BrotherHobby Returner 1402-8100KV & 9500KV Brushless Motors-Interesting New Sizes - RC Groups
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Oct 16, 2017, 01:50 PM
☢ Self-Proclaimed n00b FPVer ☢
EngineerX's Avatar
New Product

BrotherHobby Returner 1402-8100KV & 9500KV Brushless Motors-Interesting New Sizes


I will soon be running thrust tests on these motors sent in by BrotherHobby. It seems these are aimed at super-micro frames on 2" props (or similar?). It's going to be interesting to see what configurations on your builds you guys come up with and how these tiny new motors perform as far as flight times and flight characteristics. Recently, we only had (for the most part) 1104 to 1106 motors. There have been several new offerings for this class size and now other micro size motors coming out from other manufacturers such as 1404, 1107, 1108. The flight performance of these micro builds has improved quite a bit with the miniaturization and introduction of FC's and FPV components.

Thrust tests & motor overview coming soon

https://www.banggood.com/Brotherhobby-Returner-1402-8100KV-9500KV-1-2S-FPV-Racing-Drone-Brushless-Motor-p-1212604.html?p=FR3104108021201212@4





Last edited by EngineerX; Oct 16, 2017 at 01:58 PM.
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Oct 16, 2017, 01:51 PM
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Thrust Tests & overview Video


8100KV

Brotherhobby R3 1402-8100KV Thrust Tests & Overview. (17 min 33 sec)
Last edited by EngineerX; Nov 07, 2017 at 01:02 PM.
Oct 16, 2017, 02:34 PM
IKNOWNOTHING
can't wait to see how these perform, but would love to see a 5-6000kv version to run 3" on 3s.
Oct 16, 2017, 06:07 PM
I just wanna fly, fly, fly
Brainstorm's Avatar
EngineerX: My guess is that these are targeted at the 2.5"/2S MultiGP Micro brushless racing class. The 1102 do fine with RX2535 quad- and dual-blades. So I would guess these 1402 will do fine with 2.5" quad-blade and 3" dual-blade props.

I personally think the 14mm diameter stator would be wasted on short 2" props. But I'm sure people will do it anyway.
Oct 17, 2017, 01:52 PM
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EngineerX's Avatar
Quote:
Originally Posted by Brainstorm
EngineerX: My guess is that these are targeted at the 2.5"/2S MultiGP Micro brushless racing class. The 1102 do fine with RX2535 quad- and dual-blades. So I would guess these 1402 will do fine with 2.5" quad-blade and 3" dual-blade props.

I personally think the 14mm diameter stator would be wasted on short 2" props. But I'm sure people will do it anyway.
Very good info that will help me cover what these are intended for- thanks !
I will certainly include those props.

Quote:
Originally Posted by estho
can't wait to see how these perform, but would love to see a 5-6000kv version to run 3" on 3s.
That was my thinking, so they can comfortably run on 3S, given that the 1106-6000KV run very well on 3S. Maybe BHobby will release that KV version in the future.
Oct 17, 2017, 06:15 PM
I just wanna fly, fly, fly
Brainstorm's Avatar
Quote:
Originally Posted by EngineerX
Very good info that will help me cover what these are intended for- thanks !
I will certainly include those props.
Thanks! Actually, I think it would be worthwhile to include some 3" tri-blades as well, e.g. GF3035 (tri-blade version of GF3025). My suspicion is that with 14mm stator diameter for torque, these motors might just be able to handle them.
Oct 18, 2017, 01:36 PM
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Quote:
Originally Posted by Brainstorm
Thanks! Actually, I think it would be worthwhile to include some 3" tri-blades as well, e.g. GF3035 (tri-blade version of GF3025). My suspicion is that with 14mm stator diameter for torque, these motors might just be able to handle them.
I'll give them a try -at the end of the tests, hopefully they don't overwhelm the windings and the let out the magic smoke
Oct 18, 2017, 03:01 PM
I just wanna fly, fly, fly
Brainstorm's Avatar
LOL! Save the magic smoke!

Or maybe it should be: Keep that magic smoke locked up!
Oct 28, 2017, 06:54 AM
Brisbane, Australia
If you are looking for prop suggestions EngineerX, it would be nice to see some of these props tested on 2S if possible - RotorX 2535 and GF3035 triples (as suggested by Brainstorm), DYS3045, RotorX 3044TX, KingKong 2840 triples, Racerstar 2435 Pro, HQ3030, GF3025 and 3020's.

It looks like Dirkdigla666 has tested some motors on a quad and the 8100Kv motors are running cool on 3S and GF3025 if I read it right.

