This Tornado T1 is the first of the new series of motors from BrotherHobby that were sent over for testing. A high KV version as well as several other stator sizes should be hitting the bench soon as well.
BrotherHobby has traditionally been known as the assembly plant for many of the motors that have hit the bench here, but this motor is their first major step into the hobby on their own. Turns out this is quite an interesting step! There's a lot of things about this design that are unique. The bell design in particular is a totally new take, and is a very interesting aesthetic. Build quality on these motors is fantastic, and machining is very clean. There are some machining lines visible on the vertical blades, but that is to be expected with that type of CNC work. These are very solid, made from 7075 aluminum, and surprisingly light, coming in right at 27g. The weight is a surprise given the fact that they're using 2mm thick N52H arc magnets. Some very nice work by the engineers here to get the weight down while keeping structrual integrity. Tolerances are very tight on these and the windings are thick gauge wire and very nicely wound. The bells are all dynamically balanced as well. The bearings are smooth and the motors feel great in the hand. Overall, an excellent first offering from a company that has traditionally moved behind the scenes.
Now on to the bench results!
The most intresting thing to note here is that as a result of the very strong magnets used, the KV on these is a bit lower some of the other competitors in this space, coming in closer to the 2270kv of the Emax RS2205 than the 2360kv of the Gemfan RT2205. The results bear this out by coming in a bit less thrust and a bit less current than that Gemfan RT motor. However, the weight reduction of the T1 over the RT motor and the faster response times of the larger magnets and lighter bell will likely give the T1 the advantage in the air. The T1 really excells on heavier props, giving excellent thrust and saving 1-2A of current over some of the punchy competitors. Overall this motor performed extremely well, giving excellent response and good power while staying fairly efficient.