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Ted Robinson

@dave bushell wrote:

Hi Lewis.
I’ve always understood that the term Pigrim “Pump” is a mis-nomer, and it is in fact, no more than a metering device. The supply of oil still depends on crankcase depression to draw the oil into the engine. I may be wrong and no doubt some-one more knowlegible than I will put me right! So converting a pump to the pure dripper version should make no difference. The oil in the petrol is a “belt and braces” move.

Hi, Dave, A Pilgrim Pump is definately a Pump. I had a chat to David Brierley some years ago and he told me he had put a pressure gauge on one and if I remember correctly he got a reading of 30psi plus.
When I worked at the BTH in the 1950s we had large compressors fitted with Pilgrim Duplex Pumps, there was an oil feed that went to the top of the cylinder which I can remember breaking and it spewed oil all down the side in spits. The difference with a dripper you will get the same number of drips regardless of speed whereas with a pump it will be variable with engine speed. There is nothing wrong with a Pilgrim just the wrong application on a Scott running at engine speed.
Best wishes Ted.