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NextD - Rave 450 and 90 CJY Rave 450 and 90 Helicopter Kit - ND-YR-K001


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Old 10-23-2009, 12:38 PM   #1 (permalink)
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Default Headspeed???

Trying to log my headspeed with an eagletree v3 (150amp version) and the brushless rpm sensor.

I have a scorpion -10 with a 14t pinion, In the eagletree settings I have set it to 6 poles and a 10.71 gear ration ... is that correct?

With a hyperion 4s 2200 35C battery Im getting a whopping 3900rpm at 95% throttle curve to get the headspeed down to about 3200rpm I have to put the throttle curve right down to 60-65%

Is that normal or am I doing something wrong?

The data in the graph below was from a 60% throttle curve.
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Old 10-23-2009, 01:00 PM   #2 (permalink)
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You have to use 12,64 gear ratio for e-logger (177/14)
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Trex 500 8s, Furion 6 12s, Rave 450 4s, all with Microbeasts.
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Old 10-23-2009, 01:23 PM   #3 (permalink)
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oh, I read somewhere it was a 150t main gear ... that explains

I guess I'll put the throttle curve back up to 90% then to get about 3200 head speed.

Is 3200 about right?
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Old 10-23-2009, 01:40 PM   #4 (permalink)
 

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The T-Rex 450 has a 150 tooth main gear, the Rave is 177.

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Old 10-23-2009, 02:14 PM   #5 (permalink)
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this is where I got the info from :

http://www.completeheli.com/Rave-450...Kit-ND-YR-K006

ok so at 85% throttle curve Im getting 3200 but dropping off a bit towards the end of the pack so I'll put it up to 87% the tail seems to be holding better at the lower speed (its been drifting at 90 & 95% before)

what sorta range should my gyro gain be? (mini-g and 3500g)
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