BrotherHobby SPEEDSHIELD 2207.5-3400KV - Thrust Test Results

[@MCsCreations]

WOW... Man! What the hell! Look at those amps!!! 😱 People say the BH R3 are battery killers because they don't know this one! Pretty impressive tests, man!!! 😳

[@ganon420]

4" is the most I can see being used on these motors. I don't think these are for me. But the high speed on 4" could be awesome. Keep the tests coming.

[@charleshodge9807]

I've gotten 140mph on a 4.7in prop on 4s on a rebel ruxus v2 with the 3400kv motor. I posted video on fb on BH page and on my utube page which if you search 2207.5 3400kv speed run will likely pop up. They were barely warm and I used a spedix gs40 4in1 so they didnt pull no 300a or nothing crazy ,I believe it was around 170a . Pretty awesome motors actually. Gonna run some 5030 apc props and see what they do here any day . Lower pitch but should be good speeds still. Thanks engineerx for great tests.

[@EngineerX]

I may have to re-test on 4" prop. I didn't think these would be used in a 4" setup but your crazy speed tells otherwise. That's frigging fast for a 4" !! Yes, also 5030s could be a great match, just not the oldies from GemFan, too flimsy, Gotta definitely thanks BH for releasing a motor like this

[@EngineerX]

kzbin.info/www/bejne/r6HOamt9acmgr9E Found it - that's fast!

[@charleshodge9807]

@@EngineerX yea if used on a lightweight frame and propped fight ,basically 4.1x4.1 APC or 4.7x4.7 apc and likely dal 4045x3 and hq4043x3 which I have all of and will try the last 3 mentioned, it will fly great with quality brand high c lipos like rline,pulse graphene 95c,strix 100c and turnigy graphene as well as a few of the luminier graphene and n20 packs. Also flying in soccer fields wide open non stop will obviously beat a pack and prob the motors so dok g that and saying the motors suck and amp killers is plain stupid which I dont doubt people will do . You really can fly them at all under 50% Throttle and have amazing resolution and same flight times and power as a lower kv hv setup and then also have that last second recovery top end if ever needed so actually can be the better setup ,again shen used in the right situation. I didnt try but likely can break any 3s speed record with these with even a 4in prop against 5 and 6in. I think fastest 3s is like 15 or so and with 6in prop and powerful 2210 cobra but I'm almost positive I could break that with a 4in dual prop. I'll give it a go.

[@EngineerX]

@@charleshodge9807 Very well explained and you're right. You have to know not to go full throttle for long periods on these and have to make your build just right for this motors and they will perform really well for that specific build. Thanks for adding all this good info.

[@nasone32]

Aaaargh I would really have liked a couple of 4 inch props in the test! Probably 1.5 kg on a 4 inch, would be nice to see!

[@kieptajfpv6010]

or 4,5 inch :)

[@EngineerX]

Looking at some of the comments, it looks like these have gone upto 140mph on 4" so I will have to re-test on 4" and maybe some 5030x2 and 5040x4 props

[@EDCandLace]

