BrotherHobby Speed Shield 2207.5 1750kv motors review
SpeedSheld is BrotherHobby new series of 2207.5 motors and I’ve had an opportunity to test the 1750kv version.
They can be purchased from GetFPV or local suppliers depending on availability.
Testing motor samples were supplied by Brother Hobby.
Speed Shield motors have one size – 2207.5 but they have quite few available KV options:
As you can see some of the KV options are a bit „extreme” 🙂 I have chosen 1750v „low KV” to test because I feel there is a hole in the market for that speck of motors, predominantly made for 6”or 7” cruisers but also for high voltage racers with 5” props. Unfortunately I don’t have such racing setup and I only checked the long range cruise option with those motors.
Speed Shield come with titanium alloy hollow shaft, Japanese NMB 9x4x4mm bearing, 7075 aluminium bell, N52H arc magnets, support 4-6S voltage and weight around 32g out of the box (around 29g with shorter wires).
At closer look
Motors are packed in the plain and simple box as any other BH motors I’ve seen.
From the first look they feel like a premium product. Finish and material quality is very good. They come with around 16cm of 20AWG wires. When spun by hand they are very smooth. The magent resistance is not as strong as previous returner R3 series though. Bearings are smooth and quiet. Shaft is held by a screw as opposed to C-clip still commonly used in motors.
What’s interesting with those motors is that the bell design is very different to any of the previous motors done by Brother Hobby – they are made to look like Captain’s America shield. Even colours are the same. Big plus for all the Marvel fans out there 🙂
Motor Testing and flight performance
I was extensively testing Speed Shields on my 7” cruiser:
- TBS Source One 7”
- KISS FC V1
- KISS 32A ESC
- TBS FPVision
- TBS GPS
- TBS Crossfire
- GoPro Session
- various 4S and 5S lipos
- Gemfan 7042 props (my personal favourites for 7”)
Prior to testing this motor I’ve had R3 2206 1720kv installed on this particular machine.
So what was the flight performance of this motor? What can I say – I really like it. It was smooth from the first second. No visible oscillations in FPV feed and GoPro footage was clear! That was really good bearing in mind that it was 7” quad and they are really hard to tune and to get satisfactory footage.
1750kv is a little bit higher KV for 7” meaning that it can make quad flying fast but at the cost of higher amperage. That was a case here. I was cruising at around 70-80km/h using around 13-15 amps on 4S. With 5S amps draped by around 3 and this is actually my recommended voltage but it didn’t feel slow with 4S either.
My quad felt very responsive and the overall flying experience was very pleasant. 7” machine is all about having good cruise without any of that freestyle nonsense moves and in my opinion SpeedShields can be used for that purpose without any issue.
My two flying videos:
Time to gather positives and things to improve about Speed Shields
Good things about Speed Shield motor:
- good build and materials quality
- reasonable price
- they are smooth!
- good performance on 7” with 1750kv
- interesting bell design with the Captains America shield
- no C-clip
Things to improve:
- can we get Iron Man bell design please? : )
BrotherHobby yet again came out with an interesting motor for mini quads. Good build quality with reasonable price plus smooth flying performance – that’s exactly what one would expect from a good motor.