New castle 1515 sensored electrical spec

[maxxximatoze]

Originally Posted by Pdelcast

Were you running sensored or sensorless? What phase advance were you using?

Note that you will see higher IO at higher phase advance.

Thanks!

Patrick

Thx for the answer. It was sensorless. I have tested both mode and no real differences between the two. The advance is set to low (0 to 5 if I remember well) with castle link.

[maxxximatoze]

And now here is the Rm for each phase (measured with precisely 5A passing through the phase and a millivolt meter on the motor solders)

AB=5.6 mohms
AC=5.6 mohms
BC=4.4 mohms

It's weird that there is so much difference between two phases, no ?

average of the three 5.2 mohms

[Pdelcast]

Originally Posted by maxxximatoze

And now here is the Rm for each phase (measured with precisely 5A passing through the phase and a millivolt meter on the motor solders)

AB=5.6 mohms
AC=5.6 mohms
BC=4.4 mohms

It's weird that there is so much difference between two phases, no ?

average of the three 5.2 mohms

I'm surprised to see THAT much difference, usually they are a little better balanced.

I'd honestly expect to see slightly lower (A) to (B) and (B) to (C) than (A) to (C).

B phase has a shorter run to the outside than A and C.

But, it's still within nominal.

Thanks!

[maxxximatoze]

Originally Posted by Pdelcast

I'm surprised to see THAT much difference, usually they are a little better balanced.

I'd honestly expect to see slightly lower (A) to (B) and (B) to (C) than (A) to (C).

B phase has a shorter run to the outside than A and C.

But, it's still within nominal.

Thanks!

Yes, my bad. the values are AB=5.6 AC=4.4 and BC 5.6

[Pdelcast]

Originally Posted by maxxximatoze

Thx for the answer. It was sensorless. I have tested both mode and no real differences between the two. The advance is set to low (0 to 5 if I remember well) with castle link.

Not surprising you didn't see a difference -- even in sensored mode, timing above a certain threshold is dominated by the sensorless routine. (which makes sense...)

You are probably close to the maximum 5 degree advance at 24V, so your rise in current is normal.

Thanks!

Patrick

[maxxximatoze]

Originally Posted by Pdelcast

Not surprising you didn't see a difference -- even in sensored mode, timing above a certain threshold is dominated by the sensorless routine. (which makes sense...)

You are probably close to the maximum 5 degree advance at 24V, so your rise in current is normal.

Thanks!

Patrick

OK good to know. I will try with 0 timing to see what append and report here...

[maxxximatoze]

On the motor box I can read "revision date: 03/17" and "PKG: 6140-03-0401". Maybe it's not a genuine castle 1515 ? If it's the case it would be a very nice (and expensive ;) ) counterfact !

[maxxximatoze]

Could very good bearings (like boca ceramic abec 7 for exemple) reduce I0 losses and if yes in which proportions ?

[maxxximatoze]

For I0, I have tested at 0 timing. Same results at all voltage.

For phase Rm, I have double checked every of my measures of the new 1515 and all the results are good.

AB=5.6 mohms at solder tab 7 mohms at bullet
BC=5.6 mohms at solder tab 7 mohms at bullet
AC=4.4 mohms at solder tab 5.8 mohms at bullet

Just to compare here is the results for my old hpi alphastar 2350kv made by castle with shortened wires (old design without solder tabs)

AB=6.2 mohms at bullet
BC=6.2 mohms at bullet
AC=6.2 mohms at bullet

Perfectly equal phase to phase. I have to say that I am a bit desapointed by the result of the 1515 sensored. I will have to check how the coper wires are connected to the tabs, maybe a defect. How can I check if it's a genuine castle ? Amain is a reputable store, isn't it ?

[Pdelcast]

Originally Posted by maxxximatoze

For I0, I have tested at 0 timing. Same results at all voltage.

For phase Rm, I have double checked every of my measures of the new 1515 and all the results are good.

AB=5.6 mohms at solder tab 7 mohms at bullet
BC=5.6 mohms at solder tab 7 mohms at bullet
AC=4.4 mohms at solder tab 5.8 mohms at bullet

Just to compare here is the results for my old hpi alphastar 2350kv made by castle with shortened wires (old design without solder tabs)

AB=6.2 mohms at bullet
BC=6.2 mohms at bullet
AC=6.2 mohms at bullet

Perfectly equal phase to phase. I have to say that I am a bit desapointed by the result of the 1515 sensored. I will have to check how the coper wires are connected to the tabs, maybe a defect. How can I check if it's a genuine castle ? Amain is a reputable store, isn't it ?

Disappointed by what?

Those are excellent numbers. At 100A, the whole motor is only dissipating 50W.

The difference is simply that there are tabs -- and A & C phase have slightly higher resistance because they go farther around the rear of the motor, while the B phase terminates right at the terminal.

Perfectly normal. The motor phases are balanced, there's just some additional resistance on A&C for the tabs.

Thanks!

Patrick

[maxxximatoze]

Originally Posted by Pdelcast

Disappointed by what?

Those are excellent numbers. At 100A, the whole motor is only dissipating 50W.

The difference is simply that there are tabs -- and A & C phase have slightly higher resistance because they go farther around the rear of the motor, while the B phase terminates right at the terminal.

Perfectly normal. The motor phases are balanced, there's just some additional resistance on A&C for the tabs.

Thanks!

Patrick

OK, it's certainly perfectly fine. Do you if high grade ceramic bearing can reduce I0 in a measurable manner, or it's useless ? (and make it run noise free, the orignal bearings tend to make some noise at different rpm)

Ps: what is the toshiba mosfet ref used in the mamba monster X, if it's not top secret, TPHR6503PL ? just to know... And I promise, I stop bother you with all my questions ;)