Originally posted by bechs14
What about with a fan on. I'm not so sure about the glue but then again you are from overseas. They do some weird stuff over there. I'm not sure I agree with you though. I would have to say that a motor that runs at 10 amps at 2 volts seems to run a lot better than one that runs at 4 amps at 2 volts. Just a thought. Someone please explain without the sarcasim, as I am sure someone helped you when you were first starting out. You weren't an RC God overnight.
OK, sans sarcasm.
There is an impression that a motor that draw more amps under no load will be better on the track, and that tuning to get the most amps under no load is a "good" thing.
But consider what you're actually measuring here.
First of all, there's no load.
Consider the example of a Honda Civic and a Corvette at the stop lights (or traffic lights as us weird foreigners would call them).
Rev the cars up, and that Honda will scream away at 7,000rpm without hesitation, while the Corvette burbles at 5 or 6k.
Would you say the Civic is going to be faster? No, the true power comes into effect when you actually load up the engines by pushing the weight of the car, the Corvette will blow the Civic away (don't give me any of that "but if you had a Mugen head and pipe" rubbish).
Same with electric motors.
Revving them up under no load proves nothing.
Now I know amps drawn is more like fuel consumption than revs.
So lets look at it this way.
Lets assume an ideal world where the motor has no friction and no electrical losses.
Higher amps drawn by the motor at a certain voltage will mean higher power (P=IV, school physics).
But when you rev a motor at no load, it will go to it's maximum RPM for that voltage - but motors produce their maximum power at lower speeds (look at any dyno graph and you will see maximum power at about 2/3 revs).
So the amp reading you get is not the amps being drawn at maximum power.
And since motors are not ideal, friction and electrical losses can boost that amp draw, without actually improving performance.
Does that help?
PS I know what shouting is, the caps were deliberate, although I was not being fair to the poster and I apologise for that.