Vacuum Wiper motor and SU’s

[squeak]

The FZB updraft carb has a vacuum take off 
for a Lucas vacuum motor.

Has anyone used a Lucas vacuum motor with an SU carb ?
If so where’s the best place to make a takeoff?

Alternatively have a quite rare P&H electric wiper motor, ( I’ve never seen another one)
And think I’ve seen it mounted on a period GE photograph?

Anyone else used a P&H wipermotor?

Course I may not take the car out in the rain. :-) anyway !

Regards 

Bill G

Mmmm, an SU on an A7 suggests a tendency towards "pedal to the metal" driving style ( at least, I have a SU on the chummy and that is how I drive it!!) wherever you take off  for the vacuum wiper is likely to be ineffective as that style of driving tends to eliminate any useful amount of inlet manifold depression. I would fit any competent period electric wiper but, if you insist, I would think that using a similar vacuum take off point on the inlet manifold to the original dangly carb arrangement would be as good, or as bad as anywhere else.

A work around this problem for vacuum wipers was to install a small empty air tank in line between manifold and wiper.