It appears you're interested in specifications for the DKW SB 500A. This Allround model is powered by a Combined two 247cc cylinders on a single block Twin, two-stroke engine with 494.00 ccm (30.14 cubic inches) of actual displacement before 5.7:1 compression. Fueling is metered via Carburettor. Bing allowing this machine to produce its horsepower and torque. According to our records engine heat of the DKW SB 500A is moderated by Liquid. You'll need to get familiar with the transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 3.50-19 and the rear is 3.50-19 . The entire package is supported by the frame, . We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Expanding brake (drum brake) front brakes and Expanding brake (drum brake) rear brakes. The DKW SB 500A was launched in 1937, and we're happy to know (or assume) you've got one in your garage. To help you keep your ride in tip-top shape, consider purchasing an owner or service manual.