This page contains the info I have gathered on BSA Slopers.

Catalogues
MotorCycling
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.

Service sheets
- Mid season changes
- Adjustment of taper roller wheel bearings
- The fitting of 1927, 1928 and 1929 flywheels into new crankcases on inclined engine models

Social Media
There is a members only facebook group dedicated to BSA Slopers:
https://www.facebook.com/groups/291748071284351/
