05-02-2012, 09:58 AM
Yes Gazz is right the more mAh the more capacity the pack has, this is similar to having a bigger fuel tank, but it also governs the max power you can draw at any one time. because to find your max current draw you multiply this number by the C rating.
Gazz is also spot on in saying that if you have everything correctly set up you can't burn it out by having a bigger battery. The motor will only draw excess current if it's over propped, To say that a different way you can't burn out the motor unless you over load it, it will only draw the current it needs regardless of what is available. As Gazz also suggests Checking your current draw is an essential thing to do especially if your setting things up to get the max performance from them.
Having said that, this is my philosophy on setting up power systems for my aerobatic models. I think you've got to look seriously at the all up weight of the model and the C of G to take things into account properly. What I want is the motor, ESC and batterys to provide all of the balance weight. I use a big motor and I can alter it's load by changing props size. I use a Lipo pack that will let me fly for about 5mins and still have a little reserve this is plenty long enough to concentrate if you doing aerobatics. 5 mins is plenty!! I want the lightest possible motor/battery combination compared to it's power output. That is to say I'm looking for the "power system" with the best power to weight ratio. I have a 10 second burst rating on my batteries and on my ESC and I will prop my motor to make good use of this. There are times when you want that extra grunt to fly vertical or accelerate back to flying speed out of a stall or spin or unexpected bad situation that happens close to the ground
................and it will happen!!
I do not fly on full throttle all the time, but I do get the most out of my set up.
I use a light wooden prop with a big diameter and a small pitch like a 15x6 or 15X5. A light prop will spool up fast and the slow pitch will give the model max acceleration. This is handy for 3D flying and aerobatics close to the ground.
I don't go for max speed but I do want the best acceleration, when I move the throttle stick forward I want the model to jump!! This is why I worry about the all up weight 'cause it's easier to accelerate a light model than a heavier one. I want it to accelerate to flying speed and flying speed will be lower if the all up weight is lighter.
Those 2600 6S 20C lipos will certainly do the job !!
Gazz is also spot on in saying that if you have everything correctly set up you can't burn it out by having a bigger battery. The motor will only draw excess current if it's over propped, To say that a different way you can't burn out the motor unless you over load it, it will only draw the current it needs regardless of what is available. As Gazz also suggests Checking your current draw is an essential thing to do especially if your setting things up to get the max performance from them.
Having said that, this is my philosophy on setting up power systems for my aerobatic models. I think you've got to look seriously at the all up weight of the model and the C of G to take things into account properly. What I want is the motor, ESC and batterys to provide all of the balance weight. I use a big motor and I can alter it's load by changing props size. I use a Lipo pack that will let me fly for about 5mins and still have a little reserve this is plenty long enough to concentrate if you doing aerobatics. 5 mins is plenty!! I want the lightest possible motor/battery combination compared to it's power output. That is to say I'm looking for the "power system" with the best power to weight ratio. I have a 10 second burst rating on my batteries and on my ESC and I will prop my motor to make good use of this. There are times when you want that extra grunt to fly vertical or accelerate back to flying speed out of a stall or spin or unexpected bad situation that happens close to the ground
................and it will happen!!I do not fly on full throttle all the time, but I do get the most out of my set up.
I use a light wooden prop with a big diameter and a small pitch like a 15x6 or 15X5. A light prop will spool up fast and the slow pitch will give the model max acceleration. This is handy for 3D flying and aerobatics close to the ground.
I don't go for max speed but I do want the best acceleration, when I move the throttle stick forward I want the model to jump!! This is why I worry about the all up weight 'cause it's easier to accelerate a light model than a heavier one. I want it to accelerate to flying speed and flying speed will be lower if the all up weight is lighter.
Those 2600 6S 20C lipos will certainly do the job !!
“The knack of flying is learning how to throw your machine at the ground and miss.”
"When once you have tasted flight, you will forever walk the earth with your thoughts turned skyward, for there you have been, and there you will always long to return." ~Leonardo Da Vinci