Cyclone 5046x3 did 1910 at 80.2amps at 14.8v lmao... Just think about that 80 amps flowing through something that small... Honestly that's insane like for real... We had 70mm carbon EDFs that run 4s 4100kv on inrunner motors that we was pushing 33 inch carbon monocoque thin airfoil flying wings we would run 2x 2s 3700 in series side by side because they are thin and the wing is very thin.. In fact we designed the wing around the batteries thickness to get it as low drag frontal section as possible. We built a couple of them and flew them LOS and FPV... We made larger ones to that ran 6s and 8s on 90mm carbon edfs the wings had moulded in intakes not just a fan strapped on top. The point of all this is the 70mm very high pitch 12 blade fans would only pull about 95amps at peak fan loads/Static... These wings was capable of 155mph level flight on 2x 3s 3000s in series 190mph level flight was the normal and in flight 4s pulled roughly 75amps for as long as the batteries could give it but that was all it pulled. It's honestly amazing that a 2207.5 can handle 80 amps and not smoke a coil pretty much instantly. How hot was the motor after these 4s runs? Did temps just up big time during those short run ups? I have these in the 2700kv on a track quad and they are fantastic motors my main track quad motors are 1600kv F40 Pro II and IIIs and im also flying the F40 Pro II 2150kv on 6s as well on big high speed tracks that i need the top end and can carry 6s 1550s without the weight killing me in tight sections. I wouldn't consider this even on a uber powered 4 inch build BUT what this motor would be excellent for is say a 4.75x4.75 prop on 5s on a 30 to 32 inch flying wing a low drag low lift airfoil you could get some really insane speeds and on a 4.75x4.75 biblade even on 5s your amp draw would be lower then this static test and you would have plenty of cooling and the pitch speed would be very high with that kv on 5s. There is very few if any motors that i know of that can handle this type of current even if it's for a couple seconds that would give me this kinda pitch speed and come in at 30 grams. As you know pitch speed rules on high speed craft. I wonder could this motor with plenty of cooling handle 6s on 4.25x4.25 biblades? Omg if it could 150mph on a low drag low lift type airfoil that's setup for 2x 3s 2200s would be achievable without much work on a simple laminated foam board wing. Do you think this motor would smoke at 65 amps for 15 seconds? Im assuming that about what a 4.25x4.25 biblades would pull in flight on 6s. I wish I had a sample now to use as I don't want to buy a full set or i could get it from amazon but singles i have to order from banggood i believe... I will check the normal usa vendors and if anyone stocks them and i can get a single i will build one as soon as i get it and if it smokes it smokes... Ill order two lol and if I smoke one at 6s i will drop down to 5s and maybe go to a 4.5x4.5 biblades up from the 4.25x4.25 on 6s.

[@EngineerX]

I'm going to try to answer the most important question. Yes. For 15 sec there a very high chance that it will fry the coils at 65A continuous. The unknown is if with those 4.75 biblades it will pull that many Amps or even more in-flight. I really don't know. My tests are mainly just to get Max thrust capability but during very short 3 to 4sec spurts. Usually for multirotors [fpv-acro] that's how we use them . These smallish motors with short stators run mostly overpropped at the high rpms in the static tests. But the results give us some numbers for comparing across motors.

[@GroundControlRC]

Thanks for the review of this motor. Wow! That 3400kv is pretty high kv for this size motor ;-)

[@EngineerX]

Definitely a "special" motor. Looks like people are using it on 4" props getting upto 140mph speeds. So yeah, you gotta really plan your build

[@wodifpv644]

Sweet

[@MCsCreations]

BTW, could you test the 2400kv of these and the R6 when you can? I'm really curious to see how they compare to each other and with other motors. 😊

[@EngineerX]

BH didn't send the R6-2400kv :( but I'll test the SShield 2400kv for sure

[@MCsCreations]

@@EngineerX Oh, that's a bummer... 😕 But who knows... Maybe they still do. 😊

[@SettekFpv]

I fly them on 4S with 5149×3 Gemfan Props. Esc i use the Rev32 35amp

[@fpvlive]

Well I assume you've got heaps of sag on 4S

[@MCsCreations]

@@fpvlive You don't know what sag really means until you try those! 😂

[@charleshodge9807]

@@fpvlive actually you need to use so little throttle to put out power and speeds that a lower kv motor would need to be at twice the throttle so if not flying in a wide open area and flying proximity or a tight track your literally flying with awesome stick resolution and control at the bottom half of the stick. The 2205 4500kv I fly on 4in sag alot harder then these surprisingly 👍

[@SettekFpv]

@@fpvlive is not that extrem what i was expect with Bonka Usa V2 1500mha

[@EngineerX]

@@charleshodge9807 Tha's really good info. Thanks. These are definitely some unique motors

[@fpvlive]

Yes this motoris definitely better for4 inch props. On 5 inch the amount of current is crazy.

[@tweekFPV]

👍 👍

[@3000gtwelder]

Also the Hulk I think.

[@quadtastic5826]

Do you think on 6s this would catch fire?

[@EngineerX]

depends on prop and weight of copter. Possibly can work with a 5040x3 or close to that and a very light copter...... like 300 to 400g without battery..... but risky for sure.

[@kieptajfpv6010]

we have to try dalprop cyclone T5051c :) i think they are perfect for

[@EngineerX]

Cool. Thanks for the info. For sure once you get these in the air, moving at speed, the more aggressive, higher pitch props will work fine

[@kieptajfpv6010]

@@EngineerX t5051c are very light 3.3g and they look high pitch but they are made for very high kv motors(the easiest props to spin i ever have)

[@EngineerX]

@@kieptajfpv6010 I haven't ordered those props, I'll see if I place an order for those.

