Help! Twin motor ESC question

[Houndpup Rc]

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Found this on their website

 

[Houndpup Rc]

In 2018 it was in Texas😂

Oh😂

 

[Houndpup Rc]

In 2018 it was in Texas😂

I think they might have moved it in 2020

 

[Mr Man]

I think they might have moved it in 2020

Yeah. 👍

 

[Houndpup Rc]

So is it closer to you than you thought?

 

[Mr Man]

So is it closer to you than you thought?

No, farther😂

 

[Houndpup Rc]

No, farther😂

Aw man! Too bad!

 

[Mr Man]

Aw man! Too bad!

It’s 12 hours…

 

[Houndpup Rc]

It’s 12 hours…

Vacation?....

 

[Mr Man]

Vacation?....

I wish😂

 

[LitterBug]

But there has ALWAYS been Flite Fest in Ohio even when there were some in other states.

As for the mismatched hardware.... Try it and see. I have done mismatched motors, props, and ESCs on a tricopter but the FC was able to compensate gloriously. Your Results may vary

 

[FishbonesAir]

Cause that‘s where Flite Fest Is!

I sure hope not, or I'm flying to the wrong place! 😆

 

[Houndpup Rc]

I sure hope not, or I'm flying to the wrong place! 😆

😂

 

[Mr Man]

I sure hope not, or I'm flying to the wrong place! 😆

🤣🤣🤣

 

[Piotrsko]

They will kinda synchronize if running from the same battery. TLDR explanation. COULD be annoying if rudder-less, but it's how I used to run my brushed motors way back in the dark ages.

 

[FlyerInStyle]

I'm building a small twin motor cargo airplane. 24" wingspan, 16" long, 1306 4000kv motors. My question is the ESC's. The only "matching" esc's I have don't have BEC's, so I'd have to use a seperate UBEC to provide power to the rest of the systems. Anybody have experience, good or bad, with using unmatched ESC's? I have a lovely 12a ESC with a 2a BEC, then a 15a Emax ESC I could use to power the other motor, and just solder the motor straight to it saving weight and hassle. It's tiny and only a few grams, nice in this micro build.

Any thoughts from anyone who's already done this? I'm in a time crunch since I'm trying to finish this before I head to FliteFest!

Capt Fishbones

I have tried, it wworks pretty well, but make sure tot est. If the motor gets close to the excs max current it owont work rpoabbly as one esc can provide more current htan the other. otherwise, jsut double check on the workbench, and calibrate them of course.

 

[Foamforce]

I have tried, it wworks pretty well, but make sure tot est. If the motor gets close to the excs max current it owont work rpoabbly as one esc can provide more current htan the other. otherwise, jsut double check on the workbench, and calibrate them of course.

I don’t think this will be an issue. The ESC itself doesn’t limit how many amps the motor can pull, that’s up to the motor. If the ESC can’t handle that many amps, it will overheat and burn out, but that’s not unique to a twin configuration. As long as both ESCs are rated to handle the maximum amps that the motor will pull, then full throttle should be almost the same on both.

 

[Houndpup Rc]

I don’t think this will be an issue. The ESC itself doesn’t limit how many amps the motor can pull, that’s up to the motor. If the ESC can’t handle that many amps, it will overheat and burn out, but that’s not unique to a twin configuration. As long as both ESCs are rated to handle the maximum amps that the motor will pull, then full throttle should be almost the same on both.

Unless each one handles the PWM frequency different...I don't know as I have never tried it.

 

[Foamforce]

Unless each one handles the PWM frequency different...I don't know as I have never tried it.

Yeah, there may be slight variations in efficiency and motor timing, but at full throttle they should both be at 100% duty cycle, so it shouldn’t be much.

 

[Houndpup Rc]

Yeah, there may be slight variations in efficiency and motor timing, but at full throttle they should both be at 100% duty cycle, so it shouldn’t be much.

and if you set it up with differential thrust that should help too because you can tune it one way or the other.