This is the next high performance motor from Emax in the from of the TS2306 2300kv. The performance and quality of the two existing RS motors is pushed even further in the TS series.
Check out the full list of motors in this series here
Summary
With the wild success of the RS line of motors, Emax has responded with a new iteration, the TS series of motors. This initial motor in the TS line offers answers to several issues that showed up later in the life of the RS line. In particular, it has a single piece machined 4mm internal, 5mm external steel shaft and a screw in the bottom rather than a clip to hold it in place. The stator size has also increased to 2306 and the windings have changed to thicker gauge single strand windings. The motor has the same quality machining and ridiculously tight tolerances of the RS series, but also boasts curved magnets. The airgap on this motor is the tightest I've ever seen. It is so close I'm not sure I could fit a hair between the two. The magnets here are so strong that when I pulled the bell off to check the stator size I almost couldn't get it off. I was blown away by the amount of force it took to remove the bell. I was pleasantly pleased by how the screw assembly worked. DYS seems to have epoxied the screw in place, but the screw here was held in by the usual blue lock-tight. It was in very securely but came out with a little elbow grease when I needed it to. As I've mentioned before, 4mm bearings are significantly smoother than even the best 3mm bearings, so that is another benefit here. My only real complaint is the weight, coming in at 34g, this beast is no lightweight. It is worth noting however that this is a fairly early prototype, and the Emax engineers are currently searching for a way to lighten the motor. Hopefully the final production version will be able to shed some weight. As with a few of the other recent motors I've been testing I've struggled with classifying this one. I'm starting to think we may need to start classifying motors by weight rather than by stator size and KV rating, as that seems to be a more significant measurement to me. The onset of stronger magnets and new manufacturing techniques as well as the move back to larger stator size has made direct KV comparisons difficult. All that being said, this is a killer motor if you can handle the weight!
Now on to the bench results!
Test Results
Once again Emax shows they know how to make a top performer. Unsurprisingly this motor sits right between the TMotor F60 2200kv and the 2450kv in terms of thrust and current draw. This puts it in a very good place for heavier 5" props and even light 6" props that are impractical on the F60 2450kv, but more punch than the relatively efficient 2200kv. Also interesting here the TS2306 puts out very close to the same thrust on 5x4x3 as the RS2205 2600kv, only falling about 60g short, but drawing close to 2.5A less current. Also the transition times and response are significantly faster across the board. One interesting thing I noticed with this motor is that the airgap is so tight it is actually temporarily magnetizing the stators. After my full heavy run the motor felt "sticky" even after I disconnected the ESC entirely. The magnetic resistance just from the stators was still quite strong. Overall this motor is an fantastic performer. If the engineers can manage to shave a few grams off, and if Emax offers a few additional KV (2150kv and 2500kv?) this TS series has some serious potential to keep the crown of top performer in Emax's court. I will be very curious to watch this line develop.
