TRIUMPH SPEED TWIN Development History the Pre-Unit & Unit 500cc twin H Woolridge Motorcycles Bike

TRIUMPH SPEED TWIN ; Development History of the Pre-Unit & Unit construction 500cc Twin;
Harry Woolridge ; Softcover ;
FIRST  Published ;  A Foulis Motorcycling Book ;  Haynes Publishing Group ;  1989 ; ISBN 0 85429 722 7 ; No. of Pages ; 127 ;
Condition ;   ; Very good  ;  Some very light shelf - wear ;  Very good tight binding ;  no writing added - no browning to the paper .
Also listed by me as a separate item ; THE STORY OF TRIUMPH MOTOR CYCLES  ; HARRY LOUIS and BOB CURRIE  .

Also see another item listed by me ; A History of the Worlds motorcycles Richard Hough 

( motor bike motorbike Motor cycle ; motor cycle engine design multi cylinder design detailed specifications  mechanic mechanical engineering )