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Angry Oskie Micro Quad
#46
(11-Nov-2017, 12:48 PM)Oscar Wrote: Okay I've just tested the Sunnysky 0705 15000kv on my quad, but I apologise for being unable to provide any specific numbers on performance, I can only tell you how I feel flying different motors.

- the SS motors are extremely noisy! not sure if I have defective motors, they have a very loud and high pitch noise
- The SS motors feel a bit more powerful and more responsive than the 0703 motors, but I get only 70%-80% flight time; That could be caused by the heavier weight, they each weighs at 3g compared to the 0703's 1.9g
- the motor wires have coating on them that prevents them from taking solder! you will need to remove the coating if you shorten the wires, it's a PITA.

I still recommend the 0703 motors over the 0705... But if you absolutely have no other choice, the 0705 would work just fine but prepare for the noise!
Gearbest also stock the SS motors (affiliated link): https://www.gearbest.com/motor/pp_924100...d=11870917

So your recommending the 0703 BoldClash? Not the 0703 ss?

I own motors with a coating like that, there impossible to work with.
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#47
(11-Nov-2017, 07:34 PM)ultifix Wrote: So your recommending the 0703 BoldClash? Not the 0703 ss?

I own motors with a coating like that, there impossible to work with.

I have not tried the SS 0703 yet.
To remove coating you can use a piece of sand paper.
Don't be a LOS'er, be an FPV'er :) -- Blog - Facebook - Instagram - Twitter - Google Plus
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  • ultifix
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#48
(11-Nov-2017, 10:45 PM)Oscar Wrote: I have not tried the SS 0703 yet.
To remove coating you can use a piece of sand paper.

Thank you, went ahead and ordered those 0703 boldclash.
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#49
Hi Oscar, like to share my experience.

I'm flying the DustX58 indoors for a while. With Racerstars BR0703 20000kV.
These were very noisy (high frequency) with the std. 40 mm triblades.
Now running with the Eachine 45 mm (cut back to 38 mm) triblades: https://www.banggood.com/5X-Eachine-3-Bl...rehouse=CN
Same punch, much less noise and a little more effective (5-10 % more hoover time).  

Just finished a micro build for outdoor use, without propguards, based on the Lollipop 75 mm frame with Racerstars BR0703 15000kV motors.
These run very fine with the 40 mm triblades.  Not a lot of noise.

Both frames weight 28 grams.
Flying both with 500 (15 grams Nanotech 25-50C), 600 (18 grams Turnigy Graphene 65C)  and 750 mAh (18 grams Nanotech 35-70C).

Both frames compared:
- DustX58 is perfect for indoors because of the propguards. Throttle during hoovering around 65%, Flying times on the 600 mAh Lipo's around 1:45 100% motorpower and 3:00 min real flying. Motors and lipo's hand warm.
- Lollypop is perfect for outdoors: motors and lipo's stay cold ! Punch equal to the DustX58. Throttle during hoovering around 55%, Flying times on the 600 mAh Lipo's around 2:15 100% motorpower and 4:00 min real flying.

Conclusion: the Racerstars BR 0703 15000kV are 25-30% more efficient and run nicer.
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#50
(24-Nov-2017, 03:21 PM)Awap Wrote: Hi Oscar, like to share my experience.
I'm flying the DustX58 indoors for a while. With Racerstars BR0703 20000kV.
These were very noisy (high frequency) with the std. 40 mm triblades.
Conclusion: the Racerstars BR 0703 15000kV are 25-30% more efficient and run nicer.

thanks for the feedback Smile I didn't like the 20000KV either.
Don't be a LOS'er, be an FPV'er :) -- Blog - Facebook - Instagram - Twitter - Google Plus
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#51
Well Oscar, if you have some spare 20000kV motors the following can be an upgrade  Smile
Since I had the feeling that the 20000 kV is too much for 3 bladed props, I tested some 2 bladed props.

I fly my DustX58 with the Racerstar BR0703 20000kV now with the 2 bladed Kingkong props.
https://www.banggood.com/10-Pairs-Kingko...rehouse=CN
These fit very nice on the 1 mm motor shaft.

Compared with my 3 blade Eachine 38 mm ( cut back from 45 mm), I noticed a big improvement with the Kingkong 65 mm (cut back to 38 mm) props:

Motors run cooler, hoovering at 55% (Eachine at 65%).
Flying times on the 600 mAh Lipo's around 2:15 minutes @100% motorpower and 4:15 min real time flying.
But a little less punch at full throttle, no problem for indoor flying.: 

Flying can be compared with the BR0703 15000kV now. Only a little less full throttle punch.

