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HomeAircraftHelicopterMain Discussion › Will this work? Generator to charge batt under flying...
05-31-2012 10:04 PM  6 years agoPost 1
omj86

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North Cape, NORWAY

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I'm planing to set up a bigger plane, C-130 or Canadair CL-2/415
use gas engines and have FPV in it. With some extras likt LED lights (landing lights) +++ alot... So, this will use some electric power, and because I dont want to fly for 10min and then charge the batterys for ages before I can fly again I wounder if this can work?

I have attached a simple drawing from paint, I guess you'll understand the picture So, will it work?...

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05-31-2012 10:10 PM  6 years agoPost 2
lejon

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Las Vegas, Nevada

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no attachment
Nothing to look at so I doubt there will be much help offered.

lejon

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05-31-2012 10:27 PM  6 years agoPost 3
omj86

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North Cape, NORWAY

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look in my gallery, cant get it up in the post...
If you can, please copy iy and upload it here, thanks.

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05-31-2012 10:34 PM  6 years agoPost 4
Carey Shurley

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Orlando, FL - USA

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Sullivan Products makes an off the shelf generator solution called the Genesys. They appear to also supply larger systems for UAV type vehicles

Proprietor - Gas Powered Helicopters

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05-31-2012 10:36 PM  6 years agoPost 5
Jeff polisena

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westpalmbeachflorida usa

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Even though its 12V I don't thing gas stater will put out enough amps to maintain a charge . There are charging coils you can buy to bolt on to handle the charge since weight seems not to bean issue with you.

I stole it ,flew it and gave it back ;)

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05-31-2012 10:36 PM  6 years agoPost 6
fenderstrat

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Aston,Pa

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well the first rule of lipo is NEVER charge un attended.

second how are you going to control the charger as in starting?also you show different cell counts

Compass helis Support Team
PerformancePlusRC field rep
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TEAM KBDD

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05-31-2012 10:55 PM  6 years agoPost 7
omj86

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North Cape, NORWAY

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I'm looking for a multicharger that can charge 3+ batterys, diffrent batterys. So that I can pre-set the charger to send diffrent power to the batterys. Will I find that? What battery can be used insted of lipo? Batterys that "can be" charged un attended, dont want my plane or heli to suddently take fire, tho, it would have been a realistic "mayday" ...but dont want to throw my money away.

I'm not going to connect the generator electric to the gas enginge.
I'm thinking of setting something on the engines shaft inside the prop. that i can set a drivebelt around and connect to the shaft on the generator to run it.

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05-31-2012 11:19 PM  6 years agoPost 8
Heli 770

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USA.

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05-31-2012 11:19 PM  6 years agoPost 9
omj86

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North Cape, NORWAY

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thanks for the picture.

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06-01-2012 12:24 AM  6 years agoPost 10
GetToDaChopper

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Las Vegas , NV

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way too many unknowns here to advice, i feel like that robot on lost in space "insufficient data, error, error, error" !!! lol

    ▲
  ▲ ▲
▲ ▲ ▲ One of a Kind !!!

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06-01-2012 12:56 AM  6 years agoPost 11
rtdillon

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Huntsville, AL

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save weight!
Consider 1 large 12v NimH pack with a separate PRO BEC set for each voltage. Less overall battery weight. You can directly power the system from the generator with the batteries in parallel to the generator. The batteries only have to be large enough to maintain the system while you land.

You will have a challenge with the 14.4v sub-system using this method. Can it use 12v?

Consider telemetry to check the system in flight and LAND immediately if you see a loss of voltage on the battery.

You can also arrange to shut off unnecessary systems should the generator quit, giving you longer to land.

No,No..The other left!

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06-01-2012 01:08 AM  6 years agoPost 12
McKrackin

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Lucasville,Ohio

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You'll NEVER make enough electrical power to charge flight packs in the air.

If you're going to put a gas engine on it.make the gas engine the main power and then charge the RX pack with a generator.

I fly with a generator myself but no way in hell will it charge lipos powering the drive motor.

I literally never use the word literally right.

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06-01-2012 01:14 AM  6 years agoPost 13
omj86

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North Cape, NORWAY

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I was going to have the gas engine on main power yes :-)

If you have a el engine that can give the generator enough power to charge the
battery thats drifting the el engine so it never dry out i think you have something uniqe ;-)

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06-01-2012 01:17 AM  6 years agoPost 14
McKrackin

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Lucasville,Ohio

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Why so many lipos if it's flying on gas power?

I can fly all year and never charge a single battery...except my radio and starter.lol....

NO LIPOS in the air.

I literally never use the word literally right.

