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#21
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Can I fly it at night?
"Robert M. Gary" wrote in message oups.com... No, "or which has not subsequently been certified with such a system installed" 91.215(b) (3) Notwithstanding paragraph (b)(2) of this section, any aircraft which^M was not originally certificated with an engine-driven electrical system or^M which has not subsequently been certified with such a system installed,^M Added on after the fact is not "subsequently been certified with such a system." That is from the local FSDO. |
#22
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Can I fly it at night?
True, but a modern alternator will produce power at lower
rpm which means less drag. Also it should have lower frontal area and internal cooling drag. Alternators don't need heavy cast iron housings and w/o a commutator, should be electrically quieter. Ag planes often use a wind driven pump, so getting a proper prop isn't difficult, just tell the prop shop how many watts and what a/s, etc. -- James H. Macklin ATP,CFI,A&P -- The people think the Constitution protects their rights; But government sees it as an obstacle to be overcome. some support http://www.usdoj.gov/olc/secondamendment2.htm See http://www.fija.org/ more about your rights and duties. "Morgans" wrote in message ... | | "Jim Macklin" wrote | | You can drive the alternator with a propeller just like the | old generator, it just makes power with less drag. | | You do need to use a special propeller, that is designed for converting | thrust into power, instead of power into thrust. The more curved surface | needs to be on the backside of the airstream, unlike a regular prop. | | For a generator, you can use a 12 volt motor with magnets in it, and a | voltage regulator added to it. | -- | Jim in NC | | |
#23
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Can I fly it at night?
Someone mentioned the LED anti-collision light, I know Whelen offers LED nav lights as well. Perhaps a call to them to find out what the draw would be for anti-collision and the 3 nav lights to make him legal and safe, then see what the different scenarios would be (i.e. a fully charged, 15 pound gel cell battery might run those lights reliably for 3 hours). The light retro would be a little costly, but it would be a simple system to maintain, versus introducing an alternator or generator, and a belt or propellor or whatever else you might need to run the thing. |
#24
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Can I fly it at night?
Jim Macklin wrote:
True, but a modern alternator will produce power at lower rpm which means less drag. Also it should have lower frontal area and internal cooling drag. Alternators don't need heavy cast iron housings and w/o a commutator, should be electrically quieter. Ag planes often use a wind driven pump, so getting a proper prop isn't difficult, just tell the prop shop how many watts and what a/s, etc. This one say 6 amps (yep, not much, but a lot more than nothing) at 85mph, weighs 5 lbs and is 5" diameter. Seven hundred bucks though... http://www.aircraftspruce.com/catalo...s/turboalt.php Let's see... a lot more expensive than another battery, but a lot lighter too. |
#25
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Can I fly it at night?
for standard aircraft bulbs, figure about 1-1/2 amp each for tip and tail
lights. And a 12 volt 15 AH gell cell beats a generator - for simplicity and reliability... Richard Michael Ware wrote: Someone mentioned the LED anti-collision light, I know Whelen offers LED nav lights as well. Perhaps a call to them to find out what the draw would be for anti-collision and the 3 nav lights to make him legal and safe, then see what the different scenarios would be (i.e. a fully charged, 15 pound gel cell battery might run those lights reliably for 3 hours). The light retro would be a little costly, but it would be a simple system to maintain, versus introducing an alternator or generator, and a belt or propellor or whatever else you might need to run the thing. |
#26
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Can I fly it at night?
"karel" wrote in message ... Excuse me if I am in a bad mood tonight but this "answer" does not answer any of O/P's questions. I didn't realize responses without "answers" were prohibited. Whether something is worth the trouble is up to him to judge, your opinion on the matter is irrelevant. The relevancy of my opinion with regard to his project is up to him to judge. Your opinion on the relevancy of my opinion with regard to his project is irrelevant. When he asked what is required for short local flights, who needs wonder if he'll be content with that tomorrow? Him. Actually, can _you_ tell what you'll be content with tomorrow? Yes. And if you recommend him to buy another plane, are you going to pay for it? No. Again, my apologies if this sounds rude, it is not meant so. You don't sound rude, you just sound stupid. Only I would request all and sundry to either bring useable answers, or keep silence. Request denied. For myself I don't have the slightest knowledge on these matters, so I keep my trap shut. But you didn't keep your trap shut. If you don't have the slightest knowledge on these matters how can you judge what is a useful response? |
#27
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Can I fly it at night?
"Montblack" wrote in message ... BTW, IIRC, SPM flys something similar to the OP's '41 Chief. I fly a 1946 Aeronca 7AC Champion, but not at night. |
#28
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Can I fly it at night?
"ET" wrote in message ... The airplane may have had an external wind-driven generator originally, you could restore that with a modern alternator at the cost of a 1 or 2 mph. But with a "modern alternator" you now have an engine driven electrical system, and all of the requirements that go along with it... (transponder within mode c veil). Not if the "modern alternator" is used in a restoration of the external wind-driven generator. But that wouldn't be a restoration, that would be a conversion. |
#29
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Can I fly it at night?
"Jim Macklin" wrote in message news:zoXuf.40449$QW2.13845@dukeread08... You can drive the alternator with a propeller just like the old generator, it just makes power with less drag. Maybe you can, maybe you can't. This is a certificated airplane, not a homebuilt. |
#30
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Can I fly it at night?
Field approval. No doubt there is an approved wind
generator from the 1940s. The conversion should be a simple matter, even on a certificated airplane. -- James H. Macklin ATP,CFI,A&P "Steven P. McNicoll" wrote in message nk.net... | | "Jim Macklin" wrote in message | news:zoXuf.40449$QW2.13845@dukeread08... | | You can drive the alternator with a propeller just like the | old generator, it just makes power with less drag. | | | Maybe you can, maybe you can't. This is a certificated airplane, not a | homebuilt. | | |
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