Colin Seeley

Colin Seeley (born January 2, 1936 in Crayford, Kent, England ) is a former English motorcycle sidecar racer who later became a successful motorcycle designer, constructor and retailer of accessories.^[1] In 1992 he was involved in running the Norton Rotary race team.^[2]

Racing background

Seeley began his motorcycle career as an apprentice for Vincent Motorcycles.^[1] He raced in the British and world championship sidecar competitions between 1961 and 1967.^[1] He raced his own-design machines with Matchless G50 500cc engines and for the UK large-capacity class Matchless 650cc G12 CSR^[1] followed by Norton 650cc Dominator engines prepared by Paul Dunstall,^[3] but for Grands Prix the size limit was 500cc, meaning the only reliable, competitive engine was the BMW RS54 Rennsport.^[4]

Abandoning the tall-engine configuration of the single-cylinder Matchless G50 outfit, Seeley campaigned the flat-twin BMW installed in a lower-line outfit called FCS-BMW^[5](Fath-Camathias Special). His best competitive results were first place at the 1964 Dutch TT and second place finishes in the sidecar competitions at the 1964 Isle of Man TT and the 1966 French Grand Prix at Clermont-Ferrand.^[6][7] Seeley was one of the first to wear coloured racing leathers, using red suits together with passenger Roy Lindsay during the 1967 season, a trend started in 1966 by Derek Minter.^[8]

Seeley motorcycles

Development

After retiring from competition, Seeley concentrated his efforts on designing and constructing Seeley-framed racing motorcycles, initially powered by AJS and Matchless motorcycle engines.

After experimentation during the winter months, the first prototype frame - powered by a Matchless G50 single-cylinder 500cc engine - was built from Reynolds '531' tubing in early 1966, and was 9 lbs lighter than a standard G50 frame.^[9] The prototype had Manx Norton front forks with an eight-inch dual-sided brake by Eddie Robinson, which Seeley later retailed separately^[10] and Manx Norton rear forks (swinging arm, swingarm) with Manx conical rear hub.^[9]

Production frames would have a swinging arm made by Seeley, and customers could specify four, five or six-speed gearboxes.^[9]

Derek Minter tested the bike at a race circuit local to both himself and Colin Seeley – Brands Hatch – describing it as "the best steering solo he'd ever tried" and the front brake as better than the Oldani normally used on his Manx Nortons.^[9]

When the AMC motorcycle firm closed their in-house race shops in 1963 due to financial problems, although spares were still available, the actual engines were then obsolete.^[11]

There were no manufacturers producing new 350cc and 500cc race machines for purchase,^[12] excepting a 350cc Aermacchi,^[13] prompting fears over sustainability of the existing AMC race engines and leading some tuners to turn to developing road engines, such as Triumph Tiger 100 ('Monard' Triton by Geoff Monty and Allen Dudley-Ward and Brian Bennett's twin-carb all-Triumph).^[14][15] Although these were not expected to be fully competitive against the OHC AMC race engines, they were a cheaper clubman's starter option.

Seeley in late 1966 purchased all the engine tooling and spares for their racing AJS, Matchless and Norton motorcycle brands.^[16] The availability of AJS 7R and Matchless G50 engines was ensured, and Seeley did not have to consider manufacturing the AJS and Matchless cycle parts.^[17] The Manx Norton spares aspect^[18] was sold-on to former sidecar racer John Tickle in 1969,^[19] changing hands twice again by 1994.^[20]

Production

Production began in late July 1966. David Dixon track-tested the 350cc AJS 7R-engined version for Motor Cycle albeit hampered by the chassis being fitted for smaller Derek Minter and running-in a new engine, he reported the bike - with a six-speed Schafleitner gearbox to be the smoothest 7R he'd ridden.^[21] Dixon also reported that there was two gearbox options - four-speed or six-speed at extra cost.^[21]

Motor Cycle staff writer David Dixon reported in November 1966 that Seeley was "hoping to step-up the output of his Seeley 349 cc AJSs and 549 cc Matchlesses for 1967. These will, as in the past, be sold as complete machines ready to race." Seeley was also appointed as a Reynolds 531 frame tubing stockist.^[18]

