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Old 08-12-2006, 07:29 AM   #1
mr moto OP
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ural bmw ?

anyone know if you can fit an old bmw airhead engine into a ural sidecar rig ? and if so can you still get it set up for a driven sidecar wheel as well as reverse ? or are the latest ural engines getting more reliable than the older engines ?
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Old 08-12-2006, 12:07 PM   #2
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I would say, uh, yeah....

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Old 08-12-2006, 12:50 PM   #3
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thank,s now that looks more like it, any details on this conversion ?
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Old 08-13-2006, 03:11 PM   #4
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Sorry, no details, but if you e-mail me offline I'll send your contact information on to the guy who did it.

My HD with the S&S 96-incher...love this machine...

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Old 08-14-2006, 03:01 PM   #5
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Quote:
Originally Posted by mr moto
anyone know if you can fit an old bmw airhead engine into a ural sidecar rig ? and if so can you still get it set up for a driven sidecar wheel as well as reverse ? or are the latest ural engines getting more reliable than the older engines ?
Id say yes, and yes because Chinise metalurgy is getting way better than it was as they buy a bunch of iron from Japan. I finally broke down and bought a chineese shotgun, a dead nuts knock off of a Model 870 tactical. It is just as good as the original, and I use it in three gun competition, and it has never failed to cycle. Even the parts interchange opn the guns...way cool. Id love to have a converted Ural to BMW motor! that would be sweet....they are very stylish!
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Old 08-14-2006, 03:17 PM   #6
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Urals are Russian, not Chinese.
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Old 08-14-2006, 03:22 PM   #7
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Originally Posted by Flash412
Urals are Russian, not Chinese.
Oh, what are the chineese ones that look just like that? They are usually black and have a sidecar too...maybe Im thinking of the Urals and not knowing they were Russian...Are the Urals the ones that have about 800ccs and only about 21 hp? If so that is what Im thinking about....
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Old 08-15-2006, 12:07 AM   #8
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Ural

Quote:
Originally Posted by mr moto
anyone know if you can fit an old bmw airhead engine into a ural sidecar rig ? and if so can you still get it set up for a driven sidecar wheel as well as reverse ? or are the latest ural engines getting more reliable than the older engines ?

The newer Urals are pretty good bikes...I have a Gear Up that hasn't given me a bit of trouble, other than being tinkered w/a bit - which I enjoy...It's my understanding that you will lose the reverse w/a BMW engine...The 2 wheel drive will still work though...I've been told that a Guzzi engine would mate-up pretty closely to the Ural Trans, and be able to keep the reverse - I'm not sure though?
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Old 08-15-2006, 06:19 AM   #9
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I think you can buy themthrough Wal-Mart

chinese ones are

http://www.chang-jiang.com/bmw/welcome.html
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Old 08-15-2006, 11:23 AM   #10
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Originally Posted by elmoreman
there ya go! The venerable Chang-Jiang!!! I knew there was a Chi version. On the quality of Chi made metal goods, the guns are great, the bikes are getting better. There are some pitbikes made there now that are so good there is a race serries for them and allot of guys are SMing the little buggers and racing them too. I saw one I may buy for my daughter, actually me but it is a 100cc, has USD front forks, a piggyback rear shock, and a 100cc re-popped Honda ATC motor in it, is about 2/3 scale, or midibike, and is $800.00, and uses all the original Honda ATC110 motor parts. Not bad at all for a new bike.
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Old 08-15-2006, 12:53 PM   #11
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Quote:
Originally Posted by Sniper X
Oh, what are the chineese ones that look just like that? They are usually black and have a sidecar too...maybe Im thinking of the Urals and not knowing they were Russian...Are the Urals the ones that have about 800ccs and only about 21 hp? If so that is what Im thinking about....
The Chinese ones are Chang Jiang. The Chang Jiang are flat head, pre-war BMW design. Urals are valve-in-head, wartime BMW design. BIG DIFFERENCE. Bigger than the difference between pushrods and overhead cams.
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Old 08-19-2006, 12:12 AM   #12
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Here ya go...from Beijing...



Lots more on my website.
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Old 08-23-2006, 09:08 AM   #13
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Quote:
Originally Posted by mr moto
anyone know if you can fit an old bmw airhead engine into a ural sidecar rig ? and if so can you still get it set up for a driven sidecar wheel as well as reverse ? or are the latest ural engines getting more reliable than the older engines ?
Yes, there's a guy in NC named Rochard Winter that specializes in putting BMW airhead motors in Urals/Dneprs.

Got to http://www.russianiron.com and look him up. His handle there is "Bural".

The new 750cc motors are better than the older 650cc models.
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Old 08-23-2006, 10:38 AM   #14
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Originally Posted by gatling
Here ya go...from Beijing...



Lots more on my website.
Uh, he's got a wrench in his hand, and a new Cheng Jing..not a good testament to their "reliability". Oh, and they have 500CCs and 12 HP don't they?
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Old 04-27-2007, 01:36 AM   #15
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URAL/BMW conversion

I have a 2003 ural patrol currently undergoing a BMW R75/6 engine transplant. I will retain the sidecar optional drive but will not have reverse.
I may be biased, but in my opinion there is no such thing as a reliable ural engine. Mine gave way by instantly locking up the rear drive at 60mph, almost into oncoming traffic with two bulldogs in the sidecar. On inspection I found I had wrongly assumed a seized piston/s, transmission seizure or a seized final drive. None of these had occured, the right connecting/conrod had broken clean in half jamming the end still connected to the crankshaft into the engine case causing an 84 yard skid (paced it off). The main bearing to the crankshaft was not seized. It appears just a faulty forging of the connecting rod. Along with many reports of catastrophic failure of a multitude of components ie. gear driven alternators, I elected to go with the BMW engine transplant which I am doing myself.
Close to completion, will post photos when done. Should be a phenomenol bike if it works, will have to watch the increased performance with the old brakes. The ural motor only had 4600 km of gentle driving when it failed.
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