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Nov 30, 2019, 05:00 PM
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RacerStar 1106 3800kv on the test stand


I did both 2s and 3s with the little 1106 3800kv ..

2s Test

65mm ( 2.5 Pitch ) - 37grams of thrust @ 0.84A @ 23100 rpm for 7.4 watt

3025 - 75 grams of thrust @ 1.84A @ 19540 rpm for 13.9 watt

3330 - 96 grams of thrust @ 2.5A @ 17000 rpm for 21.6 watt

3830 - 105 grams of thrust @ 2.7A @ 16700 rpm for 23 watt

3s Test

65mm Prop - 84 grams of thrust @ 1.74A @ 32700 rpm for 21.6 watt

3025 - 144 grams of thrust @ 3.2A @ 26400 rpm for 39.9 watt

3330 - 168 grams of thrust @ 4.4A @ 22800 rpm for 55 watt

3830 - 188 grams of thrust @ 4.7A @ 21000 rpm for 55 watt


Lets compare those figures to the 1106 6000kv tested previously ..


65mm Prop 2s

3800kv - 37 grams @ 0.86A @ 23000 rpm for 7.4 watt
6000kv - 87 grams @ 3.2A @ 33000 rpm

65mm Prop 3s

3800kv - 84 grams @ 1.74A @ 32700 rpm for 21.6 watt
6000kv - 100+ grams but could not sustain RPM over 35000 and shut down

3025 Prop 2s

3800kv - 75 grams @ 1.84A @ 19650 rpm for 13.9 watt
6000kv - 136 grams @ 5A @ 25000 rpm

3025 Prop 3s

3800kv - 144 grams @ 3.2A @ 26400 rpm for 39.9 watt
6000kv - 225 grams @ 9A @ 33600 rpm for 108 watt

The 6000kv motor got seriously hot with the larger props on the 2s battery , so no real meaningful data to share .

Loos like that 3800kv motor wants more voltage ( 4s possibly ) .
Or perhaps I just got a low power sample ? ( Be nice to have a larger sample lot but $$$$ )
But those figures are some what comparable to the 1104 4000kv motor ..

1104 4000kv

2s Battery

3025 - 69 grams of thrust / 19,100 rpm / 1.69A / 13.9 watt
333E - 86 grams of thrust / 16,500 rpm / 2.44A / 19.2 watt
383E - 96 grams of thrust / 15,300 rpm / 2.5A / 21.6 watt

3s Battery

383E - 140+ grams of thrust / 19,000+ rpm / 4A+ / 49 watt ( Ran HOT )
333E - 140 grams of thrust / 20,700 rpm / 4.1A / 46 watt ( Did not run HOT )
3025 - 129 grams of thrust / 25,000 rpm / 3A / 36.5 watt
65mm - 80 grams of thrust / 32,000 rpm / 1.69A / 20.7 watt



So we may have some meaningful data comparing KV ...
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