Bonhams | 16-Oct-2016 | The Autumn Stafford Sale Important Collectors Motorcycles | Venue : Stafford, Staffordshire County Showground
Category : Classic Motorcycles
Lot No. : 214
Year : 1949
Engine Size : -
Chassis No. : # RC3931
Engine No. : # F5AB/2A/6004
No longer available - Sold or withdrawn from sale


Crankcase mating no. 19U
• Rare Vincent-based competition special
• Fully rebuilt engine
• Offered for restoration
Inspired by the success of George Brown's Vincent-based Nero, Derek Parkin, racer and frame builder from West London, built and campaigned his own lightweight frames for Vincent engines in the 1960s. Between 12 and 14 were built for twins, and it is believed just two frames for 500cc units. The other is in regular use in the UK. Like the Egli, the Parkin frame replicates the Manx Norton in rake, trail, and wheelbase but is based around a Vincent headstock.
According to the Vincent special site, Egli-Vincent.net: 'The original prototype was built in 1962 and Derek Parkin piloted the bike himself. Out of ten events up to 1967, Parkin scored six firsts, three seconds and one third place, so his recipe was obviously quite good. The Vincent Owners Club awarded him the Eve Neave Trophy in 1963 for the most outstanding performance during the season by a club member.'
Parkin's bikes featured Norton Roadholder forks, and Norton or Italian Oldani brakes. Bultaco works rider Brian Kemp scored the last ever Vincent national championship race victory on a Parkin-Vincent in 1969. Entered in the Southern 67 Racing Club's Brands Hatch meeting, against a field of younger machines, he finished first and lapped most of the other riders while riding Derek Parkin's own bike.
In 1988, the machine offered here (with a different Comet engine installed) participated in the Classic Manx Grand Prix but did not finish. This particular frame was bought from a long-standing Vincent racer who had helped Parkin build the frames. The headstock on this bike, with its correct factory number, is from a 1949 Rapide, while other parts include a believed Suzuki front brake; Metal Profiles fork legs (no yokes); Norton Commando gearbox; alloy wheel rims; Hagon shock absorbers; and a Vincent T-bar and engine plate. The 1951 Comet engine, with correct mating numbers, has been rebuilt by Ian Hutchinson with a twin-plug head and parts supplied by Dave Holder and Maughan's. Bills and worksheets are included.
There is no V5 document, but a period UK registration should be obtainable from the DVLA using the original Rapide headstock number. Boasting a fully rebuilt engine, this near complete Parkin-Vincent represents a wonderful opportunity to own one of the rarest of Vincent-based motorcycles.