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Old 09-20-2009, 08:49 PM   #1 (permalink)
 

Join Date: Jul 2009
Question head speed help?
I have a blade 400 with a scorpion 2221-12 motor with 11 tooth pinion and a 90 amp esc

I need help with finding the head speed please? 2500kv motor 11 tooth pinion and 3 cell lipo

Thanks in advance!!!!

Adam
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Old 09-20-2009, 08:56 PM   #2 (permalink)
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Way too low!
Only in the 2,000rpm range.
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Jonathan Livingston Helicopter
Blade 400: E-flite 420H/35X ESC, AR6100e, HS65HB x 3, G401B/DS290G. (Ret.)
CopterX 450AE V2: 430XL/35X ESC, AR6100, HS65HB x 3, LTG2100T/HSG-5084MG.
T-Rex 550E V1 Classic Flybar: 600MX/BL70G, AR6200, DS610 x 3, Quark/DS650, 16t/520mm blades.
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Old 09-20-2009, 08:58 PM   #3 (permalink)
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BTW, what are you doing with a 90A ESC on there?
Overkill to say the least not to mention probably too heavy.
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Jonathan Livingston Helicopter
Blade 400: E-flite 420H/35X ESC, AR6100e, HS65HB x 3, G401B/DS290G. (Ret.)
CopterX 450AE V2: 430XL/35X ESC, AR6100, HS65HB x 3, LTG2100T/HSG-5084MG.
T-Rex 550E V1 Classic Flybar: 600MX/BL70G, AR6200, DS610 x 3, Quark/DS650, 16t/520mm blades.
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Old 09-21-2009, 12:41 AM   #4 (permalink)
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You'll most likley have to go up to 13 or 14 tooth pinion, do a search for "dark horse headspeed calc"
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Old 09-21-2009, 03:06 PM   #5 (permalink)
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Quote:
Originally Posted by Wolfpackin View Post
Way too low!
Only in the 2,000rpm range.
Is it okay to fly at this headspeed since I'm only hovering and learning FF?
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