concept1
Key Veteran
Location: Youngstown, OH
| AMPS!
at hover lets say I am pulling 10 amps and at full pitch 60 amps. Have you ever blown a cicruit breaker in the house running a table saw,or any power tool, cutting a 1/4 inch piece of wood is no problem, but 3 inch thick piece of oak blows my circuit breaker, both cuts get same 110v, but the thicker piece will suck more amps!
that is what is so nice about electric heli's, you really don't need Gov's if the motor and gearing is good, nitro is a different story, you have fuel and air mixture etc...
in generic terms the electric heli motor at 100% throttle will spin so fast, and by adding pitch it will try to keep the same rpm by sucking more amps, with the right gearing and right motor it will stay constant, or change very little. if you are running a throttle curve, now you are also bleading off voltage thru your esc loosing efficiency, and creating heat in your esc. any heat is efficency loss. but for each application you would need to see just how much efficency you loose by using a throttle curve. for example if you are over reving your motor it will probably be more efficient to lower the curve. my motor has a max rpm of 25000, and I found that over 27000 (by calculations)it is very very inefficient! it runs hot and I loose flight time. so I have lowerd my curve, but my goal is to get a motor with slighlty less Kv so I can go back to 100% throttle, I have found the best gearing for my motor, a larger pinion I loose 30 seconds of time and a smaller pinion I over speed my motor even worse and loose flight time. |
