Small and perfectly formed
After so much positive feedback to the feature on Pete Parnham’s lovely little CR110 in the last issue, I had to scour the archive to reveal more detail on the little gem. Thanks to the development of the factory riders in 1962 the customer CR110 had an amazing specification, 8.5bhp at 13,500rpm and four tiny valves controlled by double valve springs. The big end and main bearings were needle roller and the crank-pin was integral with the drive side flywheel and main shaft. The gearbox boasted eight gears, amazing for the period with all gears in constant mesh with an alternative linkage to allow swapping the lever from the left to the right. The clutch was hydraulically operated by a column of oil through the hollow main shaft rather than a pushrod. Incredibly, the high revving power plant runs on one pint of oil! One inch Keihin carbs feed the engine, sparked by a single 10mm spark plug. In 1962 the CR110 cost a pricey £330, only around £100 pounds less that than a Manx Norton! But the jewel-like machines were definitely the tool to have in 50cc racing and went on to dominate. Today they fetch an equally spicy price and are much sought after by collectors.