Thank you for your suggestions..
In the meantime I punched Shuttleworth Snap into Yahoo and came up with some interesting results, including a number of actually built and active machines dotted round the country.

One of these is <A HREF="http://www.members.lycos.co.uk/leeaustin/shuttleworth">www.members.lycos.co.uk/leeaustin/shuttleworth</A>
Look out breakers, here I come.

Might I point out an error in the New George Frormby Stamps publicity literature..
George did not win on the Snap....for that was down the cliffs at Port Jack...No, he won on the works Rainbow..

Also I feel that as a George Formby fan I would like to correct the information given out by radio, TV and video..

He did NOT crash at Ballacraine....It were another rider who the commentator THOUGHT was George but corrected his statement in time, in good Radio TT fashion.