1951 AJS 7R 350cc Racing Motorcycle  Frame no. 1426 Engine no. 50/7R 838
Lot 366
1951 AJS 7R 350cc Racing Motorcycle Frame no. 1426 Engine no. 50/7R 838
Sold for £16,100 (US$ 27,045) inc. premium
Lot Details
1951 AJS 7R 350cc Racing Motorcycle
Frame no. 1426
Engine no. 50/7R 838
With its oversize fuel tank and short, satin-chromed fork shrouds, this AJS 7R bears a striking resemblance to the one on which Bob McIntyre won the Isle of Man Junior TT and came second in the Senior in 1952. Dismantled in the 1970s, the machine was purchased two years ago together with just about everything needed to rebuild it, including many 'new old stock' (NOS) parts accumulated over the years.

Checked for straightness by the previous owner, the frame was re-sprayed by FD Motorcycles and fitted with NOS head bearings while the forks were rebuilt. (It should be noted that the paint now obscures the shallow frame number stamping). The 'Jampot' shock absorbers were fitted with new gas internals by Rock Shocks.

The engine has been rebuilt by Stuart Tonge, a front runner in the Lansdowne Cup and builder of many of the other competitors' machines, who commented on its extraordinarily original condition. Exceptionally well preserved, with very little corrosion and no welding, the original crankcases were assembled around a rebuilt-by-Alpha crankshaft and repainted gold. NOS parts fitted include the piston and rings, cylinder head, valves and guides, Renold racing cam chain and all nuts, bolts and studs. A NOS camshaft was used (original available) while the engine had already been updated with roller followers, a later improvement retro-fitted to many older engines. Specialist Dave Lindsley rebuilt the magnesium-bodied magneto.

The large-capacity, through-bolted fuel tank had its bottom cut off and any dents knocked out, and was then repainted by FD, as was the oil tank. The wheels were rebuilt by Essex Wheels using NOS spokes and nipples, and the original brakes machined to size and assembled with new racing linings by specialist Dick Hunt. Dick Smith rebuilt the gearbox with new bronze bushes, while the NOS clutch basket contains new Surflex friction plates. Other NOS parts include the footrests, brake lever, Renold primary/final drive chains and Amal throttle. New parts (the originals being missing) include the rev counter bracket and handlebars. As one would expect, the control and rev counter cables have been renewed together with all the various rubber mounts.

Completed earlier this year and in presented wonderful condition, this exceptional 7R is offered with spare exhaust pipes, shortened megaphone, slip-on silencer, alternative sprockets, reprinted parts book, tappet tools, Jack Emmott's 7R tuning book and a few other spares.
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Contacts
  1. Ben Walker
    Specialist - Motorcycles
    Bonhams
    Work
    101 New Bond Street
    London, W1S 1SR
    United Kingdom
    Work +44 20 8963 2819
    FaxFax: +44 20 8963 2801