05-03-2017, 08:50 AM

@Ackmaniac

If @ 1440W Electrical:

0rpm -> 13.33%

6718.93rpm -> 100%

We could say:

100% - 13.33% = %86.67 range of 1440W electrical duty cycles

So could we say ?:

6718.93 rpm / %86.67 = 77.52313 rpm per additional 1% duty cycle @ 1440W electrical?!

95% duty - 13.33% duty = %81.67

In simple terms 95% is 81.67 more percent than 13.33%

Could we say ?:

6331.31 rpm = 81.67 "More Percent" x 77.52313 rpm per additional 1% duty cycle @ 1440W electrical

So if I had to hazard a guess, I'd say:

1440w electrical @ 100% duty = 6718.93 rpm

&

1440w electrical @ 95% duty = 6331.31 rpm

^take this with a huge grain of salt :thinking:

Pack V = 36V

Ohm Resistance = 0.016ohm

Batt Max = 40A

Motor Max = 300A

Absolute Max = 1000A

KV = 190kv

In simple terms:

~0w electrical @ 100% duty = 6840.00 rpm

1440w electrical @ 100% duty = 6718.93 rpm

1440w electrical @ 95% duty = 6331.31 rpm <<- Is this the correct answer?

1440w electrical @ 13.33% duty = 0 rpm

@Ackmaniac ?! :thinking:

",0,0,http://www.electric-skateboard.builders/t/the-is-my-math-right-thread/17037/70,2017-02-04 04:16:17 UTC

If @ 1440W Electrical:

0rpm -> 13.33%

6718.93rpm -> 100%

We could say:

100% - 13.33% = %86.67 range of 1440W electrical duty cycles

So could we say ?:

6718.93 rpm / %86.67 = 77.52313 rpm per additional 1% duty cycle @ 1440W electrical?!

95% duty - 13.33% duty = %81.67

In simple terms 95% is 81.67 more percent than 13.33%

Could we say ?:

6331.31 rpm = 81.67 "More Percent" x 77.52313 rpm per additional 1% duty cycle @ 1440W electrical

So if I had to hazard a guess, I'd say:

1440w electrical @ 100% duty = 6718.93 rpm

&

1440w electrical @ 95% duty = 6331.31 rpm

^take this with a huge grain of salt :thinking:

Pack V = 36V

Ohm Resistance = 0.016ohm

Batt Max = 40A

Motor Max = 300A

Absolute Max = 1000A

KV = 190kv

In simple terms:

devin, post:30, topic:17037 Wrote:Which RPM does 1440W electrical = 95% duty cycle?

Ackmaniac, post:10, topic:17037, full:true Wrote:Correct. But lets imagine that the motor spins at no load with 94 % duty cycle. And now we want full power and feed the motor with 95% duty cycle. So my question is at which no load can i still achieve 1440 watts when i fed the motor with 95% duty cycle.

~0w electrical @ 100% duty = 6840.00 rpm

1440w electrical @ 100% duty = 6718.93 rpm

1440w electrical @ 95% duty = 6331.31 rpm <<- Is this the correct answer?

1440w electrical @ 13.33% duty = 0 rpm

@Ackmaniac ?! :thinking:

",0,0,http://www.electric-skateboard.builders/t/the-is-my-math-right-thread/17037/70,2017-02-04 04:16:17 UTC