<span style="font-size: medium">HOW SIMILAR ARE HACKER AND TURNIGY SK3 MOTORS (and also HYPERION-Z motors) ?
</span>1. This is a further reason for performing these methodical, controlled tests of brushless motors.
There is a suspicion that many of the very best-known brands of brushless motors (like Hacker, Extreme Flight Torque, Hyperion-Z; and also
many other brands) may all be made together in the SunRay Technology factory in Shenzhen, China -see
http://www.rcuniverse.com/forum/m_11426913/tm.htm</p>
2. There is also the suspicion that all these motors may actually be
<span style="font-size: small">IDENTICAL</span> as far as all the internal working parts are concerned, and that the
ONLY difference between them is purely cosmetic e.g. a different outside colour, or slightly different style of the end housings.</p>
3. If all these 20 or 25 "typical SunRay brands" are, in fact, identical motors underneath the outer case, then of course they will give almost identical results when they are rigorously and systematically tested on the Test Stand, under the same conditions, and using the same props.</p>
4. In the tests in this particular thread, we will be comparing directly, under the same conditions:
<span style="font-size: small">Hacker A30-12L 1000Kv
Turnigy SK3 3542-1000Kv
HYPERION Z3019-12T 900 KV
</span> -These are all 12T motors with a 3020 stator, and all have a very similar weight of ~145g. The <span style="font-size: small">
reported</span> Kv for the Hyperion motor is 100 lower than for the other two, and this seems surprising given that they are all 12T motors. Our test of this Hyperion motor will reveal whether it the Kv really is 900, or whether it is actually closer to 1000 ...</p>
<u><span style="font-size: medium">BIG QUESTION:</span></u><span style="font-size: small"> </span>
<span style="font-size: small">HOW SIMILAR / IDENTICAL ARE: HACKER, TURNIGY SK3 & HYPERION-Z MOTORS ?</span></p>
<span style="font-size: medium"> -Well, lets find out ...</span></p>