[ Scotty Greene wrote in 130705 MMDigest:

> ... can I get away with adding external stiffeners, or do I have
> to remove the motor cloth and put the stiffeners inside, as they
> are on a pressure pump?

Scotty,  the correct thing to do is to put stiffeners in the pump.
I don't see them very often on the outside of the pump.

Look at the valves and also the seal around the crankshaft coming
out of the pump.  Make sure that is tight and your volume [air flow]
should come up on the pump.

Tony Marsico - Bayernhof Museum
Pittsburgh, Pennsylvania