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Electric Stunt => Gettin all AMP'ed up! => Topic started by: Vitalis Pilkionis on November 02, 2018, 09:53:18 AM
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In a case someone is struggling to find a suitable electric motor for 6S (5S) setup. Here is the list I have been gathering for some time. Weights and prices are approximate. Updates will be following.
AXI V2 2826/13(F2B) 710kv 177g 98eu
Cobra C-3520/18 550kv 216g 70eu
Cobra C-3520/14 700kv 216g 70eu
Cobra C-3515/18 740kv 178g 65eu
Hacker A30-12XL V4 700kv 177g 92eu
Hacker A40-10S V4 750kv 208g 112eu
Hacker A40-12S V4 610kv 200g 112eu
Hacker A40-14S V2 530Kv 208g discont
Hacker A40-12S V2 610Kv 208g discont
Plettenberg Orbit 20-16 720kv 215g 184eu
Plettenberg Orbit 20-18 640kv 215g 184eu
Plettenberg Orbit 15-22 685kv 175g 162eu
Plettenberg Orbit 15-24 620kv 175g 162eu
Plettenberg Orbit 15-26 585kv 175g 162eu
Kontronik Kondor 25-65 650kv 218g 170eu
Kontronik Kondor 25-55 550kv 218g 170eu
Kontronic Kondor 15-69 690kv 150g 160eu
Kontronic Kora 25-10 650kv 225g discont
Kontronic Kora 25-12 550kv 225g discont
Kontronic Kora 15-16 690kv 150g discont
Torcman NT350-20-Z anykv 220g 149eu
MVVS 8.0/680 680kv 225g 115eu
Scorpion SII-3026 710kv 205g 140eu
E-Flite Power 32 770kv 200g 70eu
ROXXY C35-48/06 700kv 172g 60eu
ROXXY C42-50/07 720kv 195g 70eu
ROXXY D3555/06 590kv 178g 75eu
FOXY G2 C3520-730 730kv 205g 70eu
Pichler Boost 45 V2 700kv 185g 63eu
Simprop Magic Torque 40-07 700kv 175g 52eu
PA Thrust 45 740kv 205g 99eu
T-Motor (Tiger) AT3520-6 730kv 206g 74eur
Dualsky XM4250EA-7 640kv 209g 55eu
Dualsky ECO 3520C V2 680kv 210g 53eu
LEO-Dualsky 3520-0500 500kv 210g 55eu
Fusion 3551/06 700kv 175g 50eu
Hobbystar 3520-07 720kv 205g 40eu
Emax GT2826/06 710kv 175g 35eu
Joker V3 4250-6 680kv 210g 36eu
Joker V3 4250-8 510kv 210g 36eu
D-Power AL 42-06 540kv 199g 58eu
D-Power AL 42-07 710kv 195g 58eu
Leopard 4250-(6T-7T-8T) 720kv-620kv-550kv 208g 42eu
Aeolian C5045/C4110 720kv 210g 32eu
Sunnysky X3520-06 720kv 210g 32eu
Sunnysky X3520-08 520kv 210g 32eu
Turnigy SK3 4240 620kv 194g 35eu
Turnigy G32 600kv 202g 33eu
Aeolian 4250 600kv 205g 30eu
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How about Cobra?
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How about Cobra?
Good point, thanks. Corrected.
Vitalis
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Cobra C-3520/18 550kv 216g 70eu
Just curious.. What size prop (dia & pitch) do you use with 550Kv motor on 6 cells?
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Just curious.. What size prop (dia & pitch) do you use with 550Kv motor on 6 cells?
Hi Joe,
I know Sergii Solomianikov from Ukraine has been testing Cobra 3520/18 550kv on 6S with 13.5x5.5 3-blade prop. Recently he told me that the motor perform very well with this prop.
And Pavel Kravchenko uses the same prop with Hacker A40-14S 530Kv also with a great success.
Greetings,
Vitalis
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Hi Joe,
I know Sergii Solomianikov from Ukraine has been testing Cobra 3520/18 550kv on 6S with 13.5x5.5 3-blade prop. Recently he told me that the motor perform very well with this prop.
And Pavel Kravchenko uses the same prop with Hacker A40-14S 530Kv also with a great success.
Greetings,
Vitalis
Thanks Vitalis. much appreciate the insights. It makes sense now.. lower Kv motors swings larger props at lower rpms.
That looks like a nice prop. Would you know who makes that one? wouldn't mind getting one to check out. :)
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Thanks Vitalis. much appreciate the insights. It makes sense now.. lower Kv motors swings larger props at lower rpms.
That looks like a nice prop. Would you know who makes that one? wouldn't mind getting one to check out. :)
As I know Pavel Kravchenko makes and sells them. You can contact him on FB easily, here is his profile:
https://www.facebook.com/profile.php?id=100006745386478
Vitalis
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E Flight make some really good electric motors as well, E Flight 32 KV 770 is a good example (5 cell 13” X 4”).
