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Next-D › Scorpion 2221-8, which pinion
04-23-2011 10:16 PM  7 years agoPost 1
kawaznic

rrApprentice

Bréval, FRANCE

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Hi,
Just received my new rave 450FBL.
I use my older 450Pro scorpion 2221-8 motor with 13T pinion.

But it seems not to give enough head speed with my beastX.

So could someone tell me which best pinion to use to have higher headspeed ? 14 or 15T.

Thanks a lot, Nicolas

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04-23-2011 10:40 PM  7 years agoPost 2
Heli 770

rrProfessor

USA.

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You have a larger main gear now, 177T vs. 150T, I'd go with the 15T.

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04-23-2011 11:09 PM  7 years agoPost 3
mystar60

rrVeteran

Clifton, NJ

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check this out:
http://www.readyheli.com/headspeed-calculator.html

This will help you figure out what you are looking for.

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04-24-2011 12:16 AM  7 years agoPost 4
MarshallB

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Middle Arkansas

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3S or 4S?


CurtisYoungblood.com
Next-D
Spyder Batteries

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04-24-2011 02:57 PM  7 years agoPost 5
kawaznic

rrApprentice

Bréval, FRANCE

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Hi, Rave configuration is 3S at this moment.

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04-24-2011 10:32 PM  7 years agoPost 6
PetterS

rrApprentice

Gothenburg, Sweden

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For the Rave 3D the 2221-6 is a choice for 3S. The 2221-10 is for 4S. Then they found that 2221-8 worked as a power option for 4S. You really rev the -8 engine over spec on 4S but it seems to work.

Or the -8 with a Large pinion.

I have only experience with -6 and 3S and -10 on 4S. Both work well. For FBL 2900rpm works well for me.

BR
Petter

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04-24-2011 11:19 PM  7 years agoPost 7
kawaznic

rrApprentice

Bréval, FRANCE

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Ok,

I have ordered a 15T pinion.
I think it should be ok with it.

I will let you know.

Nicolas

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