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600 Class Electric Helicopters 600 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar. |
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08-06-2009, 06:40 PM | #1 (permalink) |
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Join Date: Jun 2008
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8S SETUP ? ON TREX 600ESP
I'm looking for advice on an 8s setup using a scorpion HK4025 890kv, castle 85hv, and 2 4s 25c 3300mah or 4000mah in series for approx 5 min flight time at 80% battery drain. My question is will 3300mah get it done or do i need to go with 4000mah. Also what pinion gear would i run to achieve about 2200 RPM Head speed.
I would appreciate any advice I could get on this subject or even a setup you would recommend. |
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08-06-2009, 06:48 PM | #2 (permalink) | |
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Quote:
your looking at a 16T pinion with a 170 main gear @ 90% EFF with 3.65 cell voltage you should hit 2200 HS
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MSR x1 / mCPX x2 / 450 x4 / Chaos600 test bed / Chaos600 Air-Wolf / American WereWolf 800 / KFrame800/900/1000 / Assorted Fixed Wing JR9303 / JR9503 / Futaba10CHP |
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08-06-2009, 07:15 PM | #3 (permalink) |
Join Date: Apr 2008
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Yes, 3300 packs will work if you land within 5 mins. However, you will need high discharge packs and you will be pushing packs pretty hard. Better go with 4000 option.
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08-06-2009, 10:55 PM | #4 (permalink) |
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Join Date: Apr 2007
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i ran 4000mah packs with a 4025-1100 and ran around 4:30 runs at 2100-2200 HS and would charge back anywhere from 2800-3200 mah. i dont always fly the same routines so discharge varies
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08-07-2009, 05:12 AM | #5 (permalink) |
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If you are going for a 8s setup, you should consider castle's new ICE ESC.
it is smaller in size, and logs head speed, throtle stick input, temp., voltage, amp... |
08-07-2009, 10:54 AM | #6 (permalink) |
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Join Date: Feb 2008
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I'm also running the 890 and just switched to a 14T pinion which gives me just under 2000 headspeed. I use the 3300 35c packs from hyperion and get just over 5 min flight with some 3d, but mostly sport flying and put around 80% back in on charge. the 4000 packs are about 120g heaver for both, but there should be plenty of power to offset if you want longer run times.
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I've never met a heli I couldn't crash. |
08-07-2009, 06:39 PM | #7 (permalink) |
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Join Date: Mar 2009
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Night, are you talking about what you get on 10S? How would 8S compare? I have the Neu 1515 2Y, bought it by accident.Anyway, it is 1100Kv, the Neu website recommends 10S, everyone with the scorion 1100Kv is running 8S? I see you running 10S with 890kv. I am trying to decide to keep the motor and go 8S or 10S. I have been told with 10S, my pinion would be too small. Any one have any advice.
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08-07-2009, 07:44 PM | #8 (permalink) | |
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Quote:
a 13 T pinion for a HS of about 2100 a 14T ~ 2270 @ 10S, a 10T would give you a HS of almost 2050 a 11T would get you up to 2250
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MSR x1 / mCPX x2 / 450 x4 / Chaos600 test bed / Chaos600 Air-Wolf / American WereWolf 800 / KFrame800/900/1000 / Assorted Fixed Wing JR9303 / JR9503 / Futaba10CHP |
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