Conclusion: Nearly 50% longer flying time. Go for the 2 bladed props when using the 20000kV version.
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#52
(28-Nov-2017, 06:53 PM)Awap Wrote: Well Oscar, if you have some spare 20000kV motors the following can be an upgrade  Smile
Since I had the feeling that the 20000 kV is too much for 3 bladed props, I tested some 2 bladed props.

I fly my DustX58 with the Racerstar BR0703 20000kV now with the 2 bladed Kingkong props.
https://www.banggood.com/10-Pairs-Kingko...rehouse=CN
These fit very nice on the 1 mm motor shaft.

Compared with my 3 blade Eachine 38 mm ( cut back from 45 mm), I noticed a big improvement with the Kingkong 65 mm (cut back to 38 mm) props:

Motors run cooler, hoovering at 55% (Eachine at 65%).
Flying times on the 600 mAh Lipo's around 2:15 minutes @100% motorpower and 4:15 min real time flying.
But a little less punch at full throttle, no problem for indoor flying.: 

Flying can be compared with the BR0703 15000kV now. Only a little less full throttle punch.

Conclusion: Nearly 50% longer flying time. Go for the 2 bladed props when using the 20000kV version.

wow thanks for the update Smile
i will give these a try!
Don't be a LOS'er, be an FPV'er :) -- Blog - Facebook - Instagram - Twitter - Google Plus
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#53
Cutting props: 0.8 mm drill (1mm is too tight) in my wooden bench to rotate the prop.

If somebody knows a better way to cut these prop? Like to know.

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#54
(28-Nov-2017, 11:51 PM)Режущий Wrote: режущие пластины Awap : сверло 0,8 мм (1 мм слишком плотно) на моей деревянной скамье для вращения опоры.

Если кто-то знает лучший способ разрезать эту опору? Нравится знать.


В качестве опции)

https://www.thingiverse.com/thing:1797211
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#55
(29-Nov-2017, 04:57 AM)Vasa Wrote: В качестве опции)

https://www.thingiverse.com/thing:1797211

Thanks. I'll try that option next time.
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#56
(28-Nov-2017, 11:51 PM)Awap Wrote: Cutting props: 0.8 mm drill (1mm is too tight) in my wooden bench to rotate the prop.

If somebody knows a better way to cut these prop? Like to know.


I think these props are actually just ladybird props right? Also 58mm and looks very similar
https://www.banggood.com/Wholesale-Walke...46561.html
Don't be a LOS'er, be an FPV'er :) -- Blog - Facebook - Instagram - Twitter - Google Plus
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#57
The props I used are the Kingkong 65 mm for the 820 brushed motors, but when cut to 55 mm they could be equal to the 55 mm Ladybird props Smile
I tried my cut to 38 mm Kingkong props outdoors today. Enough speed and punch, nice flips at better efficiency compared to tri bladed ones.
No need anymore to exchange my 20000 kV motors for the 15000 kV ones.
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  • Tom BD Bad
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#58
(01-Dec-2017, 12:07 AM)Awap Wrote: The props I used are the Kingkong 65 mm for the 820 brushed motors, but when cut to 55 mm they could be equal to the 55 mm Ladybird props Smile
I tried my cut to 38 mm Kingkong props outdoors today. Enough speed and punch, nice flips at better efficiency compared to tri bladed ones.
No need anymore to exchange my 20000 kV motors for the 15000 kV ones.

fantastic, cannot wait to try this when I finish my Martian build Smile
Don't be a LOS'er, be an FPV'er :) -- Blog - Facebook - Instagram - Twitter - Google Plus
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#59
(11-Nov-2017, 12:48 PM)Oscar Wrote: Okay I've just tested the Sunnysky 0705 15000kv on my quad, but I apologise for being unable to provide any specific numbers on performance, I can only tell you how I feel flying different motors.

- the SS motors are extremely noisy! not sure if I have defective motors, they have a very loud and high pitch noise
- The SS motors feel a bit more powerful and more responsive than the 0703 motors, but I get only 70%-80% flight time; That could be caused by the heavier weight, they each weighs at 3g compared to the 0703's 1.9g
- the motor wires have coating on them that prevents them from taking solder! you will need to remove the coating if you shorten the wires, it's a PITA.

I still recommend the 0703 motors over the 0705... But if you absolutely have no other choice, the 0705 would work just fine but prepare for the noise!
Gearbest also stock the SS motors (affiliated link): https://www.gearbest.com/motor/pp_924100...d=11870917

I have these motors but the screws are way too short to fit through your frame, how did you month them?
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#60
(09-Dec-2017, 12:00 AM)Delve Wrote: I have these motors but the screws are way too short to fit through your frame, how did you month them?

order longer ones on ebay, only a couple of $ a few dozens.
I use M1.6 x 4mm for my frames.
Don't be a LOS'er, be an FPV'er :) -- Blog - Facebook - Instagram - Twitter - Google Plus
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