500cc conversion, 1962 Triumph 350cc 3TA Bathtub

500cc Conversion,
1962 Triumph 350cc 3TA Bathtub

Frame no. H26290
Engine no. 3TA H26290

Triumph re-entered the 350cc class in 1957 with the introduction of the Twenty One, its arrival ushering in Triumph’s unitary construction era. Mr. Edward Turner recognized the need for a model that bridged the gap between 2 and 4 wheels, so the new model was readily distinguishable by its Shell Blue metallic finish and ‘bathtub’ rear enclosure to keep the rider clean. With just 18.5bhp on tap, Triumph’s smallest twin lacked the urgent acceleration of its larger brethren, but nevertheless was a capable tourer good for around 80mph while delivering excellent fuel economy. ‘One of the swiftest standard British-made 350cc roadsters tested by Motor Cycling, the Triumph Twenty One combines an untiring zest for high-speed cruising with safe handling and a remarkably economical fuel consumption,’ it was reported.

Although well received in the old world American dealers and motorcyclists had mixed feelings about these bikes and the “Tins” were frequently removed and substituted with regular fenders and headlight buckets which means that  a complete, original, bathtub Triumph is a pretty rare commodity these days.  

The example of Triumph’s super-stylish 3TA offered here was purchased by the previous owner, more or less as you see it. With very minimal use under his ownership, the bike passed to Glory Motorwork’s principal, Justin Kell. Glory MW is a shop specializing in European motorcycles, servicing, restoring, and building ‘specials’ for Hollywood clientele. The bike was again, on static display for the most part, with a handful of miles being added. To ready the bike for sale, it received a full re-commissioning and service. As such, it is offered in equally as good condition mechaically as it is cosmetically. The engine starts easily, more often than not on the first or 2nd kick, idles well and has good, responsive power.  The bike shifts well through all gears with a good clutch.  Brakes, and suspension all work perfectly, as do the electrical systems.  

The restoration has held up very well and presents nicely. Paint finish, frame and cycle parts and all chrome is in excellent condition.

This is an excellent example of a piece of British motorcycling iconic history, offered in excellent condition, in need of nothing and ready to show or ride anywhere.


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