Quick Stats

1948-58 489cc OHC twin 22/25hp, 80/85mph, 60mpg, 450/420lbs

What to Expect

Advanced design for its day let down by poor cooling to the rear cylinder, excessive vibration, torque reaction and poor quality of materials. S8 was lighter, better handling and more powerful with the engine rubber mounted. Only works when ridden in a relaxed and mild manner but there is a good motorcycle trying to get out; some have upgraded lubrication systems which gives the engine an easier time.