{"id":4775,"date":"2026-06-25T14:06:27","date_gmt":"2026-06-25T06:06:27","guid":{"rendered":"https:\/\/pithrust.com\/?p=4775"},"modified":"2026-06-25T15:25:55","modified_gmt":"2026-06-25T07:25:55","slug":"4315-drone-motor-600kv-review-the-most-tested-mid-range-motor-for-surveying-and-security-uavs","status":"publish","type":"post","link":"https:\/\/pithrust.com\/en\/4315-drone-motor-600kv-review-the-most-tested-mid-range-motor-for-surveying-and-security-uavs\/","title":{"rendered":"4315 Drone Motor 600KV Review: The Most Tested Mid-Range Motor for FPV and Tactical UAVs"},"content":{"rendered":"\t\t
\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\r\n\r\n
\r\n\r\n

4315 Drone Motor Review: 600KV Performance Data for FPV and Tactical UAVs<\/h1>\r\n\r\n

The 4315 drone motor<\/strong> sits in a competitive spot \u2014 big enough for serious payload, small enough for a 7-inch FPV build. But the real question isn't what the spec sheet claims. It's what happens when you actually test it. To answer that, we ran the 4315-600KV through full 10-point throttle sweeps on both 6S and 8S with a 15-inch three-blade prop. In short, here's a review of what that data says, where this motor belongs, and where it doesn't.<\/p>\r\n\r\n

4315 Drone Motor \u2014 Specifications at a Glance<\/h2>\r\n\r\n

Before the numbers, here's what you're looking at on paper:<\/p>\r\n\r\n\r\n \r\n \r\n \r\n
Spec<\/th>\r\n Value<\/th>\r\n Notes<\/th>\r\n <\/tr>\r\n <\/thead>\r\n
Stator Size<\/td>43 \u00d7 15 mm<\/td>Same width as 4312 and 4320; mid stack height<\/td><\/tr>\r\n
KV Rating<\/td>600KV<\/td>\u00b110% custom winding available<\/td><\/tr>\r\n
Voltage Range<\/td>6S \u2013 8S (22.2V \u2013 29.6V)<\/td>Dual-voltage tested, unlike most 43mm motors<\/td><\/tr>\r\n
Weight<\/td>~210g<\/td>Lighter than 4320 (280g), heavier than 4312 (170g)<\/td><\/tr>\r\n
Peak Power (8S)<\/td>1,243W<\/td>42A at 29.6V<\/td><\/tr>\r\n
Bearing<\/td>NSK (Japan)<\/td>200+ hour tolerance; standard is 696ZZ at 80\u2013100h<\/td><\/tr>\r\n
Magnet<\/td>N52H Arc<\/td>120\u00b0C continuous thermal rating<\/td><\/tr>\r\n
Winding Wire<\/td>220\u00b0C rated<\/td>Vs 180\u00b0C in competing 43mm motors<\/td><\/tr>\r\n
Configuration<\/td>12N14P<\/td>Smooth torque across full throttle range<\/td><\/tr>\r\n
FOC Compatible<\/td>Yes (sensorless)<\/td>Bench-verified on Hobbywing XRotor, Aikon AK32<\/td><\/tr>\r\n <\/tbody>\r\n<\/table>\r\n\r\n

The 43\u00d715mm stator is what sets this 4315 brushless motor<\/strong> apart from its siblings. For reference, the 4312<\/a> uses a 12mm stack \u2014 more RPM, less torque. Meanwhile, the 4320<\/a> comes with a 20mm stack \u2014 more torque, more weight. Right in the middle, the 4315 splits the difference. On a hexacopter, six of these weigh 1,260g total \u2014 420g lighter<\/strong> than six 4320s before you even mount a battery. In other words, that's nearly half a kilo you can put toward a bigger camera or a larger pack.<\/p>\r\n\r\n

