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BORUTOV MODELARSKI FORUM - PROSTOLETEČI MODELI F1-ABCH
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Bogdan
Stara kljuka
Pridružen/-a: 22.10. 2008, 06:32
Prispevkov: 4330
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 Objavljeno: 22 Avg 2017 06:08 Naslov sporočila: Koristen nasvet o Li-Po baterijah avtorja Black Magica |
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Koristen nasvet o Li-Po baterijah avtorja Black Magica:
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Love your battery but replace when it fails to perform!
From: Magic Timers
At the recent World Champs there was an incident where an F1A model failed to bunt. The Sportsman feared that he had failed to turn the timer on, however when the retrieval crew got to the model they found it had D/T’d.
In talking with the sportsman he remarked that when charging the battery it had only come up to 3.8 volts per cell (a LiPo Battery) rather than the normal 4.2 but seeing the nominal operating voltage for a LiPo is 3.7 it should be OK.
Not good. The low voltage indicates a failing battery and should have been replaced right away. The LiPo batteries a so much better than the NIMH and NICAD we used in the past that we forget that they do last forever.
What probably happened was at the moment of launch of the F1A the force on the servo at the pitch up caused the battery voltage to drop to a level where both the servo and timer stopped working, it turned them off. Freed of the load the power came up and the imer powered up and the timer was in tow position. Because the model was off the line the hook was not being pulled forward so after flyaway time out lapsed the model D/T’d.
The battery looks even a little bad it probably is – replace it! One check to read your battery’s voltage at the end of a flying session and get a history of what it should typically be so you can know if you see any falling off. While you cannot simulate easily the conditions of a F1A launch on the bench nor towing for half an hour you can “fly a contest” on the bench including leaving the model during the time it would take you to get to the model. If you used the timer’s buzzer you need to let that run so you might have to do this test out in the garage as not to annoy the rest of the house hold. |
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tone vidensek
Stara kljuka
Pridružen/-a: 19.07. 2010, 14:47
Prispevkov: 192
Kraj: Dragomelj 122
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| Objavljeno: 05 Okt 2017 07:58 Naslov sporočila: Koristen nasvet o lipo baterijah... |
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Mnogo dobrih in poučnih nasvetov o Lipo celicah in njihovem vzdrževanju najdete tudi na forumu modelarji.com pod "akomulatorji in polnilci"  |
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Bogdan
Stara kljuka
Pridružen/-a: 22.10. 2008, 06:32
Prispevkov: 4330
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| Nazaj na vrh |
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tone vidensek
Stara kljuka
Pridružen/-a: 19.07. 2010, 14:47
Prispevkov: 192
Kraj: Dragomelj 122
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| Objavljeno: 05 Okt 2017 14:39 Naslov sporočila: Koristen nasvet o lipo baterijah... |
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Točno tu Bogdan.Sam sem pričel prebirati te prispevke ko sem kako lipo celico vrgel v koš.  |
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Ne, ne moreš dodajati novih tem v tem forumu
Ne, ne moreš odgovarjati na teme v tem forumu
Ne, ne moreš urejati svojih prispevkov v tem forumu
Ne, ne moreš brisati svojih prispevkov v tem forumu
Ne ne moreš glasovati v anketi v tem forumu
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