another beautiful virago









and an OMG, i never wanted a b-king until now!








supercharged 500 single








and... OMFG! i would love it. look at the welds! how beautiful is that

 

1936 DKW ex Works Supercharged 2-stroke




Winning bid:US $132,300.00 :icon_gulp:
Other Makes : DKW S'CHARGED RACER in Other Makes | eBay Motorcycles

 

that thing is beautiful. great addition

 

I'm curious as to how they supercharged this, as two-strokes are by nature 'self-supercharging'. When the valve opens to let the air into the crank case, the air gets charged when the crank rotates and the piston comes down.

 

Don`t see no charger either...

 

I did the googling.





from The Vintagent: 'ROSIE' THE DKW SS350
These racers also have a Ladepumpe under the the engine, which is a separate cylinder (and crankshaft, on the Works machines) used to compress air into the crankcase - a kind of supercharger for two-strokes. Thus, while this motorcycle is technically a twin-cylinder two stroke, mechanically it is a 5-piston machine - hardly a 'simple two-stroke'. The SS350 produced around 34hp, and used magnesium for the crankcases, gearbox case, and brake hubs, and was what DKW offered to the public for racing. According to Wolfgang Schneider, this complicated multi-piston two-stroke engine is only competitive for racing when the extra 'push' of the Ladepumpe piston is used.

 

Sounds like they actually just tweaked the intrinsic 'self supercharging' feature of a two-stroke just a bit, then marketed it as 'supercharged'.