fast shallow-pitch props, or slow steeper-pitch props?

[Biggerhammer]

I'm planning (aka daydreaming) my first multicopter. I'm new to RC aircraft but have reasonable experience with RC cars and some with robots. The vehicle will be a hex which will carry a decent camera when I can afford one, so stability is more important than speed or nimbleness.

My understanding is that folks choose a motor and rotor combination based on their desired lifting power and flying style. One can use an 880KV with a 10x4.7 or a 1250kv with a 10x3.5 (all these numbers are ex ano not real- just used for examples).

I assume that one could graph out the lifting power of various props at various speeds, and that a shallower-pitch prop at speed X would produce the same lift as a steeper-pitch prop at speed Y.

So, is it better to have faster motors, or slower ones?

Thank you for your help. Please vote in the poll and let me know why you prefer your choice.

 

[Breezemont]

Diameter = torque, pitch = airspeed.
Too much of either will draw too many amps, but too much pitch is inefficient and the props can actually cavitate.
Torque is what you want in a multi unless you like flying really fast.
Lower kv motors allow for larger diameter props, and allow for a finer level of throttle control because the steps are closer together.

Read this thread for all you ever wanted to know about multicopters.

 

[Biggerhammer]

Read this thread for all you ever wanted to know about multicopters.

I'm reading the thread- thank you for the link!