This page contains the info I have gathered on BSA Slopers.
Bernal Osborne wrote a 2 piece article on early Slopers in MotorCycling in 1955. Below is a link to this publication, It is also available for downloading.
- Mid season changes
- Adjustment of taper roller wheel bearings
- The fitting of 1927, 1928 and 1929 flywheels into new crankcases on inclined engine models
There is a members only facebook group dedicated to BSA Slopers: