Racerstar BR2406S Fire Edition 2300/2600KV & BR2307S Fire Edition 2200/2500KV - RC Groups
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Oct 25, 2017, 04:45 AM
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Racerstar BR2406S Fire Edition 2300/2600KV & BR2307S Fire Edition 2200/2500KV


Racerstar BR2406S Fire Edition 2300KV (Red): https://www.banggood.com/Racerstar-2406-BR2406S-Fire-Edition-2300KV-2-5S-Brushless-Motor-For-X220-250-280-300-Racing-Drone-p-1216813.html
Racerstar BR2406S Fire Edition 2600KV (Red): https://www.banggood.com/Racerstar-2406-BR2406S-Fire-Edition-2600KV-2-4S-Brushless-Motor-For-X220-250-280-300-Racing-Drone-p-1216810.html
Racerstar BR2406S Fire Edition 2300KV (Green):https://www.banggood.com/Racerstar-2406-BR2406S-Green-Edition-2300KV-2-5S-Brushless-Motor-For-X220-250-280-300-Racing-Drone-p-1216830.html
Racerstar BR2406S Fire Edition 2600KV (Green):https://www.banggood.com/Racerstar-2406-BR2406S-Green-Edition-2600KV-2-4S-Brushless-Motor-For-X220-250-280-300-Racing-Drone-p-1216819.html
Racerstar BR2307S Fire Edition 2200KV (Red):https://www.banggood.com/Racerstar-2307-BR2307S-Fire-Edition-2200KV-2-5S-Brushless-Motor-For-X220-250-280-300-Racing-Drone-p-1216835.html
Racerstar BR2307S Fire Edition 2500KV (Red):https://www.banggood.com/Racerstar-2307-BR2307S-Fire-Edition-2500KV-2-4S-Brushless-Motor-For-X220-250-280-300-Racing-Drone-p-1216839.html
Racerstar BR2307S Fire Edition 2200KV (Green):https://www.banggood.com/Racerstar-2307-BR2307S-Green-Edition-2200KV-2-5S-Brushless-Motor-For-X220-250-280-300-Racing-Drone-p-1216832.html
Racerstar BR2307S Fire Edition 2500KV (Green):https://www.banggood.com/Racerstar-2406-BR2406S-Green-Edition-2600KV-2-4S-Brushless-Motor-For-X220-250-280-300-Racing-Drone-p-1216819.html






Description:
Brand: Racerstar
Item name: Fire Edition BR2406S 2300KV motor
RPM/V: 2300KV
Height: 33mm
Width: 29.6mm
Shaft diameter: M5
Motor mount hole size: M3
Screw thread: clockwise (CW)
Weight: 35 grams
Voltage: 2-5S
Battery: 2-5S lipo battery

Features:
Stainless steel motor shaft
Long life Japanese NMB ball bearings
Oxygen free copper wire
CNC machined aluminum case
Last edited by D Gains; Oct 25, 2017 at 05:29 AM.
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Oct 26, 2017, 04:29 AM
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Already ordered six 2307 2500kv to try them.
Banggood thrust tests are always off, but supposing they are performed in the same conditions and the construction is the same, comparing 2406 2600kv and 2307 2500kv, the first appears more powerful by a good margin while they should be approximately the same (4% more kv and 4% more diameter but 7% less stator volume)

So my guess is that the KV values are a bit off. And comparing with 2306 the one off should be the 2406, i bet is higher than 2600kv.

Based on these hypotesis i choose the 2307 2500kv.

I'll measure the kv on my 2307 once arrives with drill press method.
Oct 27, 2017, 05:14 PM
☢ Self-Proclaimed n00b FPVer ☢
EngineerX's Avatar
Quote:
Originally Posted by nasone32
Already ordered six 2307 2500kv to try them.
Banggood thrust tests are always off, but supposing they are performed in the same conditions and the construction is the same, comparing 2406 2600kv and 2307 2500kv, the first appears more powerful by a good margin while they should be approximately the same (4% more kv and 4% more diameter but 7% less stator volume)

So my guess is that the KV values are a bit off. And comparing with 2306 the one off should be the 2406, i bet is higher than 2600kv.

Based on these hypotesis i choose the 2307 2500kv.

I'll measure the kv on my 2307 once arrives with drill press method.
I ordered one each 2307 2500kv & 2406 2600kv , free shipping so it'll be a good 3 weeks for delivery..... I'll run the usual test on those, it's going to be interesting to see how they do.
Nov 02, 2017, 01:44 PM
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Anarpi's Avatar
I think 2406 2300kV would be great when paired with some S5048, on the banggood chart they look way better than the previous 2306
Nov 08, 2017, 11:28 AM
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My 2307 2500 arrived here. Cannot comment on performance because i'm away from home. But bearings are ok, I can confirm the weight of 36g with 7cm of wires and the alu propnut.

