Mini Titan Electrics

[andyrauc]

Hi
Just completed building my first electric Heli and very impressed. Unfortunatly my knowledge of electric heli's is very limited and although there is a wireing diagram in the manual I am not sure if i have everything wired correctly. I would really like to be sure everything is correct before connecting the battery.
I am using a thunder power 2100 11.1V battery and see that apart from the two cables connected to the ESC there is also a little plug with 4 thin wires. Is this supposed to be connected to the receiver to power the servo's. If this is the case what does this cable look like and is there a part number so i can source one. It would seem as if the battery connection is a special plug.
Any advice or pics would be appreciated.

[uragano47812]

I think that you have a bit of confusion. The plug you have seen is the plug for balancer. This device is a must for a longer life of the lipo packs. So if you don't have a balancer yet than buy one. You can pick the TP one but there are many others. The plugs are different between the lipo packs so TP and Flightpower has the same plug, Hyperion packs has another one and so the kokams. You will need a simple adapter.

The ESC provide (with his internal BEC) current to RX with his wire on Throttle channel.

[rdlohr]

You are right to be worried. You really need a wiring diagram for your receiver.

The big red and black wires on the ESC go to the battery. Use a Deans plug or equiv in-line to unplug itt.

The small red/yellow/black wire on the ESC plugs into the receiver on the throttle channel (3 on Futaba, 1 on JR).

The small red/yellow/black wire on the gyro plugs into the receiver on the gyro channel (4 on both Futaba and JR).

The small red/yellow/black wire on the rudder servo plugs into the gyro.

If your gyro has a dedicated gain small red/yellow/black wire, it goes to receiver channel (5 on both Futaba and JR)

The other three servo small red/yellow/black wires plug into the receiver as follows:

Aileron: Futaba Channel 1, JR Channel 2
Elevator: Futaba Channel 2, JR Channel 3
Pitch: Futaba Channel 6, JR Channel 6

The extra connector on the battery with small red/blue/white/black wires is the for a balancer.

Good Luck,
Rick

[andyrauc]

Thanks Rick
I had a supsicion that this plug was not required and that it must have some other use. I will certainly look into purchasing the balancer. This is the first I have heard about it. So it seems as if i am now ready to fly. Is there any need for onboard battery level indicators. On my gas raptor I have a simple device that displays a row of LED lights and gives a quick visual indication or is it a case of using time when flying electric to determine when it is time to recharge.

[Bunter]

or is it a case of using time when flying electric to determine when it is time to recharge.

That's how most people fly, but to do that you really need to be able to monitor how much charge you put back into the flight packs otherwise you're pretty much in the dark. A good charger/balancer will almost certainly provide this infomation. It's common not to discharge the battery by more than 80% of its capacity. So if you have, for example, a 2500 mAh battery pack and you monitor your flight times, you can push flight times up until you get to the point where you put back in 2000 mAh. Does that make sense?

Bill

[andyrauc]

Hi bill
I have a Electrifly Triton Junior charger supplied by Heliproz. I asked then to supply the best charger for my thunderpower 2100 batteries. They however never suggested a balancer. On my first charge on a brand new battery it took only 30 minutes to charge the battery. I was told that the charge should in fact take closer to an hour. It would appear as if the charge is fast when I really do not need a fast charge. I have ordered a balancer so hopefully this will make the process more accurate.

[chuckk]

batteries are shipped new in the 11.7V range. 30 min's sounds about average to charge in that scenario. the first time you fly it and drop the voltage below 11 volts it will take close to an hour.