2s lipo in parallel on humingbird v3

[LipolyGone]

Hi guys I have a humingbird fp V3 that I fly at the indoor meeting at Shepton Mallet.
I've only got the 1 birdseed battery for it but have several kokam 2s1p 360mah packs, now I was wondering if I can parallel these packs up to make a 2s2p pack with a capacity of 420mah has anyone tried this? I fI can do this what is the best way to do it?
Thanks in Advance
Martin

[Jamez]

What you will have to do with packs that size is make them into 3s2p packs (7.4 volts is not enough for the Humming bird to fly with I have tried it before), what you will end up with is 2 groups of 3 cells in series, then connect the 2 groups in parrellel to give a you 11.1v 720 mah pack.

[LipolyGone]

what happens if you fly with to low a voltage on it then mate?
I have tried one 7.4v pack & it flies realy lite but tail didnt hold to well.
Infact tail doesnt hold to well even on the birdseed battery after a few minuets it gets very difficult to hold tail straight the gyro certainly doesnt hold it on its own.
martin

[Jamez]

Mine just sort of hung around in ground effect and didn't have any tail power/ climb out at all, however putting an 11.1v lipo on it (which I have since killed by leaving it plugged in and flattening it completely) made it a whole different animal (rapid climb out's, loads of tail power, I even changed to a shorter tail blade as i use to use the elite one's) Only thing was everything get's a bit warm, as it was a 1050 pack, it would fly for 20 mins on it so i split it to 2 ten min flights with a 15 min rest.

[MartinM]

Hi, I have the Twister FP and use the RX pack from my T Rex 600. This is just 2 cell 1200mah @ 10c and I find it Ok. just use in doors for my nose in training and find it lasts me for just over 15 mins.

If you have them, give it a try !!!

Martin

[Jamez]

OK, maybe it was just me then, but you should see them go on 11.1v, you wouldn't want to go back.....

[MartinM]

Yes, I bet it did go on 3 cells!!

As said the 7.4 v 2 cell is just right for my winter night indoor hovering training. If your outside and it a little wind the head speed will be a bit low. For that I use the Twister CP but most crashes end with it needing parts, the FP just gets up and flies again !!

Martin

[Jamez]

Just a thought, i have a Kan 7 cell 650 nimh pack in the flower shape of a Bird seed (redundent now), Hardly been used, if you are interested...