We recently received a set of these SE2008 2550KV motors from DYS. What’s interesting is the smaller stator diameter of 20mm instead of the common 22mm. I also run it on my thrust stand to see what size propellers perform well.
Spec of SE2008 2550KV motor
The motors come in pair in a plastic box, along with some mounting screws, nylon nuts for propellers, and a M5 wrench for them.
- Stator diameter: 20mm
- Stator height: 8mm
- Motor Dimensions: 25.5 × 20mm
- Weight: 32.8g (including wires)
- Poles 12N 14P
- KV: 2550KV
Find out what these motor numbers mean.
The motor looks a bit smaller than the 2205 motors we normally use (in picture we are comparing the EMAX RS2205).
Build quality is excellent. Shaft is fixed with a hex screw is like it’s brother SE2205, instead of C-clip.
And its hollow shaft.
Stator Diameter/Height and Power
Although the SE2008 has smaller diameter, but it weights heavy than I thought at nearly 33g each. Not lighter than most 2205 class motors, and the weight mainly comes from the added motor height I would assume.
Increase in motor/stator width or height, means increase in torque and power, so this motor can actually match the performance of 2205/2206 size motors. But this also brings up an interesting discussion: Does increase in motor width or height give more torque/power?
Test was done with the following setup:
- Voltage: 4S – 16.2V
- ESC: DYS XS30A ESC
|Props||%||Peak Thrust – g||Peak Current – A||Max Power – W||Efficiency – g/W|
|GF 5045 HBN||50||379||7.0||113.4||3.34|
From the thrust test, it seems to have less power than the Tornado T1 2205 we reviewed previously (it’s 2600KV after all), but being a lot more efficient. 5″ propellers seem to work best especially 5045 triblades. It also seems to be able to deliver enough torque to swing heavy propellers like the 6040, giving an impressive 1.4Kg. But I would not use this on a 180 running 4″ props. It just doesn’t make sense to use hevay, 33g motor on them.