Seeley 850 Commando Mark 3 Racing Motorcycle

• Purchased as a 'basket case' in 2016
• Roger Titchmarsh frame
• Paraded at various Classic events

Colin Seeley's lightweight, rigid chassis proved an effective means of prolonging the competitiveness of British four-stroke singles into the late 1960s. The Mark 3 version (introduced in 1969) dispensed with the conventional lower duplex loop, a move that allowed privateers to fit the Norton Commando engine for use in Formula 750 and open-class racing, as well as the more-usual Matchless G50 or AJS 7R. Several of these Commando-engined variants were fitted with additional down-tubes to support the weightier twin-cylinder engine.

This example was acquired in 2016 as a 'basket case'. The engine is from an original 1974 850 Commando, one of the very last kickstart models. The Combat-specification motor boasts race camshafts, new 32mm Amal Concentric Mark 1 carburettors, Boyer electronic ignition, and lots of lightened and polished internal components. The original four-speed AMC gearbox has been replaced with the latest five-speed magnesium-cased racing 'box from Mick Hemmings, while the transmission arrangements are completed by a Bob Newby clutch and belt primary drive.

The Seeley Mark 3 frame was built in 2015 by Roger Titchmarsh ,who is licensed by Colin Seeley to produce the frames today using the original jigs. The seat, fairing and fuel tank are all taken from the original templates. The front forks are Ceriani, fitted with 230mm Ceriani double-sided four-leading brake,while the rear brake is a Triumph conical unit converted to Manx looks and fitted with improved cam levers. The exhaust system is to Neil Brailsford's handmade custom design with removable baffles for use at unrestricted race events. The Seeley weighs 152.5kg (335.5lbs) wet.

Since its restoration's completion the Seeley has been paraded at various Classic events including Donington Park, Cadwell Park, Brands Hatch, Snetterton, Mallory Park and the Isle of Man TT 'Lap of Honour' in 2018. In 2020 the seat unit was signed by the late Colin Seeley at a Norton Owners' Club charity day at Redhill (the signature is now partially worn away). Offered with a CRMC Registration Certificate.