Auto air pumps work in reverse. Just change the input to
get vacuum, Virg
On 1/25/2016 4:39 PM, ol' weirdo via KRnet wrote:
> Don't you fellows remember when the windshield wipers were driven by
> a vacuum motor connected to the intake manifold? Open the throttle and go
> blind. Not a good idea for an airplane.
>
> Bill Weir
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