Torque

[johnyradio]

- At a given KV rating, will a motor with higher Watts have more torque?
- At a given watts rating, will a motor with lower KV's have more torque?
- Can we calculate KV from rpm and volts? Eg, 4900rpm/72V=68KV ?

 

[MaxHeadRoom78]

- Can we calculate KV from rpm and volts? Eg, 4900rpm/72V=68KV ?

NO,
For e.g. a DC brushed motor usually possess the highest torque at zero RPM
Also you appear to mixing up electrical and mechanical HP.

 

[throbscottle]

KV is BLDC terminology. Don't know if it makes more sense that way?

 

[MaxHeadRoom78]

KV is BLDC terminology.

????

 

[throbscottle]

Example: https://www.ebay.co.uk/itm/T-Motor-...670107?hash=item2ae9b660db:g:oLEAAOSwAX9e0Ncj
I did find out what the KV means a long time ago, but I've forgotten.

 

[MaxHeadRoom78]

Ah that is the misleading RC term, KV for Krpm/volt.
I assume that is where the OP is confused?
The word 'Servo' is often used for the RC context, which if not confirmed, can be confusing!

 

[throbscottle]

Quite possibly. The question obviously makes perfect sense to the OP!