There could likely be some 1S interest in the 9500Kv motor too, due to the very low weight and high Kv (and being advertised as 1S-2S). I for one would be very curious to see what it can do on 1S with say a GF3025.
Last edited by Ian444; Oct 28, 2017 at 07:28 AM. Reason: added another prop
Oct 28, 2017, 02:03 PM
I just wanna fly, fly, fly
Brainstorm's Avatar
Quote:
Originally Posted by EngineerX
I'll give them a try -at the end of the tests, hopefully they don't overwhelm the windings and the let out the magic smoke
EngineerX: Thought about the GF3035 tri-blades again. While 3S might be borderline, they should be just fine on 2S. Definitely don't want you to release magic smoke until you've covered all the other testing scenarios.

Quote:
Originally Posted by Ian444
If you are looking for prop suggestions EngineerX, it would be nice to see some of these props tested on 2S if possible - RotorX 2535 and GF3035 triples (as suggested by Brainstorm), DYS3045, RotorX 3044TX, KingKong 2840 triples, Racerstar 2435 Pro, HQ3030, GF3025 and 3020's.
Second Ian444's suggestion to test extensively on 2S. Light weight of 2S packs might help these 1402 motors shine.

Quote:
It looks like Dirkdigla666 has tested some motors on a quad and the 8100Kv motors are running cool on 3S and GF3025 if I read it right.
Excellent find, Ian!

It does look like he's done successful flight testing on 3S with GF3025 dual-blades. Although it sounds like his build has fairly low AUW, so may not be representative of average builder. I really think 2S will be the way to go with these relatively high-KV 8100 and 9500KV versions, with 3S being more like nitrous (and say a prayer).

This early positive feedback from Dirkdigla makes me even more excited about EngineerX's upcoming tests!

Quote:
There could likely be some 1S interest in the 9500Kv motor too, due to the very low weight and high Kv (and being advertised as 1S-2S). I for one would be very curious to see what it can do on 1S with say a GF3025.
Another excellent suggestion!

The 9500KV version on 1S with GF3025 dual-blades has the potential to make a highly efficient long-range cruiser/explorer. I wouldn't be surprised if even the 8100KV version did well on 1S. Definitely worth a bench test, if 1S is an option with your power supply and testing setup.
Last edited by Brainstorm; Oct 28, 2017 at 02:31 PM.
Oct 29, 2017, 07:56 PM
run
run
Registered User
run's Avatar
Quote:
Originally Posted by Brainstorm
EngineerX: My guess is that these are targeted at the 2.5"/2S MultiGP Micro brushless racing class. The 1102 do fine with RX2535 quad- and dual-blades. So I would guess these 1402 will do fine with 2.5" quad-blade and 3" dual-blade props.

I personally think the 14mm diameter stator would be wasted on short 2" props. But I'm sure people will do it anyway.
I dunno about this assertion. From the thrust tests I've seen on 1103 and 1102's they have a really hard time with 2.5" multibladed props. They might not smoke, but they often produce no extra thrust with extra blades - only taking a major hit in efficiency.

FlexRC did some testing on this a while back: https://flexrc.com/2016/10/24/how-pr...nd-efficiency/

I think even 1104's (*cough* which seem to always be 1105's) struggle to produce power efficiently with 2.5" quad blades.