Only complaint, 7cm of wires is short. They sell them also as a kit with 4in1 esc wich makes me laugh a bit.

6 out of 6 are ok. Typical racerstar quality. No play on the bell (!), a bit wide airgap than usual on top motors, windings are typical machine filled multistrand.
They are for a rig I need to test some frames on, so good enough for me.

Probably tons of power because of the big size if you don't mind the weight.

They have more cogging than br2306s, which means nothing and normal for this size, but at least the magnets are not absolute trash.

Let's wait engineeerx for thrust tests now
Last edited by nasone32; Nov 08, 2017 at 12:18 PM.
Nov 10, 2017, 11:02 AM
Registered User
Just ordered a 4 pack of the 2406 2300kvs. I don't have a thrust stand to measure output, but I have another quad running some racerstar 2205 2300's, which should make for a good comparison.

Gonna run them on 3s first. Gotta order some 4s 70cs before I can run them really hard.
Nov 12, 2017, 03:43 PM
Registered User
I have got the 2307 2500KV two days ago and had some time this weekend to test them. They seem smooth and quiet. They really open up and show full potential above 60-65% throttle. It seems that these motors have a lot of power and accelerate really fast.

Here is my review
And here is dvr flight video

I have also ordered the 2406 2600KV but I haven't got them yet. I will be doing similar review on them as soon as I get them.
Unfortunately I have no equipment for more thorough tests and I would be glad if EngeneerX and MQTB test these so we could have some better insight.
Last edited by akolov; Nov 12, 2017 at 03:49 PM.
Nov 17, 2017, 01:52 PM
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Anarpi's Avatar
Nice review man, as you posted that guy on Youtube has thrust data of several of the new racerstars

2307S 2200kV
Тест мотора Racerstar BR2307S 2200KV замеры тяги (5 min 32 sec)

2307S 2500kV
Тест мотора Racerstar BR2307S 2500KV замеры тяги (3 min 13 sec)


2406S 2300kV
Тест мотора Racerstar BR2406S 2300KV замеры тяги (5 min 0 sec)

2406S 2600kV
Тест мотора Racerstar BR2406S 2600KV замеры тяги (3 min 24 sec)


It looks like 2307s 2500kV are the more powerfull of those, i just wish they could test them with racerstar props :P like 5040*4 and the 5048*3 boomerang shape
Nov 17, 2017, 02:16 PM
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Anarpi's Avatar
Was checking again, it seems the old 2306S 2700kV is better option power wise, the 2307s does arround 100-200gr less of thrust and like 4-5amp draw less, still pretty good option if they fixed the magnet slip thing
Nov 17, 2017, 08:14 PM
Registered User
you are not comparing numbers on the same thrust stand and test conditions... the racerstar 2307 2500kv performs very similar to (but less powerful then) the cobra vek 2207 2450kv, the russian guy tested both. and he tested also the aokfly 2306 2650kv.

so for now br2307 2500kv > br2306 2700kv for both thrust and amps.

they also weight the same as the cobras but with a 4mm steel shaft, for 8€, it's a win-win for now.

anyway i'm waiting engineerx for tests in a more controlled and accurate environment.

also from the tests looks like the KV on the 2406 is way lower than stated. you see it on the 4 inch props.
Last edited by nasone32; Nov 17, 2017 at 08:52 PM.
Nov 18, 2017, 02:14 AM
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Anarpi's Avatar
Oh yeah, it had to be the same test conditions to be a reliable comparison, i fell like i will get the 2307 2200kV for a freestyle build that lost the motors, too bad it has 28A escs, i guess they will be overkill for those motors
Nov 18, 2017, 10:30 AM
Registered User
I was tuning mine with the split2 onboard, so I recorded a video. beware raw audio.
br2307 2500kv + racekraft 5051
I also overlayed blackbox, very clean gyro signal.

also sorry for the video compression, doesn't give justice to the split2

(RAW sound!) 2nd tune test - br2307 2500kv rk5051 escprototype30A iflight ix5 split2 4s1300 (1 min 48 sec)
Last edited by nasone32; Nov 18, 2017 at 10:59 AM.
Dec 07, 2017, 03:51 PM
Registered User
Hi guys, what would you recommend for esc's on the 2307s 2500kv? Would 30amps be enough?
Dec 07, 2017, 06:48 PM
Registered User
yes 30A is okay.
Dec 14, 2017, 02:23 AM
Registered User
Anarpi's Avatar
i just love the 28A racerstars, you can even get them cheaper by the piece on gearbest


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