RunRyder RC Helicopter Topic - Blade 400 3D Main gear tooth count

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e-E-Flite Blade MSR CP CX MCX 400-3D > Blade 400 3D Main gear tooth count

jason46
Senior Heliman
Location: MI

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Who knows the number of teeth on the main gear? I need that to calculate some head speeds.

Thanks

06-29-2009 08:39 PM

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GNBR
Heliman
Location: CENTRAL MICHIGAN

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140

06-29-2009 09:59 PM

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jason46
Senior Heliman
Location: MI

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Thanks!

I calculate my head speed with the following.
(main gear 140)(pinion 10) = 14 final ratio
(voltage 11.1)(throttle .9) = 9.99V effective voltage??
(3800kv)(9.99V) / 14 = 2712RPM

I was posting in the Furion forum asking how much actual RPM would differ from calculated.. assuming that is right.

06-29-2009 10:29 PM

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HeliFisher
Veteran
Location: Verdi , Nevadafornia

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140t?

I think the Blade400 runs a 200t maingear.

I'm running a Hacker A20-6XL motor with a 17t pinion, and I turn a 3000 rpm headspeed with 325mm CF main blades. That should work out on the headspeed calculator, although I don't recall the kV of the motor. 2400kV maybe?

Hope that helps!

The less a man makes a clarative statement, the less likely he is to look like a fool in retrospect.

07-01-2009 05:56 PM

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jason46
Senior Heliman
Location: MI

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140 sounds right, the main gear on the furion is 150 and it is a bit larger.

07-01-2009 07:17 PM

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HeliFisher
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Location: Verdi , Nevadafornia

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good luck

The less a man makes a clarative statement, the less likely he is to look like a fool in retrospect.

07-01-2009 07:25 PM

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GNBR
Heliman
Location: CENTRAL MICHIGAN

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I counted them on an old gear. I was trying to calculate the difference in HS between my 400 and my 450. I can hear the difference. Ended up being almost 400 RPM. On one of those online HS calculators.
Gary

07-01-2009 10:59 PM

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stocky
Key Veteran
Location: MA, USA

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