Hi TomADC,
A five-three Triumph Thunderbird is a very nice 'bike..!
My first (and only 'Limey') was a 1944 'BSA' Model M-20 'Single', 500cc Side-Valve.
Ran splendid, daily use for five or six years, never minded Rain...'Lucas' Electrics of course...'Mag-Dyno'...
Not as fast as yours, but, a good, solid, good-looking, reliable 'bike.
I miss how the Girder Front-End would 'hop' if I kept Traction at all when locking up the binders...
Lol...
Oooooops, sorry...thread-drift...