YD-A as discovered

Here is the frame of YD-A frame number YD21 as it was found. It can be seen that a fairing bracket has been welded onto the headstock as per the 1961 Factory YX24/ RR250 and Yellow Tanker models. These were first seen in the US in Feb '61 when Yamaha brought over Ito & Sunako to ride in the Daytona GP. This bike also has engine mounts added from the same model, showing that the bike had been adapted and raced by a during this period and this work must by someone with considerable Yamaha experience and availability to spares, eg Sonny Angel.

The headstock shows YD-A stamped into it. Note, the original grey paint is clearly visible under 2 layers of black paint.

 Frame number YD21 is stamped onto the frame downtube.