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02-23-2010 01:01 AM  10 years ago
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helipilot2

rrNovice

Greenville, nc

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Sceadu RPM
I am trying to figure out what battery size to use and I need to know what Rotor RPM do I need. I am converting a Sceadu .50 into electric for scale flying. I got a motor already I want to use 1200kv with an 80amp esc.

With a 10S Lipo (2 5S batteries in series) the calculator says it will turn 5043 with the 10T pinon. With one of the 5S alone the calculator says the rotor will turn 2522 RPMs.

So the question really is: In a Sceadu, what is a "good" Rpm for scale? Or how many cell do I really need?

Thanks!!!
Can fly the big ones..having a little trouble with the little ones :-)
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02-23-2010 02:42 AM  10 years ago
c54fun

rrApprentice

Dallas Texas

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For scale flying you could use 1700 to 1800 rpm. probably even lower. I think because you have an 87 tooth main gear you would want a lower kv motor.

Example.

Scorpion 4025-630 with a 10tooth pinion along with an 8s battery would be pretty nice. You could run it around 17 to 1800 rpms.

This is just an example but an 8s set up would be nice.
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02-23-2010 11:46 AM  10 years ago
helipilot2

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Greenville, nc

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Hi! Thanks for the reply...

Can I tune down the rpm with the throttle curve without overheating the esc/motor?

8s will give me higher RPM; right? Why then not stay with 5S to keep rpm down? 8S= more torque/power?

Thanks!
Can fly the big ones..having a little trouble with the little ones :-)
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