<span style="font-size: medium">CONT:
</span>6. The best props for this motor seem to be the 5x3 and 6x3.<div style="margin-bottom: 0cm">Even with 2S LiPo, the GWS 5x3 prop produced 182g thrust for only 4.7A current. With 3S LiPo, it produced 334g thrust for 7.8A (and for 90W of input power)</div><div style="margin-bottom: 0cm">The GWS 6x3 prop on 2S LiPo produced 236g thrust for only 6.6A of drawn current (and for just ~50W of input power)</div><div style="margin-bottom: 0cm">Perhaps a prop like the small APC 4.5x4.1 might be useful for some people who want a very fast flying plane, because this prop produced a pitch speed of 48mph with 2S LiPo, and a pitch speed of 63mph with 3S LiPo. These were higher pitch speeds than obtained with any other prop.</div><div style="margin-bottom: 0cm">
7. Thrust values of 230g with 2S LiPo, and 330g with 3S LiPo, seem very impressive for a very little 17g motor like this Turnigy SK3 2118 2250kv.</div><div style="margin-bottom: 0cm">
8. A 16g / 17g motor like this might be used for some Indoor flying planes. In 2013, many indoor planes are typically 800 to 900mm wingspan, weigh 100g to 150g, use 2S LiPo and are usually made of 3mm styrofoam (e.g. Pauzuolis-RC, RC-Factory, Fancy Foam, TopModelCZ, and TechOne indoor aerobatic planes).</div><div style="margin-bottom: 0cm">The fact that this 17g Turnigy motor can generate ~240g thrust with a 6x3 prop (when driven by 2S LiPo) is certainly useful for a 125g indoor plane. However, many of these indoor aerobatic planes tend to use 7x3.8 props, up to 9x4.7 props, and this 2250 Kv motor is not suited to larger props like these. It would be better to use a motor with Kv ~1400 to 1600 for indoor aerobatics e.g. ePower X2203/1700; OverskyRC AP15 Kv 1510Kv; Axi 2203/52 Kv1525;Scorpion S-1804-1650 F3P motor; TIGER T2204 motor, Kv 1700;See: http://www.rcgroups.com/forums/showthread.php?t=1779737 &amp; http://www.rcgroups.com/forums/showthread.php?t=1322602</div><div style="margin-bottom: 0cm"> &amp; http://www.rcgroups.com/forums/showthread.php?t=882180</div><div style="margin-bottom: 0cm">
9. This Turnigy SK3 2118 2250kv motor, with relatively high Kv, is therefore probably better suited to small faster flying "Park Flyer" -type planes of between 120g to ~200g in weight e.g. the &ldquo;Mini VIPER Tomahawk&ldquo; plane - http://www.flymodelcomponents.it/sho...220&amp;page=1 (-this Viper-Tomahawk plane uses a HYPERION Z1705-11T 2250 KV motor, and this Turnigy SK3 2118 2250kv motor is identical, and is even produced in the same Sunray Technology factory as the Hyperion motor -seehttp://www.rcuniverse.com/forum/fb.asp?m=11426913 This Sunray Tech factoryalso makesHacker,E-F Torque,LiPolice, OK Hobby Infinite, Shulman Aviation FURY, Gens Ace,and many other brands of motor. All these motor brands have almost identical specifications...).</div><div style="margin-bottom: 0cm">
10. For testing of this motor, I have deliberately used 2S and 3S LiPo packs, to simulate what we all use in the real flying situation. The usefulness of these data, is that they show - using a given prop and given number of LiPo cells -what level of current and thrust we might expect with various combinations of props and LiPo packs.</div><div style="margin-bottom: 0cm">These data also show us what ESC should be used with this motor. Since this Turnigy SK3motor could generate up to 11 and 12A with larger props, it would seem that a 15A or 20A ESC might be the best option, especially if using larger props.</div><div style="margin-bottom: 0cm">
BEST PROPS FOR THIS Turnigy SK3 2118 2250kv MOTOR:</div><div style="margin-bottom: 0cm">a. GWS 5x3 on 2S LiPo</div><div style="margin-bottom: 0cm">b. GWS 6x3 on 2S LiPo.</div><div style="margin-bottom: 0cm">c. GWS 5x3 on 3S LiPo.</div><div style="margin-bottom: 0cm"></div>