It should be KV times Volts to get top speed(RPM) of a given motor. You'd only divide it if you had the RPM value and the voltage and needed the KV rating. But the KV rating is how many RPM's each volt produces so it IS RPM per Volt but not usually expressed as "rpm/volt" as that is perceived as "RPM divided by volts"...

Does that make sense?

Well, not to a scientist:

Key is, you have to read rpm/volt as rpm PER volt:

so 200 Kv is 200 rpm per 1 volt

**200 rpm/ 1 volt**
or

**400rpm per 2 volt** ect

Note that 200 rpm / 1 volt is exactly the same as 400 rpm / 2 volt namely:

200 Kv = 200 rpm / volt

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Think about it, it matches...

If rpm equals Kv * Volts (which is correct and to which you approve), then obviously Kv should be expressed as rpm / Volt ....

That's how it works (IMHO) ..

In theory:

I get 750 rpm If I give 1 Volt to a DT750

I get 1500 rpm If I give 2 Volt to a DT750

....

I get 8325 rpm If i give 11.1 Volt to a DT 750

In other words I get 750 Kv (= 750 / 1.0 Volt) for each Volt I give to a DT750...

So you have to multiply the Kv with each Volt you give to your motor, to get the rpm, making the unit of measure rpm/Volt.

Do the calc with the fuel consumption of your car, mile to the gallon, which scientifically is also expressed mile/gallon (mile per gallon) like rpm/volt (rpm per volt)

You'd also multiply the mile/gallon with the amount of gallons consumed to get the number of miles you've travelled, just as you'd multiply the number of Kv's with the voltage to get the rpm's you've reached

Well, that is my take on it ..