? Measuring vacuum

[Ron Nossaman]

>Does anyone know right off the top of their heads the amount(s) of vacuum 
>needed to run an old player piano?
>
>Players are not my forte, but I was talked into looking at one for a friend.  
>I just received my vacuum measuring gauge recently and haven't even used it 
>yet.
>
>Any response would most likely prove helpful.  Thank-you.
>
>Dave Streit


>From as low as five inches (water) and very low CFM for a well rebuilt one,
to all the air in the world proving insufficient for a dead one.
Realistically, if it won't play dependably on 10-12 inches, it's dead. The
volume of air used, cubic feet per minute (CFM) is as important as vacuum
level because if the stack is leaking badly enough, you can move a huge
volume of air through it, pumping like a demon, without producing much vacuum.

Players are nearly as treacherous as politics for the uninitiated. If you
know of a local tech who knows players, I'd recommend hiring him to look at
it with you.

Ron N