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Happymodel SE0706 15000kv thrust test
#1
Quick number crunching on the Happymodel SE0706 15000kv thrust data, which I forgot to post Smile

You can get it from Banggood

The one I've received has a lot of vertical play on the bell - looks like it is missing a washer (my guess). It produced horrible vibrations on smaller props and due to this I only did a 1s test. I really can't tell if this is an issue present only on that one piece or on all of them...

After disassembly I see that there is a washer under the e-clip, but that one is clearly not enough. The motor uses brass bushings, not bearings.

The motor stayed relatively cool during the test.

Weight: 3.75g
Wire length: 5cm

If it wasn't for that loose bell I'd say that the build quality would be very decent, with tightly packed magnets that actually seem to be arced, air gap is very small.

I have tested it with different props:
31mm quadblade and cut to biblade (eachine e010/e011 "whoop")
31mm triblade
40mm quadblade and cut to biblade
56mm generic and cut to 40mm

Last ones are from cg023, not sold anymore, generally they seem to be a bit more powerful and efficient than the ladybirds (compare here), unfortunately all my other "longer" sample props are drilled for the 1103 and don't fit the 07xx motors. Need to get some fresh sets.

[Image: fglJELfl.png]

[Image: wCxW5lQl.png]

The motor got very hot on 2s test, I would stay on 1s in this case.

Data taken with an RCBenchmark 1520 thrust stand
Marked rows may possibly be affected by the amount of vibration the motor made.

And some photos:

[Image: ZeWuF8hl.jpg]

[Image: sVlj3bul.jpg]

[Image: uVF9rOTl.jpg]

[Image: LF2oP77l.jpg]

[Image: BVVwLd1l.jpg]

A look inside:

[Image: yvEmOU8l.jpg]

[Image: GyMSowbl.jpg]

[Image: ReezWvYl.jpg]

Happymodel 0706, Sunnysky 0705 (blue base):

[Image: fFAx5wGl.jpg]

[Image: ZS7Yqsel.jpg]

Size comparison with Sunnysky 0705 and Racerstar BR1103

[Image: anmMdGLl.jpg]

[Image: S1LvUSPl.jpg]

[Image: pUVkfpUl.jpg]
Find me on Youtube and Instagram. I currently fly: DRC Aura, NOX5R, Minimalist 112 and drive a scrap RC car
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#2
thanks for the test Wink so 1mm motor shaft and 6.5mm mounting?
Don't be a LOS'er, be an FPV'er :)  My Gear - Facebook - Instagram - Twitter
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#3
Technical drawings state 6.6mm mounting, but it fits the same printed arm as the 6.5mm Sunnysky. I guess that difference is not relevant while printing on a home printer Smile

Btw, big shoutout to Grisha for designing and printing the thrust stand mount Smile
Find me on Youtube and Instagram. I currently fly: DRC Aura, NOX5R, Minimalist 112 and drive a scrap RC car
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#4
Is it my imagination or does it look like the happymodels use thicker copper for the windings?
Did you try them on 2s Konrad?
Windless fields and smokeless builds
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#5
I didn't try 2s, I was afraid it will explode due to vibrations. But to be honest... I will do it in the name of science. What do I have to loose? Wink
Find me on Youtube and Instagram. I currently fly: DRC Aura, NOX5R, Minimalist 112 and drive a scrap RC car
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#6
(23-Jan-2018, 02:24 PM)KonradS Wrote: I didn't try 2s, I was afraid it will explode due to vibrations. But to be honest... I will do it in the name of science. What do I have to loose? Wink

Well if it explodes maybe an eye, and you will look like this all the time!  Wink
Windless fields and smokeless builds
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#7
Sooo it didn't explode. As a matter of fact the vibration stopped at about 70% throttle on 2S, but it got VERY hot on each prop. Thrust result added to the main post.

FYI sunnysky uses bearings, that would explain lower temps on 2S.

For the windings, the Sunnysky seems to use more wire, logically that would mean it uses two wires for each winding, but honestly it is very hard to tell as they are so small and I don't want to remove the winding just to check this Smile

[Image: ZS7Yqsel.jpg]
Find me on Youtube and Instagram. I currently fly: DRC Aura, NOX5R, Minimalist 112 and drive a scrap RC car
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#8
Maybe it's an optical illusion, but the difference in the height of the stator between the 0705 and the 0706 looks like much more than 1mm.
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#9
Checked both - Happymodel is 6mm, Sunnysky is around 4.5mm. Naughty Smile
Find me on Youtube and Instagram. I currently fly: DRC Aura, NOX5R, Minimalist 112 and drive a scrap RC car
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#10
Very naughty!

I'm glad there's nothing wrong with my eyes. Smile
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#11
Just ordered a set of these from xt-xinte.com I used a 'new member $5 off coupon' and paid $20 inc. shipping. A third of the price of a set of the new Brotherhobby 0804! However I wouldn't be surprised if the Brotherhobby's were over 3 times better!
Windless fields and smokeless builds
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