ORIGINAL: suzonka I purchased a mystery 2212/15 930 kv motor
I went to 3 different sites to look up the specs on the motor; my findings were different here they are:
efficiency 12/60s capacity 28/60s peak 14/22
what can I really depend on when I check my amp draw at full throttle a static check with a 11x5 prop 3s 2200 lipo ?

ORIGINAL: DrMotor

Hello suzonka: I can answer this.
These ''Mystery 2212-15 930KV'' motors they are ALL: SUPPO A2212 / 15 motors.
There are HUNDREDS and hundreds of these motors on eBay, for instance -every one is a SUPPO A2212 / 15 motor

For PROPER, RELIABLE specs: See: http://www.suppomodel.com/ and http://www.altitudehobbies.com/brush...-suppo-2212-15
The motor has a 2212 stator (i.e. 22mm diam, 12mm length); 15 Turns (15T); Weight 47g; 930KV; Diam 27.5mm, Length 30mm, (28-30-external size);
It is rated for 4 - 10 A; Max current of 12 A for 60s; 2-3 LiPo; Has a claimed Efficiency of 80%;
Suppo suggest a Prop of 10''x5'' on 3S LiPo; and a Model weight: 300 - 800 g

From my measurements of similar 2213 motors (which have 2830 external dimension -same external size)
Using a 10x3.8 prop, on 3S LiPo, you can probably expect a peak current of ~14A to 17A and a Thrust of ~800g
Using a 11x3.8 prop, peak current of ~17A to 20A and Thrust of ~900g.
Your 11x5 prop will probably give at least 20A; May be best to use a 30A ESC ...

Hope this helps

ORIGINAL: suzonka: static test: GWS HD 11x5; 11 amps; on 3S LiPo ? GWS HD is stiffer than a flexible slow flyer prop, yet not stiff like an APC E.
... if I wanted to use APC E 10x5 prop it would pull more amps ??; or another GWS prop at maybe 12x6 HD size would also give me more thrust and more Amp draw. whats your opinion thanks again

ORIGINAL: DrMotor

suzonka: I have tested some GWS HD props on small motors, see: http://www.rcuniverse.com/forum/m_11463161/tm.htm
-and GWS HD props DO seem to draw less current and give more thrust, than say a GWS orange SF prop, or an APC SF prop.
Also see: http://www.rcgroups.com/forums/showthread.php?t=1584932

I would expect, that if you use an APC SF 11x5 prop, it would draw more current than the GWS HD.

I note that the Max current for this SUPPO A2212 / 15 motor is 12A;
-However, I have drawn 21A, 22A (for short periods) in 2830-size motors only rated for 16A max current; So you may be OK with a current larger than 12A for a short time.
TRY IT ! and tell us what you get ... BTW -was the 3S LiPo FULLY charged ...? Did it read 12.6V at first ...? (4.2V per cell, fully charged)

ORIGINAL: DrMotor

ABOUT ''MYSTERY'' MOTORS: see: http://www.rcuniverse.com/forum/fb.asp?m=11456017