[T2] speeded-up vid of 'T1' engine

[Robert Mann]

<https://www.youtube.com/watch?v=S3cMPJjuj2w&t=220s>

         Your viewer program probably has a Settings on e.g cog-wheel icon
to slow playback speed to 0.5 or 0.25

 Bus content: some buses e.g mine have engines v similar to this Beetle
engine.

 BTW those external pushrod tunnels, similar to Triumph etc, contrast with
e.g Hopwood's Norton Dominator twin, pushrod tunnels simply cast-in holes
in the barrel.  I reckon the protection from damage by e.g rocks, and the
abolition of leaks at top & bottom, outweigh the extra cooling which will
occur in the extl pushrod tubes to the extent that oil circulates in them.
  Mann's first theorem of History of Technology states: the history of
technology is not merely sprinkled with but dominated by blunders.   Extl
pushrod tunnels are at worst v minor blunders, no?

Robt Mann
'73 1600dp Devon