Re: Frame for frame
Posted by John on May 5, 2021, 12:02 pm, in reply to "Frame for frame"
Bill Nicholson - BSA's ace trials rider had been working with McCanless brothers and developed his own duplex frame in 1951. Early versions of the frame were pressed into service for the British Army ISDT with designs drawn up by Bernard Knight. I was not however a BSA production frame, not that is until Nicholson took it to the managing director James Leek. Once adopted it became available first for export machines followed by the home market shortly after. |
Both frames show a number of similarities, for example the use off twin saddle tubes with the swinging arm being supported at it's outer ends unlike most frames of the time having a single saddle tube with the swinging arm being supported at it's center. Many swinging arm frames were little more that modified versions of the previous spring or ridged type, With the MaCandles brothers figuring in the ancestry of both frame it's not surprising that they are in many way alike.