Testing made possible by generous support from:


DYS Samguk SHU 2306 2800kv
 Full Results  [CLICK HERE]

 

The first in a new budget line of larger stator motors from DYS.

Check out the full list of motors in this series here

Summary

Published: Apr 16, 2018

DYS Samguk SHU 2306 2800kv<br />

Tested KV:2870kv
Weight:33.4g
Stator W:23mm
Stator H:6mm
This motor is the latest update from DYS in their mini-quad racing line-up, and is designed to bring a higher level of performance to the budget market. This motor has most of what we expect from recent designs: a low profile bell, open-bottom design, and 16x16 motor mounts. This version does have thinner multistrand windings and there appear to be two versions of the motor on the market, one with a single piece steel shaft, and one that has an aluminum prop adapter integrated to the bell with a 3mm solid steel shaft running the length of the adapter.  The model I recieved for testing is the single piece shaft, but it appears both motors have a circ-clip to retain the shaft, and a 3mm internal shaft diameter. For the price-point of this motor, the build and finish quality is quite impressive, on par with most of the other motors on the market that fall into more expensive price categories. The air gap between the stators and magnets is fairly conservative, larger than some of the high performance motors on the market, and the magnets are narrower and thinner square magnets rather than arc. The motor comes in at a decent 31.0g for a 2306, though the integrated shaft version may be somewhat lighter.

Results

From the results here it is pretty clear that this motor is using slightly weaker magnets and making up for it in Kv. The Kv tested a bit higher than stated, coming in at 2870kv.  You can see in the results the strong low RPM acceleration due to the high Kv, but the top end flattens out significantly due to the weaker magnets and resulting lower torque. Even so, the higher Kv pushes this motor to some fairly decent numbers, reaching 1400g even on the lightest props tested. As we go up in torque loading though, the numbers don't get a lot higher, and current draw starts rising quite a bit as the motor struggles with the increased torque requirements. The rate of change for RPMs on this motor was also slower as a result of the lower torque. The performance through the range of props tested is fairly flat compared to higher torque motors, showing only about 150g difference between the lightest and heaviest props, but about a 10A difference in current.  Given all those constraints, this motor is likely to perform best on dual blade or very light tri-blade props that can take advantage of the high Kv without overloading the motor.  The prop that stands out here is the HQ v1s triblade, hitting almost 1500g of thrust with a very reasonable 37A peak draw at the top end, and showing the best change of RPM rates for this motor.  Given the low price point and the correct prop combination, this is a compelling economy motor for introductory racing and freestyle.