Re: OMI 3-compartment insulated tank is too big?
Steve and Barb Hile
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Yes, there were two heads creating the air gap. Look closely at the tank and you will see the double rows of rivets marking the location of the interior heads.
Of course, this is not possible if the car has an external jacket.
From: main@RealSTMFC.groups.io [mailto:main@RealSTMFC.groups.io] On Behalf Of greg snook
With the domed heads, would there be one on each compartment, creating an air void between the compartments? I have always assumed, without any reason, that there was one head in the tank, curved in one direction or the other, but that doesn't seem like it would create the volume loss that you describe.