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ChipB727 Certificates/Ratings/Crew Stations: 1. "RE: Inverted fuel and oil systems" 05-27-03, 18:27z  It's a weight threaded to the end of a hose with holes drrilled in all directions to pick-up fuel. Check Aircraft Spruce online catalog. It should be there. Not sure how to post a picture, but I can email you one if you wish. As for the oil sump on the Extra it is a dry sump and uses a 3-way oil valve to pull oil from the sump or the top of the engine (inverted flight) to the oil pump. During normal flight, the weighted ball valve at the top of the oil separator is open, allowing blowby gasses from the engine crankcase to be vented from the breather port, through the breather tee, to the top of the oil separator, and out through the overboard breather line. The top ball valve of the oil valve is closed, and the bottom ball valve is open, allowing oil to flow from the sump out through the strainer fitting, to the oil valve, back through the sump fitting to the oil pump and out to engine lubrication points. When the aircraft is inverted, engine oil falls to the top of the crankcase. The weighted ball valve in the oil separator closes, preventing overboard loss of oil through the top of the oil separator. Blow-by gasses from the engine crankcase are vented from the sump to the bottom of the oil separator and out through the overboard breather line. The top ball valve of the oil valve is open, and the bottom ball valve is closed, allowing oil to flow out from the breather port, through the breather tee, to the oil valve, through the sump fitting and the sump screen, to the oil pump and out to engine lubrication points. Any oil in lines which fails to return to the sump during the transition between normal and inverted flight drains into the oil separator. This oil then returns to the sump from the bottom of the oil separator during periods of normal flight. Best Regards, Chip Bonner Remove | Alert Edit | Reply | Reply With Quote | Top

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Subject      Author      Message Date     ID      Inverted fuel and oil systems    Ben_Chiu       05-23-03              RE: Inverted fuel and oil systems    ChipB727       05-27-03       1            RE: Inverted fuel and oil systems    TomParsons       05-27-03       2            RE: Inverted fuel and oil systems    Ben_Chiu       05-28-03       3                 RE: Inverted fuel and oil systems    djpacro       05-29-03       4                      RE: Inverted fuel and oil systems    Ben_Chiu       06-01-03       5                      RE: Inverted fuel and oil systems    ChipB727       07-02-03       6

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