I was just going to ask about this- using the exhaust as an eductor to

run

the vacuum instruments- this was suggested to me by Tony Livic.  If it

works,

it would be reliable and lightweight. No moving parts.
Brian Trubee
Redmond, Wa

Archie wrote:

Just one, Brian.
The check valve, but I have not seen one fail yet.
As additional failsafe, one in each pipe.
Archie

 
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