<span style="font-size: medium">HEAD-TO-HEAD COMPARISON OF:
Hacker A30-12L, 1000Kv
Turnigy 3542-1000Kv (12T)
HYPERION Z3019-12T, 900Kv

<u><span style="font-size: small">WHY</span></u><span style="font-size: small"> AM I MAKING PERFORMANCE TESTS OF THESE BRUSHLESS MOTORS ?</span>
</span>Why am I performing these systematic and rigorous Performance Tests of 150g, "30-size" brushless motors ?
There are a number of reasons:</p>

1. I am a Scientist and a Physician. I have published more than 200 papers in medical research. I really enjoy measuring things properly, and performing proper, precise and reliable tests.</p>

2. There have so far been NO published controlled and precise tests of the Hacker A30-12L motor -certainly ones that I am aware of. -And this is despite the fact that this Hacker A30 motor has been around for at least 8 or 9 years -and maybe longer.
<span style="font-size: x-small">So:</span><span style="font-size: small">This is the <u>FIRST</u> rigorous and methodical (independent) test of the Hacker A30-12L motor </span>that has been performed -or least that has been published.</p>

3. The Turnigy <span style="font-size: small">"SK3"</span> motors have been around for about 1 to 2 years now. They are the best quality of all the motors that HobbyKing sell. They seem quite a bit better than the Turnigy"AerodriveXp SK" motors (-the ones with black can and silver end housings) that HobbyKing sold until 1 to 2 years ago.
Certainly, there has so far been NO systematic, precise test of the relatively new Turnigy SK3 3542-1000Kv motor -at least not one that has been published, and that I am aware of.
So: <span style="font-size: small">This is also the <u>FIRST</u> rigorous test of the Turnigy 3542-1000Kv motor that has ever been performed.</span></p>

4. Dr Kiwi (i.e. Dr Phil M) is very well known in our hobby for having made precise and systematic tests of a huge number of brushless motors over the last 8 or 9 years
see: http://www.geocities.ws/dr.kiwitn/ His record is incredibly impressive, and he has given a great deal of advice about best use of brushless motors, to many people over the years. However, his motor test stand is limited to motors of ~100g weight, and is suitable only for motors which generate up to about 1.5kg of Thrust.
-So Dr Kiwi has so far not been able to test motors like these 150g "30-size" motors, that can generate up to 3kg thrust, with 4S LiPo.</p>

5. The Motor Test Stand I have built (see pic in next post) is made of metal (aluminium L-shape pieces) and is strong enough to take up to at least 600g weight "60-size" motors. It can measure up to 20kg of thrust. It can take props up to 28" diameter.</p>

6. I showin this thread,Performance Tests of the very commonly used "30-size" motors, such as the Hacker A30-12L (1000Kv) , Turnigy 3542-1000Kv motor and the HYPERION Z3019-12T motor. All these 3 motors have a 3020 stator, all are 12 Turn (12T), and all have a quoted weight ~145g.
In later threads (to be published over next several weeks/months) I will also show systematic Performance Tests of the following:
-Several 20g / 25g "10-size" or "2122-size" motors -(1709 stator) -like the Hacker A10 L and the Turnigy SK3 2122 motors.
-Several 55g "20-size" or "2830-size" motors (2213 stator) -like the Hacker A20 L, and the Turnigy SK3 2830 motors.
-Several 175g "30XL-size" or "3548-size" motors (sometimes called "3748") (they have 3025 stator) -like the Hacker A30 XL and Turnigy SK3 3548 motors.
-Several 350g motors, or "5055-size" motors (4025 stator) -like the Hacker A50 L and HYPERION Z4025 motors.
Finally: Several ~550g motors, or "6354" motors (5025 stator) -like the Hacker A60 S, HYPERION Z5025, and Turnigy SK3 6354 motors</p>

<span style="font-size: small"> -I may also, in time, test many more motors than this ... <span style="font-size: x-small">but this listis good for astart ...

</span><span style="font-size: medium">Lets move on ...</span></span></p>