" AMAL-Fischer's is very tough - and from what I'm told, they don't perform as well either. I do have the unobtainium Bosch B245RS108 Generator (2 actually) and I am in the process of making replacement gears for them as it seems they are almost all worn out.

That said, unless your R12 comes with the generator and the AMAL's you should expect to spend about $6,000 more for the pleasure of having them. I don't think you will miss the 2 hp increase that is claimed, but the $6k is another story. I do have spare parts - and will have more as I get through this project - let me know if I can help.

Cheers.

Jeff

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6419
Thanks for the input. I

Thanks for the input. I really haven't begun to look...that I suppose is the first step, making contact with potential bikes/parts/baskets and then seeing that make sense. I suspect I'll have to put on non-original or non BMW parts to get it going and then look to find these replacements as time goes by. But first, I need to spot a potential machine.

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

VintageSalesand...
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VBMWMO #7368
Corona, CA
Joined: 03/24/2008
Posts: 295
R12

There is a red R12 Sidecar rig on German eBay right now - you might have to get permission to bid, and then import it.

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6419
I looked at the German

I looked at the German listing...it appears to be a '38 model based upon the description. From my limited knowledge, many parts seemed to be missing and non BMW parts were substituted. Of course, as has been mentioned, that's going to be par for the course. One of the pictures shows an engine number? I couldn't find that numbers associated with an R12 wasn't even close. The headstock plate was not clear enough to see exactly what the full numbers were.

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

VintageSalesand...
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VBMWMO #7368
Corona, CA
Joined: 03/24/2008
Posts: 295
Jobe

Depending on your level of patience and your budget, you could wait for a "good" one - but be prepared to wait a long while / or pay a good bit for it. I think, so long as the frame is sound, and the engine case halves match, the rest can be had from stashes of spares and the after market.

Jeff

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6419
I was thinking about calling

I was thinking about calling John Landstrom at Blue Moon Cycle in Georgia. Confused

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

spider rust
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Joined: 04/07/2014
Posts: 73
Good luck with your R12 hunt,

Good luck with your R12 hunt, you'll need it. I own one which I am restoring, its typical of its provenance and military history, well used then abused. It all comes down to budget and how fussy you are for originality.
I think its very important to restore to original specs, for future custodians. And worth the cost of doing the work properly.
But its starting the project with the best you can buy, pref restored because it will prob cost you as much by the time you've finished.
It took me 13yrs to rebuild an R51.

DFoote
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VBMWMO #8655
Joined: 01/21/2014
Posts: 40
In Ft Worth

I was at Perry's in Ft Worth last week and he has a beautiful 36 R12 sport model on the showroom floor if you want to see one up close.

Don in Dallas

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Don Foote Dallas TX
58 R69 59 R50 63 R50/2
71 Triumph T100C

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6419
I'll try to keep that in

I'll try to keep that in mind...thanks!

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

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