miskin

hi just been given these Li-ion 3 Cell 1400mah +charger will they be ok to put in my hummingbird everything is stock it came with a 370 gold motor my other 1 had a silver motor in it ??

im going to get li-poly batts but just wanted to know if they would be ok untill i get paid

miskin

so i asume from the amount of replys that no one knows ??

another question why do century sell a 11.1 volt lithium-ion pack for the hummingbird if they know it will burn out the board ???? just seems a bit stupid to me.they even say flight times of 15-20 minutes the the pack

Charlie

Some people say that an 11.1 volt will burn the board up, but other's say it won't (I have never tried one). I am running a 2 cell 7.4 volt 2100mah and it works great, it has all kinds of power, and I am getting around 15-20 minutes of flight time.

crashparry

Just put a fuse between the motor and board. No chance of blowing the board then. Simple.

miskin

just a 5amp fuze the sort you would get in the motor trade ???do it put it in the +or - wire on dont it matter ...

thanks for the advice crashparry[sm=thumbup.gif] anymore will be gladly recieved

crashparry

No worries mate.

I've not done this myself but have heared of others doing it. (I'm still on stock cells).

But I imagine a 5amp (inline) fuse on the +ve wire will protect the board from surges from the motor if/when there is a rotor strike or the motor is impeded in any other way. I beleive this is what burns most boards!

miskin

i will do this at work tomorrow

i have another question if you dont mind

every now and then i get a big wobble from the hummingbird a up n down wobble??? i can power out of it but sometimes if i leave it gets some bad it just drops out of the air...my freind also has the same problem ???

can you help me on this one

thanks

miskin

crashparry

I'm not sure I can help with that one, I'm pretty new to these things myself.

Although I noticed with my dragonfly I often get the same symptoms, i usually just land, re-trim and balance everything. this usually solves the problem. I think once a wobble develops it just increases until you cant control it anymore. I call it circular cause and effect!

miskin

crashparry

im new to the heli's too.. infact this is my second hummingbird in less than a month

crashparry

Blimey Mate, first one didn't go down too well then (or is that up ).

I've been building and flying fixed wings for a few years now, but am thinking this may be causing me more problems since I naturally try and fly my heli like a plane....it dont work [&:]

If you are on your second, they have obviousley got under your skin, I know mine has.


Best o' Luck buddy [8D]

miskin

crashparry
it went up and down fine i just got a big cocky with it and ended up braking it

i also fly fixed wing..ive been flying them for just over a year now

i dont think its causing me a problem i just cant get my head around a few things