Worth noting these comments:

http://www.rcgroups.com/forums/showt...696&page=4
Dr Kiwi: " ... P.S. I would hazard a guess and say that the Turnigy (SK3) and the Infinite are from exactly the same factory... their appearance down to the last detail (other than the stick-on label) was the same, their Kv's were the same, and their performances were essentially identical! ..."
-This evidence shows: The Turnigy SK3 2118-2250 (17g, ~2340Kv) is an identical motor to the OK Hobby Infinite A1705-2250 (17g, ~2340Kv)</p>

Also: Dr Kiwi states: " ... The Turnigy SK3 2118-2250 (17g, ~2340Kv) seems to have similar performance to the Hyperion Z1705-11 (18g, ~2300Kv) ..."
-He also showed that the Hyperion Z1705 had identical appearance to Infinite 1705 (see below) and to Turnigy SK3 2118.

Consistent with, as we have stated above:
<span style="font-size: small">HYPERION Z1705-11T 2250 KV, 17g =OK HobbyInfinite A1705-2250, 11T, 17g =Turnigy SK3 2118-2250kv, 11T, 17g</span>
-i.e. They are all the same motor, and produced by the same factory


Pic shows OK Hobby Infinite A1705 motor, compared to Hyperion Z1705 motor, also by Dr Kiwi
http://www.rcgroups.com/forums/showthread.php?t=1334240
-Dr Kiwi found that not only the performance of these 1705 motors was identical, their appearance was also identical (as can be seen)</p>