Honestly, I'm not sure what the point of this objection was I still agree that this is probably squarely targeted at 2.5"/2s multiGP and I'm definitely standing by greatly interested in the results of 1s/2s 2.5/3" testing!
Nov 03, 2017, 03:27 PM
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Dirkdigla666's Avatar
These are the most efficient motors I've even flown for sure.
Also have no problem with 3035 rotorx or 3044tx triple props though the 3s 650mah 7tc tattu has a problem with the 3044tx.
Still gets about 3 mins but even from the start any full throttle moves will sag pack to numbers like 8v which osnt the best but it does instantly recover to over 11v.
Pack still only gets 110f and yet to have motors break 106f on any flight.
Need some better non sagging 550-650mah 2s and 3s packs and hopefully black label does that.
I have a test 550 3s 80c coming dro them and hope its the golden ticket for these triples as the quad wants to fly itself very fast like amd very far away with them.
Really though the quad is so agile and fast and achieves speeds my highest power 14xx and 15xx size 3in running 4s 850 packs are just able to run if not they are slightly slower but not close as agile and they are no pig 3in builds either just not 75g without lipo like this one.
Also even with lipo its so liteweight I can death roll across the field at 50mph and with fully exposed camera it does nothing and not even tilt my camera or bend my free standing antenna,pretty awesome.
It has been the only quad I'm excited to go fly outside my house where I havnt really done too much as it became boring being scared with a 100mph 1 pound brick around this area.
Also stated they were 70g with shorter wires but turns out they are 6.5g with 2in wires which I know is a big deal breaker for alot of you.��
I actually received 9500kv version yesterday and am building right now and will run 2s on it as well as 2s and 3044tx and see if the smaller packs will do better or a little better at least.
Would be such a waste of a small light motor with all these ultra lite 3in frames out, that are basically the same 2in and 2.5in frames for 11xx size motors but with 3in arms,and have to strap a larger mah pack on it.
I can say, I did try a 3s 800mah pack with 3044tx and the quad didnt like it and flew like crap and then putting a 650mah back on it became a feather with nitrous again.
I do have a 1s 600mah pack but honestly if a still somewhat fast but umderpowered feeling 10s quad is wanted id think flexrc 1103 and 1104 16500kv or 15000kv or even dys 0905 10000kv would be better suited ,both being great motors and 0905 having same if not more speed and power than many 11xx size motors I've flown and stay cool as can be even on emax 2345 triples on 2s and would bet 10 to 1 that 3s isn't a problem for em.
But ill try 10s and 3025 on these 9500kv and see what its like which I can imagine still quick and snappy from being under 90g but maybe lacking fast turn around and fall recovery abilities but could be wrong.

Anyway the 3025 dual prop is so fast and efficient and the build being liteweight the triples are almost not needed and the 650 packs are more than perfect for them.
I wouldnt be mad if there isn't a 650 or smaller pack that can't handle triples is how good they really are which should say alot simce I bought these expensive ass props.
Also have some 2535 rotorx props and 1.9in triple though these motors will laugh at 1.9in like a 5th street working girl.
Well let me finish this little fella so I can fly it before dark and make it to the post office still today.
Hoping for that black label 3s 550 today but ill see.
Oh yea was gonna mention motors have 6in wires and weigh 7.6g with them.
Already mentioned 6.5g with 2in wires☺

Sorry for wrong spellings as my phone spell check either fixes words or makes up crazy words or don't fix at all on top of typing fast as I can as I'm always in a rush for some reason.gotta go make some coffee and check the mailbox and finish this build and rush to post office before it closes and buy front brakes for the car and put em on amd it gets dark at 6:20 or so I should be good right?
Nov 04, 2017, 01:27 PM
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Dirkdigla666's Avatar
Well only got to fly inside due to getting dark but quad has obvious of increase which is felt.
They still spool up so smooth and near silent .
I ran 2s 450 since full throttle wasn't gonna be happening with 8 ft ceilings.
The motors still stayed just as cool as 8100kv and used 3025 rotorx props.
Seem about as efficient or at least at lower throttle they do we will see about high throttle today.
Also flew around my living room doing figure 8s on 3s and as suspected didn't even break 75f in my 69f house.
Ended up building elongated x frame till I get my order in the mail with micro matek fc for my other efaw 3in frame.
With 3in wires instead of the 6in on efaw the build auw is 83.5g.
I think if you want stupid speed and power as well as ridiculous agility from these little 1402 6.5g motors it helps to really aim to have your build 100g or under.
Ill measure motor mount spacing today but they don't mount on my 3in tooth fairy floss frame that is for 1407 motors.my guess is 12x12 but will have to check.
Don't think 30+ grams is gonna be prime for these motors anyway so shouldnt matter too much as a 3s 800 graphene weight over a tattu 650 3s could be drastically felt unless the pack was just that crap and out of shape but in not sure 100% as what the pack has been through.
Will report back with how the 9500kv does outdoors today
Also see bangood has these motors up on their site but not for sale of course so should be coming out anytime .
I'd deff put in a stock notification on those if you wanted them though.
Nov 04, 2017, 01:33 PM
run
run
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run's Avatar
Any ideas on flight times on that 2s/450/3" for figure-8s in your house? I know that's not a very good measure - but with such different flight styles it's probably about as close to baseline as you can get.
Nov 04, 2017, 01:54 PM
I just wanna fly, fly, fly
Brainstorm's Avatar
Dirkdigla666: Thanks for continuing to post feedback here!

In other news, Brother Hobby posted word of mid-November arrival of the BH1402 over in the Mini Tubular Quad thread.

Quote:
Originally Posted by brotherhobby
Hello,will be shipped out in the middle of November.
Really looking forward to these 1402 motors!


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