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Old 05-16-2011 | 11:49 PM
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DarZeelon
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From: Rosh-HaAyin, ISRAEL
Default RE: TT .46 Pro problem.

ORIGINAL: 1QwkSport2.5r

The JettStream muffler's pressure fitting has a much smaller hole than most of my other engines, but it does provide plenty of pressure to the tank.
The hole in the pressure fitting only transfers pressure to the fuel.
When en engine of this size is running at full-throttle, it only needs to throughput less than 0.4 cc of gas per second, to replace the same volume of fuel drawn into the engine through the carburettor.
So its orifice size is virtually inconsequential to tank pressurization.

Its throughput needs to increase temporarily, during transition; to increase/decrease the tank pressure.
The volume difference is greater, as the tank becomes emptier.


But I have yet to see an engine 'drown' from excessive fuel pressure, after a quick closing of the throttle to idle.
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