Gents,
Some pictures of my research today.
Measuring muffler pressure without (2) and with (3) check valve in the connection between the muffler and the tank.
I do need the values to know the most backwards possible position of the tank when use a MVVS in the Simla.
I also have to do these measurements with the ST G60 on the benche.
I do not like to use crankcase pressure, much to high in my opinion.
Of course I also did fly today, but the results are only visible on bottom side.(4)

Cees