1300kv timing

[donangelo]

You know that timing and frequency leads this engine? I've made ​​15 and 12kHz, and warm to the finish.


Un saludo

[kjoer]

These are the settings I use with my Mini V-Bar external gov controlled YGE 60 on my MSH branded Scorpion 1300KV.

timing: 18 degrees
brake: off
cut off type/accutype: slow down/LiPo
cut off voltage: 3.1V
cells: 6
special functions: nothing

act. freewh./gov. mode: freewh. on/gov. off
gov. mode P-gain: 0.7 (not relevant with external gov and plane fast setting)
gov. mode I-gain: 0.03 (not relevant with external gov and plane fast setting)
startup speed: plane fast
PWM-frequency: 8kHz
startup power: auto 1-32%

Timing at 18 degrees. I don't know what speed controller you have, but YGE recommends a timing of 18 to 30 degrees. Scorpion used to recommend lower timing settings for their motors, but they seem to have started recommending 18 degrees for their newer motors.

Less timing --> more efficiency/cooler
More timing --> more power/hotter

Side note, very low timing settings with heli outrunners (no _timing_ sensor from motor to ESC) may induce backfires to the ESC, possibly killing it. This due to geometric tolerances of the motor (placement of magnets and such) and inaccuracy, partially due to RPM variation under load --> [ame]http://www.youtube.com/watch?v=RRbFHbZCX-k[/ame]

Frequency, I just have this at 8kHz, as recommended by Scorpion. The default MSH branded YGE 60 setting is 9kHz.

Again, I don't know what ESC you have, the most suitable settings may vary a bit depending upon ESC/motor combo.

[donangelo]

ok, thank.
another question, I mounted the esc with capacitors up to not hit in an accident ... Can this be bad for heat?

[kjoer]

No idea.

However fact is a 60A ESC running a 450 on 6S doesn't need much cooling.

P (W) = U (V) x I (A)

High voltage means only a low amperage is required to deliver a certain amount of power. In other words, at 6S, your ESC doesn't generate as much heat as on 3S (with appropriate motor), to deliver the same amount of power.

With my Mini Protos on 6S, it's possible to bang the crap out of it at 3500 head speed with crappy collective skills for six flights in a row, without electronics complaining a bit. Even in sunny hot weather! Motor will run hot, but within limits.

If your ESC doesn't complain the way you have it positioned, you're fine. Side note: wiring on your Mini must be a tad weird (and long?) to comply.

[donangelo]

Well just made its first flight and is spectacular, very stable and quiet. The esc is not heated and it seems better this position.
Position the cables:

Shot at 2012-08-24

Shot at 2012-08-24

Shot at 2012-08-24

Shot at 2012-08-24

Gracias por las respuestas.