Why does each Plane or Helo run on a different battery voltage? - HeliFreak
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Old 01-19-2009, 12:16 PM   #1 (permalink)
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Default Why does each Plane or Helo run on a different battery voltage?

Just getting started on planes and was hoping to use some of the batteries I already have plenty of.

Blade CX2 = 7.4 volts

Blade CP = 9.6 volts

Trex 450 = 11.1 volts

Will probably get the Firebird Freedom as anything that takes 11.1 volts (T-28 Trojan) will probable get destroyed in the first 10 minutes

Of course the Freedom Flyer needs 8.4 volts

http://www.hobbytown.com/Products/RC...ProdID=HBZ7000

What would happen if I ran 9.6 or even 11.1 in it?

Smoke the ESC, the motor or can we fudge a little?

Thanks guys

Mel
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Old 01-19-2009, 07:15 PM   #2 (permalink)
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Blade CP will run on 11.1 volts.

7.2 volts = 6 cell NiCd or NiMN
7.4 volts = 2 cell lipo
8.4 volts = 7 cell NiCd or NiMH
9.6 volts = 8 cell NiCd or NiMH
11.1 volts = 3 cell lipo
14.8 volts = 4 cell lipo

Most anything that runs on 9.6 will run on 11.1. At wosrt you might need the next size smaller prop.
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Blade CP "Pro", Trex 450SE, PiccoZ, Quick of Japan EP8v2 EX, Hurricane 550, Hurricane 200, JR Vibe 50, Blade mCX, Bergen Intrepid Gasser, Pantera 50, Blade mSR, Novus CP
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Old 01-20-2009, 10:49 PM   #3 (permalink)
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Thanks Pinecone,

I bought the AeroBird Swift, it's 8.4 volts says it can also use 9.6 which my Blade CP also uses.

Maybe I'll try 11.1 ....

I learn a lot from your posts, thank you

Mel
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Old 01-21-2009, 10:17 AM   #4 (permalink)
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8.4 to 11.1 is a BIG jump and may burn out the motor.

Also, you have to watch the max voltage rating of the ESC.
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Terry
AMA#47402, IRCHA # 3395
Blade CP "Pro", Trex 450SE, PiccoZ, Quick of Japan EP8v2 EX, Hurricane 550, Hurricane 200, JR Vibe 50, Blade mCX, Bergen Intrepid Gasser, Pantera 50, Blade mSR, Novus CP
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Old 01-21-2009, 03:02 PM   #5 (permalink)
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OK, you talked me out of it
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Old 01-24-2009, 10:20 PM   #6 (permalink)
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And if it's nihm that is factory wouldn't using a lipo be unsafe due to the dif in low voltage cut-off?
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Old 01-25-2009, 02:37 PM   #7 (permalink)
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You would have to fly by timer.
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Terry
AMA#47402, IRCHA # 3395
Blade CP "Pro", Trex 450SE, PiccoZ, Quick of Japan EP8v2 EX, Hurricane 550, Hurricane 200, JR Vibe 50, Blade mCX, Bergen Intrepid Gasser, Pantera 50, Blade mSR, Novus CP
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