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06-01-2012 01:19 AM  6 years agoPost 15
McKrackin

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Lucasville,Ohio

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One big LiFe pack or NiMH will power the lights and FPV.

An on board genny will charge that pack....The genny will POWER THE LIGHTS AND FPV.

I literally never use the word literally right.

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06-01-2012 08:19 AM  6 years agoPost 16
omj86

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North Cape, NORWAY

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The picture was not an actually modell, it was just to show what i was thinking.. Dont know how many batts, will have to mesure how much power all the electric us and get a gen that can support that and a batts for that.

The gen I found produse 12v 120w @ 18k rpm, but connected to the gas engine I it will not have a constant rpm, any ides how to get that to work out?

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06-01-2012 01:43 PM  6 years agoPost 17
Rotormaster

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Australia

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If you're going to put a gas engine on it.make the gas engine the main power and then charge the RX pack with a generator.
I don't think he was going to put a gas engine in it for decoration mate.
The gen I found produse 12v 120w @ 18k rpm, but connected to the gas engine I it will not have a constant rpm, any ides how to get that to work out?
I think you'll be ok. If it is just FPV that you are doing... as long as you don't get the urge to do tic-tocs and all that, then the loads on the rotor wont be such as to bog down the motor and your RPM.

Does it say that the RPM has to be exactly 18,000 at all times? I think that would be quite unachievable. In any case, I would contact the manufacturer and see what they say.

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06-01-2012 02:03 PM  6 years agoPost 18
Rototerrier

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Fayetteville, GA - USA

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Use NiMH or Life batteries with the generator. Life really need to be balanced eventually...so I use NiMH with mine.

You only need the battery to get things kicked off. Once the engine is running and the heli is in the air, ALL your power is supplied buy the generator and it keeps the battery topped off.

I got away with using 4 cheap hobby king nimh batteries. Generator is pumping out 5.5v to my regulator which then powers my RX and keeps the battery topped. If you need more voltage, up the cell count on the NiMH. But that just unnecessarily ups the weight.

Gassers Rule, Nitros Drool, Electrics...uhhh...Joule?

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06-01-2012 02:21 PM  6 years agoPost 19
omj86

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North Cape, NORWAY

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How do I replay (quote) another post?
Anyway... The generator, it dosent need to be @ 18k rpm all the time,
but lower rpm = lower volt and watt.

I guesss it will be more than just FPV.
Looking for a 1:12 / 1:14 scale C-130 Hercules or Canadair CL-215/415.

And found a sweet led flashlight on ebay, that uses 3x AAA batts, can use chargebale batts there, and can remove the lens with the leds to fit outside the fuselage (landing lights in plane, maybe SAR on a heli? ) ...and have the battery pack inside. The lens is only 3x2cm.
http://www.ebay.com/itm/23066904630...984.m1438.l2649

And I'm just been looking at a generator like this:
http://www.ebay.com/itm/27093294237...984.m1438.l2649

12v, 120w, 10A...so it will produce 10.000 mAh so it will be strong to power up a lot of stuff..

If this will be in a heli I'm going to make a plate for the flashlight and allso have a cam on that plate, (and adjust the cam and light looking the same place)..with two servos to move up/down, right/left and connect the cam to a 2" LCD screen placed inside the cockpit. (this way I can use the light/cam as SAR,and just juse the FPVcam inside the cockpit to look over on the LCD screen ..
On a plane the flashlight will only be a landing light.

It's very strong as you can see on the pictures on ebay.
Full zome and power mode looks great.

Anyway, you see where this are going? all this stuff will use some power, and there will be diffrent batterys on diffrent sizes. (there allso may be more stuff / weight on this ? who know.. A winch on the side door maybe on a SeaKing heli? ... (I think I may be getting me a CO-pilot for this hehe..

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06-01-2012 02:36 PM  6 years agoPost 20
omj86

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North Cape, NORWAY

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One option I have to get the Gen to go constantly at 18k RPM is to
set in a small gas engine that only runs the Gen. (and use one or two fans at the enginge so it wont get hot inside the plane) and lock a servo on it so it will maintain X rpm alltime, that gives the Gen 18k rpm. This will not be a prob if I go for a 12 or 14 scale C-13o or CL-215, there is a lot of space there. So I have a few options.

But what I need help to is to find a regulator that can get 12V / 120W / 10A input and load several batts from 3.6V to 12V. And allso cut when the batts are full so they wont be overloaded.

But the extra engine I guess will be a problem in a heli...

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HomeAircraftHelicopterMain Discussion › Will this work? Generator to charge batt under flying...
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