It appears you're interested in specifications for the Ariel VHA 500. This Allround model is powered by a All-alloy engine Single cylinder, four-stroke engine with 497.00 ccm (30.33 cubic inches) of actual displacement before 6.0:1 compression. Fueling is metered via Carburettor. Amal monoblock allowing this machine to produce its 24.00 HP (17.5 kW) horsepower and torque. According to our records engine heat of the Ariel VHA 500 is moderated by Air. You'll need to get familiar with the 4-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 3.00-20 and the rear is 3.25-19 . The entire package is supported by the frame, Semi double cradle. 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 Ariel VHA 500 was launched in 1953, 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.