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Old Yesterday, 07:27 AM
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ashdec87's Avatar
United States, MI, Detroit
Joined Feb 2004
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Hm ok, I might go with the 2826-740 so I can use the 12x8 if the 13x6 doesn't give me enough speed.
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Old Yesterday, 09:24 AM
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Joined Jan 2014
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Originally Posted by Cathay Stray View Post
?? They aren't, at least there is nothing about multirotors in their Chinese papers. I used 2814 1200 KV on my Chiphyr (Chinese Zephyr), and 2820 920KV with 11*7 prop on Skyhunter and they worked well enough. Replaced the 2820 with a lower KV same size another brand now, KV was the only reason for this shift. Flying now on 13*8 prop.
Did you ever try the 12 /6 on the Skyhunter with your 920? That's what I was planning to try.
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Old Yesterday, 12:18 PM
Flying Zayin
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China, Guangdong, Guangzhou
Joined May 2012
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Originally Posted by Kreskin View Post
Did you ever try the 12 /6 on the Skyhunter with your 920? That's what I was planning to try.
Yes I did but I found 820 with 13*8 better. Higher take off current but somewhat lower cruising power consumption.
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Old Yesterday, 12:50 PM
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Las Vegas
Joined Mar 2009
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Originally Posted by Cathay Stray View Post
Yes I did but I found 820 with 13*8 better. Higher take off current but somewhat lower cruising power consumption.
Is this on 4s or 3s and how many mah?
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Old Yesterday, 11:20 PM
Flying Zayin
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China, Guangdong, Guangzhou
Joined May 2012
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Originally Posted by LVSloper View Post
Is this on 4s or 3s and how many mah?
It is on 4s and I'm not sure about exact numbers. Whatever I say below is "more or less" and mainly based on my feeling throughout the flight.
I took off (overhead throw) at 40-45 A with a 12-incher and a 920 motor, now I am taking off (overhead throw) at 50-58 A with a 13*8 and 820. However it is only a few seconds and as soon as the plane is at safe alt/speed I move the stick down. On a higher KV/smaller prop my SH cruised at 15 A, sometimes 12 was enough; rarely 10. Now at 820 KV 13*8 prop I am happy at 7 to 9, occasionally 5-6 would be OK. If I'm up to some sort of sporty flight the current can get up to 12-16 A, very very seldom higher (only if I suddenly need to climb more than 10 m real fast).
25 km round trip (half an hour, slightly more) on a 5Ah 4s battery not a limit but I don't like coming back with dry tanks.
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