ESC for the HK450 Helicopter

I use the Turnigy Plush 40A with 3A BEC

Why?
OK to do the math’s again
A HK450 Will Hover at 15Amps and do Punch Outs at up to 40Amps
So we need an ESC Electronic Speed Controller that can deliver double the hover amps simply because we fly around and be able to handle 40A bursts for extended periods because we will be doing 3D flying with this heli at some stage.
So the specifications of the ESC are
Cont Current: 40A
Burst Current: 55A
BEC Mode: Linear
BEC : 5v / 3A
Lipo Cells: 2-6
NiMH : 5-18
Weight: 33g
Size: 55×28x13mm
Where if we were to use the next model down yeah it is lighter but it can’t handle extended periods of power supply to the motor.
Also another factor to consider that is very important!
You electrics in your heli all up under load consume 1.5Amps from the BEC, now in a smaller ESC you only have a 2A BEC which is purely a Regulator circuit and is not very efficient, so it can deliver the 2A but it will have losses, and thus you could get what is known as a brown out to your receiver, that is when the power is lost and the heli needs to sync again with the transmitter, not so nice when flying near the ground as the heli will be stuck in the previous heading for a second or two.
The 3A BEC in the Turnigy is not a linear Regulator as described and I know this because I pulled one apart to look at the electronics in it, it uses a Buck Converter which is similar to a switch mode supply, and I tested this regulator at full load for 6 mins and it didn’t miss a beat. Perfect as far as I am concerned because I also use a digital tail servo which draws more current. Result is I don’t loose control of my heli.
Regards
Elias Gourvelos (EatAtJoes)