Umm, Tooch? Is your year a typo? My source says it is a 1958. But your says 1949-1950. Your pictured bike is an identical photo as mine, except for the text description.
I think you are correct. So you won this round. What is your offering for us to find?
http://www.motos.online.br.com/pictures/motors/normal/Ariel-FH650-Huntmaster-1958.jpg
Finally!
I've found a motorcycle you need a hint to guess. Doesn't happen very often.
Hint: It is indeed a small German manufacturer. Five hundred cubic centimeters. Engine is made by MAG.
Suzuki Crosscage
You were right...less than thirty seconds.
"The Suzuki Crosscage concept bike from 2007 uses hybrid electric hydrogen fuel cell motor and is now a working prototype.
"
http://cdn.rideapart.com/images/suzuki-crosscage03.jpghttp://images.machinedesign.com/images/archive/72739motorcycle_00000050992.gif
I already posted a bike for someone to guess. It don't run on hydrogen, though.
Just curious...are you on a desktop, laptop, tablet or smartphone? I'm gonna say you are viewing these threads on a phone, 'cuz you miss some posts.
Dave Akhurst Greenfly, a heavily modified XT500 Yamaha, LPG fueled. It makes a lazy 30-odd horsepower and Akhurst figures he gets around 70mpg - compared to roughly 50mpg from a standard late 70s XT. http://www.thebikergene.com/custom-bikes/dave-akhursts-greenfly-the-lpg-powered-custom-motorcycle/
http://www.thebikergene.com/gallery/zen/i.php?a=Greenfly%20LPG&i=Greenfly-01.jpg&w=500&h=
http://www.thebikergene.com/gallery/cache/Greenfly%20LPG/Greenfly-20.jpg_w500.jpg
That is a circa 1934 "The Field" steam powered motorcycle.
http://www.steamcar.net/field-2/field-2-24.jpghttp://www.steamcarassociation.org.uk/Lightbox2/Field/Field011full.jpg