Got This White "Snow Boss" through one of my scrap metal associates. I figured it would be a Typical double shaft engine setup and drive. However, I was surprised to see a single shaft setup. What was Really interesting, is the drive chain and sprocket moves laterally with the friction wheel. Also, the Gauge of steel was comparable to an Ariens 10000 series. Check out the Gearbox as well. Interesting Setup IMHO. Saved the Engine, a Good HM80 w/generator and headlight.