19 Apr 2024, 07:40 [ UTC - 5; DST ]
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Post subject: Re: Why No Oil Quantity Gauge Lycoming & Continental? Posted: 03 Aug 2022, 21:58 |
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Joined: 01/06/08 Posts: 4697 Post Likes: +2703
Aircraft: B55 P2
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On the fuel gauge, it depends. If it suddenly goes to zero, I'm not worried. If I see it start to steadily decrease and I don't have another tank, I'd seriously consider landing. I don't remember ever seeing that failure mode in flight. Username Protected wrote: It could be just as reliable as the lovely fuel qty float or capacitance gauges we've had on all of our trainers.
Raise your hand if you've ever had a fuel qty gauge suddenly show an abnormal reading in flight. Did you land?
Now imagine it's an oil quantity gauge. That's a lot of unnecessary precautionary landings.
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Post subject: Re: Why No Oil Quantity Gauge Lycoming & Continental? Posted: 03 Aug 2022, 22:17 |
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Joined: 03/24/19 Posts: 1241 Post Likes: +1676 Location: Ontario, Canada
Aircraft: Glasair Sportsman
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Subaru vehicles monitor oil quantity and will turn on an idiot light in the instrument panel when the quantity is running low (don't ask for an exact oil level as this varies from car to car). Clearly this technology is "do-able" at relatively low cost and relatively high reliability.
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Post subject: Re: Why No Oil Quantity Gauge Lycoming & Continental? Posted: 08 Aug 2022, 15:33 |
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Joined: 03/28/17 Posts: 6678 Post Likes: +8018 Location: N. California
Aircraft: C-182
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Username Protected wrote: It could be just as reliable as the lovely fuel qty float or capacitance gauges we've had on all of our trainers.
Raise your hand if you've ever had a fuel qty gauge suddenly show an abnormal reading in flight. Did you land?
Now imagine it's an oil quantity gauge. That's a lot of unnecessary precautionary landings. Hopefully no one would base any action on an oil quantity gauge only without confirmation of oil temperature and pressure. That's probably why we don't have oil quantity gauges in addition to temperature and pressure in light planes.
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Post subject: Re: Why No Oil Quantity Gauge Lycoming & Continental? Posted: 08 Aug 2022, 16:05 |
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Joined: 11/22/08 Posts: 2921 Post Likes: +928 Company: USAF Propulsion Laboratory Location: Dayton, OH
Aircraft: PA24, AEST 680, 421
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Username Protected wrote: It could be just as reliable as the lovely fuel qty float or capacitance gauges we've had on all of our trainers.
Raise your hand if you've ever had a fuel qty gauge suddenly show an abnormal reading in flight. Did you land?
Now imagine it's an oil quantity gauge. That's a lot of unnecessary precautionary landings. Hopefully no one would base any action on an oil quantity gauge only without confirmation of oil temperature and pressure. That's probably why we don't oil quantity gauges in addition to temperature and pressure in light planes. HHhhmmmm.....I suspect oil pressure and temperature will be of little use if there is a loss of oil. Oil loss could be caused by excessive consumption or a leak. By the time it gets down to a loss of oil pressure, that's probably way too late for any significant action. I've encountered oil loss several times, never do I recall seeing any indication from a change in either oil temperature or pressure.
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Post subject: Re: Why No Oil Quantity Gauge Lycoming & Continental? Posted: 08 Aug 2022, 17:31 |
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Joined: 11/15/17 Posts: 685 Post Likes: +350 Company: Cessna (retired)
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The time I didn't get the dipstick inserted right on a T210, the windshield acted as a pretty good warning means. It indicated an excessively high amount of oil on it.
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Post subject: Re: Why No Oil Quantity Gauge Lycoming & Continental? Posted: 08 Aug 2022, 17:45 |
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Joined: 11/20/16 Posts: 6461 Post Likes: +7934 Location: Austin, TX area
Aircraft: OPA
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DH Beaver has a dipstick right in the cockpit by the co-pilot's left knee. Can even add oil in flight.
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