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Old 08-09-2018, 09:41 PM   #202
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Join Date: Jan 2018
Location: Tocumwal, NSW, Australia
Posts: 1,158
Default Re: tell a Model A related story

Re the story I wrote on the 5th August.

An explanation on loosing oil from the sump. I explained the oil system some weeks back but for those who missed it here it is again.
The Pratt and Whitney radial engine has a dry sump. Oil collects from the cylinder tops, valves and rockers plus the crank case, in a small sump at the forward and bottom of the cylinders, between cylinders 5 and 6. You'll see this in the picture below. From there it is pumped to the oil tank which is attached to the airframe and that holds about 9 gallons. It was at this collector tank from which I lost the plug and therefore not a great quantity of oil was lost.
You can see a Pratt badge adhered to the collector sump. Engineers and others steal these as they are collector's items.
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