P-Limited Motors - Im going to jump on the hot seat.

[RandyatBBY]

bahaha I'm positive Randy means analytical. Nearly peed myself.

Ya that is what I meant. My spelling sucks and spell check some times get it wrong. LOL

[Darin Jordan]

awesome work darin, im liking my dynamite 1500s even more now..lol..that last load test is crazy, some motors well over 100 amps

Yup...

I was trying to find a prop that would load the DYNM1500 up to around 100A last night, and took it a LITTLE too far...

20151201_201117.jpg


Motor IS still in one piece, however...

[ray schrauwen]

Nice data, thank you!

[ray schrauwen]

The Turnigy and TP 60 series motors put out a lot of power if they can take the heat.

I noticed that too. I like that Turnigy motor. The winding's are skewed like some Neu motors.

[Doby]

Thanks for taking the time (and $$) to do this.

[TRUCKPULL]

Darin
What prop did you try, to get it to 186A and 112 F in about 13 seconds??

According to your first picture of your setup, you have water cooling also on the motor. Was this working??

Larry

[Darin Jordan]

Darin
What prop did you try, to get it to 186A and 112 F in about 13 seconds??

According to your first picture of your setup, you have water cooling also on the motor. Was this working??

Larry

I haven't been using water cooling for these tests. Not necessary, since I haven't been running them more than 10-seconds each test run.

I have been water cooling the ESC in order to keep it consistent and not a factor.

These final tests will also be done without water cooling the motor. I want to be able to measure the actual starting and ending temperatures.

The prop was "BIG"... I don't think I'd recommend running a motor like this at those kind of amps. Likely wouldn't last a lap. Not to mention, did you notice the massive RPM drop? Definitely overloaded!

[Darin Jordan]

Darin
What prop did you try,

Also, keep in mind... when I'm talking "Prop"... I'm talking about an AIRPLANE Prop... something to provide a specific load.

[T.S.Davis]

Yup...

I was trying to find a prop that would load the DYNM1500 up to around 100A last night, and took it a LITTLE too far...

2600 watts!......

That last one is actually Darin checking to see if his eyebrows are still there.

Darin, are you thinking about using a gears to tweak in the right amperage? I might have an old turbo trans kicking around.

[Brushless55]

The Turnigy and TP 60 series motors put out a lot of power if they can take the heat.

I've run the Turnigy motor in my JAE with the same setup as my AQ2030 and AQ1800, and in 2 laps the Turnigy motor when I brought it in to check was 159*f

[ray schrauwen]

Wow, thats hot!

Did you change your timing to zero since it is a D wind compared to the Y wind of the others?

[Brushless55]

Wow, thats hot!

Did you change your timing to zero since it is a D wind compared to the Y wind of the others?

yes Ray I did change the timing to make sure I was testing the motor correctly from the start and to be as fair as I could with it
I dropped it to 0 or 3.75* from the 11.25* that I was running with the AQ motors with a T120 esc
I would need to power up the boat to check to be 100% sure

[rayzerdesigns]

Yup...

I was trying to find a prop that would load the DYNM1500 up to around 100A last night, and took it a LITTLE too far...

[ATTACH=CONFIG]139212[/ATTACH]


Motor IS still in one piece, however...

Funny thing.. I have had a couple of these motors constantly above 160.. They still run fine.. At nats in colorado in p limited offshore i ran all 4 heats with same motor.. Temps were right at 170 after 4 minutes.. That motor is still in my mono running strong.. Im a believer

[T.S.Davis]

That's what I meant. If they can take the heat there's more available power. I get my Neu motors hot with little fear. If you you take a 2030 to those temps you need a new 2030.

[Darin Jordan]

That's what I meant. If they can take the heat there's more available power. I get my Neu motors hot with little fear. If you you take a 2030 to those temps you need a new 2030.

I would NOT expect these motors to "take the heat" like that for more than a lap... I ran this on the bench for only about 13-seconds... That's not even to the back straight on a pace lap if it were on the course...

Guys... do NOT take these tests as planning material for your next race event. I'm purposefully pushing things to their maximums under controlled conditions in an attempt to glean some info that will let potential be compared between various motor options. I can assure you that if you try to push 175+ amps through one of these in your boat, well....

Don't be "newbs"... think critically and take the info for what it is...