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Rhyl and District Model Flying Club

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Saturday 7/7/18

2018-07-07, 21:07 by Gary M Jones

I was at the field today between 14:00 & 15:00 all on my own , good flying too. There is a dead sheep along the fence line towards the gate from the pits, I saw the farmer so reported this to her. I hope no one had plans for a BBQ Smile .

Farmer …

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Petrol Engine Pop off pressure

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Petrol Engine Pop off pressure Empty Petrol Engine Pop off pressure

Post by Rich 2012-06-29, 08:10

Just read this small article posted on the IMAC UK forum by Mal Green

http://www.aerocorsair.com/id28.htm
Rich
Rich
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Post by Brian Colclough 2012-06-29, 08:46

Rich I don't know whether you remember but I played around with pop-off pressure a few years back. I made up an adapter for my cooling system pressure tester but in the end found it to be very none critical so gave up on it. I think it was when I was having trouble with the ZDZ 50, which I eventually sold to N.F.J. having fitted an updated Walbro that cured the issues I was having.

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Post by Guest 2012-06-29, 09:40

Good find
The link also has an "inventions" section. This gives guidance for setting many other carburettors including walbro. Useful information.

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Post by Rich 2012-06-29, 10:07

Never did think the pop of pressure was a very important aspect in the real world.

Might just try a couple of carbs to see what the release at.
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Post by Brian Colclough 2012-06-29, 10:19

If my old memories right the data given for the pressure is quite a broad spread and so long as you're within that spread you'll not see any significant performance differences.

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