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Home✈️Aircraft🚁Helicoptere-AlignOther › 11.1 4000 mah
11-10-2005 09:13 PM  14 years ago
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lightningrc

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UK

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11.1 4000 mah
Bought one from a Hongkong ebay dealer , but its at a guess about twice the weight of my 11,1 1800mah lipo packs
I thought it would be the same size and weight like the Sub C cells etc , are lipos not like this.
Ive zip tied it to the underframe of my heli and balanced the C/G , its charging at the moment but I will be shocked if it flies ok
Any views ???

Cheers Steven
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11-10-2005 09:25 PM  14 years ago
Berenger81

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Freiburg - Germany

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Same Curiosity
Hi there, I have been wondering about the exact same thing, have a Polyquest 4000 mAh 3S LiPo from a plane and doesn't seem to be THAT heavy, unfortunately haven't had time to give it a try, It could be really awesome to obtain 20+ minutes flight times (I mean hover and FFF at most, not even thinking about going 3D with that weight).

The drawback I have found is the added strain to the hardware, mechanically for the added weight and thermically, given the extended exposition of motor and esc to heat. An advantage could be the lowered discharge rate of the battery which could lead to a bit more efficient operation.

Has anybody ever tried something like this? It would be really interesting to find out that it is OK to fly like this, the beginner hover sessions could be a lot more fruitful with longer flight times.
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11-10-2005 10:10 PM  14 years ago
lightningrc

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UK

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Not sure how charged the lipo was has I only give it 10 minutes and it going to take atleast 2 hours with my charger but it would not lift off the floor in my kitchen
Will get her on charge and report back tomorrow night but it dont look good.
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11-10-2005 10:18 PM  14 years ago
jack726

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Cerritos California

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Bad Idea
Bad idea to charge a lipo while attached to a heli. Someone was going to sell me a converted Raptor. He charged it with the cells attached. Melted the battery and the heli.

Most people charge lipos in a fire proof container.
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11-10-2005 10:55 PM  14 years ago
lightningrc

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UK

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may be he used the wrong charger or to high a voltage , my lipo charger seems pretty fail safe.
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11-11-2005 12:49 AM  14 years ago
Helifool

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Rochester New York

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lightningrc,

If you are actually charging your pack while its in your heli just dont do it. Even if your charger seems reliable you could have a problem. Dont be lazy, its just not worth the risk.
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11-11-2005 06:54 AM  14 years ago
lightningrc

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UK

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OK these lipos are new to me so I will from now on remove the battery , I think I will also change where I charge it .
Ive got my loft converted , my Rappy .90 is up there plus £2000 worth of vintage tamiyas
Thanks for putting me straight

Cheers Steven
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