[@wickedreelz5028]

DAL 5051s can't deal with 2207/2306 2500kv motors. They will explode at the hub as soon as they start to flatten and glitter. I wouldn't be any where near that motor with that prop turning that kinda RPM. I fly them on BH 2204 2522kv floss motors on uber light track quads and love them. F40 Pro II 2600kv on a 245ish gram dry track quad and I assure you that as soon as you get on it the props will come apart at the very violently. On higher KV motors the second flutter starts the prop comes apart.

[@EngineerX]

@@wickedreelz5028 yikes..... that sounds scary. I've made it a habit to wear safety glasses and I use a Rx and radio to manually throttle motors on each test and stand away and out the plane of prop rotation. So far only one prop blew apart. Blade dug itself about .25" on roof plywood. Would've hurt for sure. Thanks for the heads up on the 5051s I'll pass on those then.

[@ethanharris108]

I only really see this being used in racing wings, but nevertheless a very powerful motor, the tips on those props should be hitting supersonic at least the 6 inch on 4s

[@EngineerX]

No doubt... gets scary when I see the big numbers on the screen..... from a distance, I don't want to get impaled if one of the blades decides enough is enough and lets go !

[@ethanharris108]

@@EngineerX yup, I made a little rig back towards the early days of fpv because no one was really testing and I wanted to make sure I got the correct components for my builds, got some extremely cheap gemfan tri blades, started to resonate and exploded into a million peices lol

[@nerdCopter]

+1👍

[@protofpv]

the kv is better suited to 4 inch props for sure but kind of a big motor for a 4 inch quad. odd.

[@EngineerX]

You're right, someone already commented they got up to 140mph easily on 4" - 4S setup. Insane!

[@protofpv]

@@EngineerX yeah that's wild! on the right light weight 5 inch setup with some 60a esc this might be a good motor to break the speed record.

[@icarusix8750]

This looks like a twin blade prop motor

[@EngineerX]

Yes, on 5" 2-blade props would match well. I'm thinking of running another test with 5030 /5040 and some 4" props. I was in a hurry trying to get some tests out during the holidays, didn't think of those props.

[@cc201135]

@@EngineerX how about lighter pitch than 5040X3 prop, racecraft 5038 ? or even mr stelle prop (Ethix S3 5X3.1X3) I think worth to try

[@EngineerX]

@@cc201135 The RK5038's could work but I've tested them before on the thrust stand and they don't really do well on static thrust. They start to flutter and don't make as much thrust as expected so the results are a bit misleading because in the air they fly OK. I don't have those Ethix props I'll see if I order a couple.

[@flighttherapybullisticfpv133]

Im almost 100% sure that 1750kv on 6s isnt equivalent to 3400kv on 4s... doesnt seem like any thrust was gained for all those amps...

[@EngineerX]

Right. I didn't make it clear I was referring to thrust numbers being close. Amps, Watts, Efficiency of course are way different

[@blackmennewstyle]

Definitely a motor for 4" props o_O But the line is pretty impressive, they tried to cover all categories of pilot with this motor! I like the colors of Captain America, hope they will come with a Black Panther edition for one of their motors :p Have a great week ahead and thanks for the hard job as always

[@EngineerX]

They definitely need a Black Panther - that would be awesome. Gotta thank BH for venturing on releasing so many KV's on this motor!

[@charleshodge9807]

You get the weight savings of 2 less cells with power of 6s on 4s all for beating your lipos a little which are getting cheaper everyday and even the most quality packs have been on sale for 10 and 12 dollars for rline and strix hv 1550

[@EngineerX]

That's a very good point. If you end up getting half the lifespan on your Lipo, at the lower prices these days it seems like a trade-off that some people will not mind.

[@dronepunkfpv1424]

charles hodge where are these sales at?

[@serval_fpv]

Rline for 10 dollar lol

[@charleshodge9807]

@@serval_fpv actually there back to 18 but were 50% off at helination and were 22 bucks 👍

[@serval_fpv]

@@charleshodge9807 don't see the offer on helination post a link

[@digranni128]

Capitain America is very strong .

[@EngineerX]

LoL.... it's all about the Vibranium!