Seeley soon was devising frames for other engines. The 1967 URS 500cc GP four cylinder was ridden by John Blanchard, but the Seeley-frame aspect of the project (provided by Colin Seeley Race Developments) ran into problems with personalities and by the sudden use of a non-Seeley front-brake from rival Rickman, resulting in Seeley confiscating his rolling chassis less the brake, caused the Fath (URS) team to use a Rickman Metisse frame for 1968 onwards.^[22] Colin Seeley sold the frame privately, which Blanchard later bought, and using a Fath/URS engine was able to create a successful Grand Prix machine campaigned by German Karl Hoppe^[23]

In 1968 Seeley developed road-race frames for the 250 cc QUB two-stroke twin-cylinder,^[24] followed by the 500 cc QUB two-stroke single-cylinder engines, both conceived by Dr. Gordon Blair at Queen's University Belfast.^[25]

Other engines were Yamaha, creating the Yamsel^[26] so effectively raced by John Cooper and later Norton twins. Seeley went on to develop in 1971 a roadster based on the Matchless G50 engine called the Seeley Condor.

During the late 1960s and early 1970s when almost all the major motorcycle manufacturers had pulled out of Grand Prix racing, the Seeley-designed chassis became the race bike of choice for privateer racers of the era.^[1] John Cooper won the 500cc class at the 1968 North West 200, while Brian Ball finished second to Giacomo Agostini in the Senior TT at the 1968 Isle of Man TT, both riders on a Seeley-Matchless.^[27][28] At the 1969 North West 200, John Blanchard and Brian Steenson placed first and second in the 500 class aboard Seeley-designed motorcycles.^[27] In the 1969 Isle of Man TT, Seeley placed four of his machines in the top ten in the Senior TT race with third, fourth, sixth and seventh place finishes.^[29] His best result as a constructor came in 1970 when Tommy Robb rode one of his machines to a fourth place finish in the 500cc world championship.^[30] Seeley later used other Japanese engines in his chassis, most notably using a Hi-Tac Suzuki T500 engine for Barry Sheene in 1971.^[31] Sheene used the bike to win the British national championship and declared it the best-handling motorcycle he had ever ridden.^[31]

His designs proved so successful in competition that he earned a reputation as one of the best motorcycle frame designers in the industry.^[1] In the 1970s, Seeley moved to automobile racing when Bernie Ecclestone hired him as joint Managing Director of Motor Racing Developments to work on Brabham racing car production, and in 1986 with the Brabham Formula One team.^[1][2]

Road bikes and others

Following on from the Condor roadster, during the mid-1970s Seeley - under the name Colin Seeley International - produced a special, lightweight, single-seat sporting road bike with Honda 750cc SOHC engine and front forks, featuring his own tanks, seat and exhausts.^[2][32]

In 1977 Seeley produced for Honda a limited-production of 150 'Phil Read Replica' TT Formula 1 race-styled roadsters based on the CB750F2 with accessories by Seeley in Honda Britain colours of blue and red,^[2][33] followed by a 1979 updated version called CB750SS in white with red or blue flashes.^[34]

Again in 1979 he produced a Seeley Honda TL200 trials bike, a smaller version of the 360cc works bike ridden by Rob Shepherd.^[2] All machines were hand-built and with limited production volumes have become collectors' items

Other product lines were developed. Seeley fairings were instantly recognisable by twin headlights, as were megaphone-shape replacement silencers with long reverse-cones

As vintage racing increased in popularity, Seeley's motorcycles experienced a resurgence with a victory at the 1988 Manx Grand Prix.^[35] Since then, Seeley machines have won twelve times in vintage class racing at the Manx Grand Prix.^[36]

References

Persondata
Name	Seeley, Colin
Alternative names
Short description	British motorcycle racer
Date of birth	2 January 1936
Place of birth	Crayford, England
Date of death
Place of death