Cotton 1928 M25 Blackburne 500 cc ohv



 Cotton  1928   500 cc OHV  Blackburne type “  M 25”   frame# 4375 engine  #  GBA 327


The Glouchester-based Cotton factory was one of  many small manufacturers that used proprietary engines in the years between the first en second world wars. 
But there was something quite special about the Cotton, that made it much more successful than most other small makes: its frame. 
The frame that Frank Willoughby Cotton designed  around 1914  was of triangulated construction, very light and exceptionally strong.  
Cotton was studying law at the time, but after WWI he decided to become  a motorcycle manufacturer. 
In 1922 Cotton entered three machines for the Junior TT; an unknown young Irishman by the name of Stanley Woods rode his Cotton to an impressive 5 th place, despite a number of alarming mishaps during the race such as the machine and rider catching fire during refuelling!
The next year Woods rode again for Cotton and he scored his first of 10 TT victories, being only 19 years old. 
Cotton had proved the very good roadholding and cornering qualities of his bikes and the make was to win many more races. 
Most racing successes were achieved with the fast and reliable Blackburne engines. 
In the years after WWII Cotton left the triangulated frame  principle and scored successes in moto-cross and   road racing.

This sporty 1928  model is  an older restoration.