Lot details Registration No: N/A Frame No: T1-155 Engine No: D6-483 cc: 250 MOT Expiry Date: N/A
The introduction of a revised sporting twin by Yamaha during 1964 in the form of the YDS3 also prompted the release of the third variant of the increasingly successful TD1 production racer. As with the previous variants the new models shared the same crankcases (although in the case of the racer the "Autolube" oil pump was absent, the space being blanked off by a plate) . The TD1B , as the new model was typed, initially appeared to be similar to the proceeding TD1A sharing the same tank and seat unit, although on later production models these items were replaced with a new fuel tank and seat unit of more modern appearance, however, certain less visible areas benefitted from Yamaha's ongoing development. The clutch became a special racing unit although it remained on the end of the crankshaft, partially addressing a weakness of the previous models, the rear shock absorbers were improved and the forks underwent another redesign. A new set of expansion chambers with a more pronounced "peashooter" tailpipe were fitted which resulted in a more pronounced power band and higher revs.
The example offered has formed part of a museum collection in Japan and is presented in unrestored condition. An engine dating from 1966 is fitted and the original carburettor, float chambers and rear shock absorbers accompany the machine.
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