04-01-2020, 06:10 PM
Hi Chris,
Happy New Year.
The Nippy three bearing pressure fed engine used the standard oil pump.
The engine I had a play with was pretty original even down to the pistons and brass pin caps.
I did not compare the spring with a standard one but I suspect that the spring was either packed or a stronger one was fitted to give 30 PSI.
I too have a Paul Bonewell pump waiting to got into a pressure fed two bearing Nippy engine.
Happy New Year.
The Nippy three bearing pressure fed engine used the standard oil pump.
The engine I had a play with was pretty original even down to the pistons and brass pin caps.
I did not compare the spring with a standard one but I suspect that the spring was either packed or a stronger one was fitted to give 30 PSI.
I too have a Paul Bonewell pump waiting to got into a pressure fed two bearing Nippy engine.