Thanks again to you all for your swift replies.
Good point about tandem systems. Daffy was first registered August '78, which
should make her a tandem brake system, but in fact she is single cylinder
(which is apparently up to '77). There have been a couple of other things
that don't tie up with her registration date (don't know build date, haven't
asked BMIH) or chassis number, such as non-waxstat HS4 carbs, and fixed fan
pulley not viscous coupling, but I guess any of these could have been modified
by a DPO.
Anyway, the point is, she's single cylinder system. Which is less safe, but
does make my re-build job easier!
Richard and Daffy
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