Post by flydiver on May 27, 2013 17:45:22 GMT 1
You are correct. I'm not reading thoroughly this AM-need more coffee. 
What we are both trying to point out is as you say, 'prop for the motor, not the plane'. Newbies frequently don't understand that.
I've seen people get a 2200kv motor because it puts out lots of power when they read the specs (they don't really understand), put it on a stock brushed Slow Stick (small geared 350 motor running a 10x8 slow fly) and use that stock prop. They wonder why it burns up in about 10-15 seconds.
I have a buddy that is not too swift with the sticks or electronics. He breaks props a lot. So he ends up at the field out of the props that plane needs so he just mounts whatever he's got so he can fly. Half the time he is way underpowered (prop too small) and sometimes he burns up the motor (prop too large). After a LOT of lecturing he gets why, but he can't remember the particulars so he does it anyway. He's good natured about burning up motors though. He really needs to write the EXACT prop size on the plane and stick with it.
Even I do that. After you get a bunch of planes together its hard to remember which prop goes on what motor on which plane while you are at the field. I rewind motors so often what is written on them is not even remotely accurate for KV so I can't reliably use that to pick an appropriate prop.
What we are both trying to point out is as you say, 'prop for the motor, not the plane'. Newbies frequently don't understand that.
I've seen people get a 2200kv motor because it puts out lots of power when they read the specs (they don't really understand), put it on a stock brushed Slow Stick (small geared 350 motor running a 10x8 slow fly) and use that stock prop. They wonder why it burns up in about 10-15 seconds.
I have a buddy that is not too swift with the sticks or electronics. He breaks props a lot. So he ends up at the field out of the props that plane needs so he just mounts whatever he's got so he can fly. Half the time he is way underpowered (prop too small) and sometimes he burns up the motor (prop too large). After a LOT of lecturing he gets why, but he can't remember the particulars so he does it anyway. He's good natured about burning up motors though. He really needs to write the EXACT prop size on the plane and stick with it.
Even I do that. After you get a bunch of planes together its hard to remember which prop goes on what motor on which plane while you are at the field. I rewind motors so often what is written on them is not even remotely accurate for KV so I can't reliably use that to pick an appropriate prop.