The Bronco twin - trouble getting motors to spin same speed

[GazpachoZen]

Try as I may, I can't get the motors to spin even close to the same speed. One of the ESC's I received with the kit certainly seemed suspect, as it was completely unwilling to even start spinning until I had the control at about 50%, and it would then lurch into action. I bought another matching ESC and things got better, but the two motors still spin at distinctly different speeds for the same throw of the throttle.

Any thoughts here?

I've not yet attached the power pods to the plane, so I'm still able to fiddle with all the wiring.

I figured a twin like this would give me plenty of power towards my goal of eventually adding a camera and flying POV, so I'd hate to loose this option.

 

[Mr NCT]

PrTry as I may, I can't get the motors to spin even close to the same speed. One of the ESC's I received with the kit certainly seemed suspect, as it was completely unwilling to even start spinning until I had the control at about 50%, and it would then lurch into action. I bought another matching ESC and things got better, but the two motors still spin at distinctly different speeds for the same throw of the throttle.

Any thoughts here?

I've not yet attached the power pods to the plane, so I'm still able to fiddle with all the wiring.

I figured a twin like this would give me plenty of power towards my goal of eventually adding a camera and flying POV, so I'd hate to loose this option.

I'm assuming you got the either the B or C twin power pack and you've connected the ESCs to a Y cable and then to the Rx (and disconnected one of the ESC red wires) and they are running off one battery on a Y cable. The next step is to calibrate the ESCs the same way you would for a single - that's an easy step to forget.

• Props off
• Battery unplugged
• Tx on and throttle all the way up
• Plug in battery & wait for beeps
• Lower throttle to minimum

Now if the ESCs and motors are good they should start and spin in sync

 

[GazpachoZen]

[...] The next step is to calibrate the ESCs the same way you would for a single - that's an easy step to forget. [...]

Well, I'll be darned.
You were COMPLETELY right.
I totally forgot I even had to do that.

Thanks!

 

[Mr NCT]

Well, I'll be darned.
You were COMPLETELY right.
I totally forgot I even had to do that.

Thanks!

Woo hoo!! I'm going to print this out, have it notarized and framed and show my wife.

 

[Bricks]

Woo hoo!! I'm going to print this out, have it notarized and framed and show my wife.

She will just tell you even a stopped clock is right once in a while.

 

[Piotrsko]

Your wife will admit you are correct??? Heretical words my man. Mine thought she was wrong once, but actually was mistaken.

 

[Merv]

Woo hoo!! I'm going to print this out, have it notarized and framed and show my wife.

I would wait until she is mad at you to show her the document, then go buy a new plane.
She will still be mad, but at least you get a new plane.

 

[Piotrsko]

Hmmm another 20 years of slow simmering wife that was proven wrong against a new plane? Umm, nope. Rather just piss her off and buy the new plane, that lasts a far shorter time. Would save the certificate, just because.

Happy wife, happy life

We now return you to our regularly scheduled repair forum