« Reply #74 on: November 17, 2013, 10:32:00 am »
The Trackmaster is a very light looking frame Firko. It doesn't look capable of holding a big pommy lump even though we know they do. I guess there would have to be some serious head stays made up?
As you can see from the above photo of a T140 Bonneville frame, the Trackmaster is based off the Triumph Bonneville concept and it's been around in the same basic design since Ray Hemsley started producing them in 1969. The Americans mostly used Triumph geometry for their aftermarket frames while the Brits (Metisse, Cheney) essentially used the BSA Gold Star frame for their layout inspiration. The Trackmaster is pretty light all right but I don't think it'll need any head stay support more than what's on it. My frame is made for an XS650 Yamaha as you can see from the head mount bracket mounting tabs and lack of 'oil in frame' provisions on the top rail....the Triumph doesn't have a head stay but I may use it if I can find somewhere to attach it to the Triumph engine. I'll use an oil tank on mine. The Trackmaster is essentially
the flat track frame that started the whole lightweight aftermarket frame concept and you'll find that nearly all of the available period frames have the same, or very similar geometry even though their designs might be very different. Even though the Trackmaster was made for flat track, many were used for desert racing back when the Triumph ruled the desert. I'm not sure if I'll build mine for flat track or motocross......or as a street tracker. It's a couple of years away yet.
Below: the proper Triumph Trackmaster frame showing 'oil in frame' top frame rail.
« Last Edit: November 17, 2013, 12:15:37 pm by firko »
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