Mikey
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E Flight make some really good electric motors as well, E Flight 32 KV 770 is a good example (5 cell 13” X 4”).
I have added it to the list, although it's not a 6S motor, but who knows, perhaps someone will find a right setup with it and 6S also. Thanks.
Regards,
Vitalis
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I use this with a 12x6, 12x5, Igor 11x5 UCT 3B
JOKER 4250-8 V3 510 KV it works effortless.
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I use this with a 12x6, 12x5, Igor 11x5 UCT 3B
JOKER 4250-8 V3 510 KV it works effortless.
Thanks, I'v added it to the list. Just out of curiosity, what rpm do you get with these props and 510kv motor? And do you use any active rpm regulation?
Vitalis
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I get 10500 rpm on the 3 blade. Checked it on the ground. Not sure that was the MAX as it was done with the timer on the ground. I would have to rig something up and bench test to be sure. Yes I use Igor for now. I also have the Fiorotti timer.
More recently I have changed to the 12x6 XOAR electric prop.
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I get 10500 rpm on the 3 blade. Checked it on the ground. Not sure that was the MAX as it was done with the timer on the ground. I would have to rig something up and bench test to be sure. Yes I use Igor for now. I also have the Fiorotti timer.
More recently I have changed to the 12x6 XOAR electric prop.
Hm, this is interesting. Let's say we have freshly charged 6S battery, that's ~23V under load.
23 x 510 = 11730 rpm.
That means the motor performs at ~90% efficiency. And that's if we don't count other loses.
Vitalis
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Looses usually show up as excessive heat, and I can shut down the motor touch it with my hand and a little warm for sure mot hot at all. So I don't really have excessive looses in the system.
I will make a bench test and will update the information.
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Looses usually show up as excessive heat, and I can shut down the motor touch it with my hand and a little warm for sure mot hot at all. So I don't really have excessive looses in the system.
I will make a bench test and will update the information.
Anyway I think you should use that motor with a 13x6 prop. Then it will work in it's sweet spot.
Regards,
Vitalis
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I will try the 13in props in the spring after I do the gear modification. That prop might be hurting the corner a little on my model. It is likely that if I go to the 13in diameter I might end up with a 13x7 or even 13x8 and use battery 5S or 4S but that is not the subject of this topic.
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Vitalis, you seem to be a big fan of 6S setups. I might have my ideas as to why, but would you please elaborate for everyone's benefit?
Coincidentally, I'm designing a new airplane for my kid, and this discussion is very useful.
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Well, it's a simple story. When four years ago I started look into electrics I read a lot of information and decided that Igor's setup was the most advanced and sophisticated. So I invested in Igor's active timer and that's how it started. And I never regret I did. Actually that saved me a lot of time, because the setup has always been reliable and trouble free, so I could spend more time on flying. And now I don't see a reason I should go other way. Next year I am going to try 550kv motor with the new ukrainian prop, but still this will be 6S setup.
Vitalis
Vitalis, you seem to be a big fan of 6S setups. I might have my ideas as to why, but would you please elaborate for everyone's benefit?
Coincidentally, I'm designing a new airplane for my kid, and this discussion is very useful.
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Vitalis :
I'm considering swapping out the E-Flite Power 15(950KV, 5.4 ounces) with 4S passive system in my Caprice (Classic ) for either an AXI or Cobra . Since you have already done a lot of research, what is a comparable motor with, of course, a lower KV rating ?
I plan to go 6S with an Active timer; possibly Igor's system. The primary considerations ,as I see them, are weight, KV rating and ability to swing a 3 blade . I believe that a 9" or 10" (at most) with a 4.5 or 5 pitch three blade would be about right. Need to find out who is producing carbon fibre props of this size that are suitable for our purposes.
Thanks
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Vitalis, you seem to be a big fan of 6S setups. I might have my ideas as to why, but would you please elaborate for everyone's benefit?
Coincidentally, I'm designing a new airplane for my kid, and this discussion is very useful.
There is no "automatic" reason for 4 or 6 cells. When I designed 6 cell setup, I used rather higher voltage and lower current because Spin ESC has upper limit 6 cells and it will run at lower current. Plus there were more available motors in usefull range and plus differnce between 6 and 5 pitch prop with the same motor responds to 5 or 6 cells. Usage of constant RPM or active timer setup is also aproximately one cell (6 vs 5 - while 3 vs 4 or 4 vs 5 is already too much). Simply it was easier with 6 cells. However if you can find proper combination of prop / motor / battery with 4 cells, it is not going to be worse or better than 6, both have some +es and some -es.
If I can recommend something, then use well tested combination of prop - motor - ESC - timer - battery. Only when you see how it should/can work, start with experimenting. There are too many wrong combinations and olny few those well ballanced and it is always good to have chance to compare :)
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I see the Scorpion 3026 710kv is on this list. I have one of these motors. Though go to Scorpion website and it suggests max 5s battery for this motor. Has anyone successfully run one on 6s? I don’t own any 5s batteries and would rather stick with 6s but don’t want to let the smoke out of this motor.