New castle 1515 sensored electrical spec
 

Hi all,

What is the electrical parameters of this new motor (I0 and rm). Does anyone have the opportunity to measure these parameters ?

RM: .005 ohms (5 milliohms)
IO: 2.7A (out of the box, before run-in)

Thanks!

Thanks Patrick for the answer.

I suppose that I0 is for 10V ?

So the iron losses for 16V should be around 54W, am I right ? I have a Hpi Alphastar 2350KV (If I'm remenber well, is a 1517 1Y with N28UH magnets and 0.35 lamination for cost killing which is, in fact, 2480KV@no load) that is burning 70W in iron losses at 16V, how many degrees difference between the two ?

It is controlled by a mamba max pro with 1.52 firmware, so the sensored mode attract me a lot ! Thx !

That's measured at 24V. I can get you a 10V measurement if you want, we test the 6S motors at 24V.

We are using a .2mm lamination, special High Frequency grade, Japanese steel. So the iron losses are quite low.

I think you should see about 1/2 the iron losses with our motor, vs a motor with standard .35mm laminations. In our motor, the iron losses are the minority losses -- more important is the copper losses. At 5 milliohms, the iron losses are about 50 watts at 100A.

Thanks!

This new motor is really efficient ! the hpi 2350kv (also made by castle for hpi but low cost) is more than 5A at 24V no load (125W of heat...), almost twice the current of the new castle 2200kv sensored at the same voltage ! Not bad at all. My current motor need a big fan (delta 40*28mm FFB0412VHN 15.79CFM 1400LFM) to stay cool for long time run (offroad track with turnigy graphene 4S 10000mah, 30 to 40 min run time with 18 pinion 48 spur), I think that with the castle, no need for a fan.

Raaahhh I think I need to spend some money...

What is th I0 at 16V ? something around 2.2/2.3A ? Thx !

At 24V the etamax of this new castle is calculated at 95.3%, this is HUGE, and one of the best I saw until now ! Really cool. What is the real wolrd max eff of this motor ?

Around 90% efficiency max, real world.

Am I right for I0 at 16V ? Would be around 35/37W of heat.

It's not linear with RPM, you probably won't see that much of a reduction on IO. I would guess 2.5-2.6A

Thanks!

OK. A so small difference is surprising me because, with fresh measures, on my motor the difference is about +30% no load current between 16V (3.75A) and 24V (almost 5A). The result is almost twice the power from 40Krpm to 60Krpm (60W to 120W) ! Thx for the informations about your new motor.

That's because of the thinner, more resistive laminations. The delta in IO is much smaller with RPM.

Thanks!

OK ! thx. That makes sense. So my motor is almost just a heat generator, althought I'm not complaining about the real performance level, but when you add the high efficiency, low temp et sensored mode of this new castle motor... I'm just wondering how resistant to dirt/bad treatment this motor could be when compared to the old unsensored one, only time would tell ?