I yesterday acquired a stripped Triumph in a box where it has spent the last twenty years or so. The engine number stamped indicates it is T100 SC. Can anyone tell me what model this is and any other background info that could be of interest. The bike seems to be largely all there, but has got some rust on various bits like the fork tubes. Everything is obviously well used and needs a complete rebuild. cheers time being.
'T100SC' was used by Triumph from the 1962 to 1965 seasons.
'T100' in this case indicates an essentially 500cc (actually, at 69mm x 65.5mm bore x stroke, 490cc), unit construction (engine and gearbox in the same cases); 'S' indicates a single carb.; 'C' indicates 'Competition' style.
The T100SC was primarily a US-market model which, during this era, leaned more towards off-road competition; hence, in general, any 'C'-suffix model (there's also a 650 TR6SC and 200 T20SC) tends to have knobbly tyres, stainless steel mudguards, engine bash plate, folding footrests, etc., etc.
More details, including dating the engine/frame number to a particular season and season-specific changes, can be had from "The Triumph Trophy Bible" by Harry Woolridge, which can be usefully cross-referenced with the same author's "The Triumph Speed Twin & Thunderbird Bible" and J.R. Nelson's "Triumph Tiger 100 & Daytona". The latter book also has a separate supplement that details the number of every major part used on every T100 model - John Nelson was a long-time Triumph employee who ended up as world-wide Service Manager.
#91633 - 05/02/064:08 pmRe: T110 SC model info needed