Mon Feb 27, 2023 12:31 pm
We are getting so close to completion I can taste it!
First, I found that there was no way to successfully silence the siren with the projector on. There was too much air exchange from inside the donut through the gap in the intake, that no amount of pillows or cardboard could seal it off. So off went the projector. I then duct taped a exact fit piece of cardboard over the stator. This effectively silenced the siren to a point where the VF4 is louder than the siren itself.
I was then able to tune the governor linkage to give a steady RPM at close to 3000rpm. There is still a little bit of surging going on, but it is not terribly noticeable in the tone of the siren itself. One disadvantage of the Stromberg carb compared to the later Zenith, is that it does not have a high speed adjustment for the jet. It is a fixed orifice.
I will leave the projector off until the throttle solenoid is installed and adjusted properly.
I also got the air cleaner fully assembled and filled with oil. It sure looks great.
The right house cover has also been test fitted. I will be making up the stencils soon for MOBIL DIRECTO SIREN, as all the early Milwaukee ones had.
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Jerry
Owner of former Wisconsin Dells/Lyndon Station Decot Model 12 (10/15 port)
Owner of the world's only fully operational Mobil Directo BN52G