Thrust Test \u2014 How the 4315 Drone Motor Performs on 8S<\/h2>\r\n\r\n

This is the dataset most 4315 drone motor<\/strong> buyers ask about first. Static thrust stand, 8S (29.6V), 15\u00d77.3\u00d73 carbon fiber three-blade. Throttle stepped 20% to 100% in 10% increments, 30-second stabilization at each point:<\/p>\r\n\r\n\r\n \r\n \r\n \r\n
Throttle<\/th>\r\n Thrust (g)<\/th>\r\n Current (A)<\/th>\r\n Power (W)<\/th>\r\n Efficiency (g\/W)<\/th>\r\n <\/tr>\r\n <\/thead>\r\n
20%<\/td>980<\/td>6.0<\/td>178<\/td>5.51<\/td><\/tr>\r\n
30%<\/td>1,620<\/td>9.5<\/td>281<\/td>5.77<\/td><\/tr>\r\n
40%<\/td>2,400<\/td>13.2<\/td>391<\/td>6.14<\/td><\/tr>\r\n
50%<\/td>3,640<\/td>19.8<\/td>586<\/td>6.35<\/td><\/tr>\r\n
60%<\/td>4,600<\/td>26.0<\/td>770<\/td>5.97<\/td><\/tr>\r\n
70%<\/td>5,520<\/td>32.0<\/td>947<\/td>5.83<\/td><\/tr>\r\n
80%<\/td>6,350<\/td>37.0<\/td>1,095<\/td>5.80<\/td><\/tr>\r\n
90%<\/td>6,900<\/td>40.0<\/td>1,184<\/td>5.83<\/td><\/tr>\r\n
100%<\/td>7,297<\/td>42.0<\/td>1,243<\/td>5.87<\/td><\/tr>\r\n <\/tbody>\r\n<\/table>\r\n\r\n

Peak thrust is 7,297g at 100% throttle<\/strong>. The efficiency sweet spot is at 50% \u2014 3,640g of thrust pulling just 19.8A, which works out to 6.35 g\/W<\/strong>. That's where most well-loaded hexacopters hover. In practical terms, six motors at this point push 21,840g total thrust from roughly 3,516W.<\/p>\r\n\r\n

What stands out in the data is how flat the efficiency curve stays through the mid-range. 6.35 g\/W at 50%, 5.97 at 60%, still 5.83 at 70%. Most 600KV-class motors see a sharper drop between 50% and 70% because prop tips go transonic and waste power. By contrast, the 4315's torque curve keeps the blades working cleanly deeper into the throttle. As a result, you'll notice this in flight time, not on a spec sheet.<\/p>\r\n\r\n

6S vs 8S \u2014 Dual-Voltage Performance of This 600KV Motor<\/h2>\r\n\r\n

A dual voltage drone motor<\/strong> should have data to back up the claim. Most manufacturers give you one voltage and let you guess the other. Below is the side-by-side \u2014 same prop, same test stand, both sweeps:<\/p>\r\n\r\n\r\n \r\n \r\n \r\n
Metric<\/th>\r\n 6S (22.2V)<\/th>\r\n 8S (29.6V)<\/th>\r\n Delta<\/th>\r\n <\/tr>\r\n <\/thead>\r\n
Peak Thrust<\/td>6,422g<\/td>7,297g<\/td>8S +875g (13.6%)<\/td><\/tr>\r\n
Hover Efficiency (50%)<\/td>7.93 g\/W<\/td>6.35 g\/W<\/td>6S +24.9%<\/td><\/tr>\r\n
Hover Current \/ Motor<\/td>15.8A<\/td>19.8A<\/td>6S \u221225%<\/td><\/tr>\r\n
Total System Power (\u00d76)<\/td>~2,100W<\/td>~3,516W<\/td>6S \u221240%<\/td><\/tr>\r\n
Est. Endurance*<\/td>30\u201338 min<\/td>22\u201328 min<\/td>6S +6\u201310 min<\/td><\/tr>\r\n <\/tbody>\r\n<\/table>\r\n\r\n

*Estimated on equivalent energy capacity: 6S 12Ah \u2248 8S 9Ah, hexacopter at 5.5 kg MTOW.<\/p>\r\n\r\n

This 600KV motor review<\/strong> data confirms what the KV math predicts: more voltage means more thrust, but at the cost of efficiency. The gap at hover is significant \u2014 24.9% more thrust per watt on 6S<\/strong>. To put that in perspective, on 6S, your hexacopter draws 40% fewer total watts while producing enough thrust to keep a 5.5 kg platform airborne with margin. On 8S, however, you gain 875g peak thrust per motor \u2014 5.25 kg extra total \u2014 but you'll be swapping packs sooner.<\/p>\r\n\r\n

What the 4315 Drone Motor Does Well \u2014 and What It Doesn't<\/h2>\r\n\r\n

Strengths of the 4315-600KV<\/h3>\r\n\r\n