RCU Forums - View Single Post - School me on choosing the right Lipo plz
Old 07-02-2009, 01:18 PM
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amadio1
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Join Date: Oct 2008
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Default School me on choosing the right Lipo plz

Hi guys. Im making the switch from 25 years of gas and nitro flight over to the electrics. Ive gotten a ton
of help from the people on this forum, and I have a few more questions.

Ive chosen the plane I want to pick up, and found one at my LHS.
http://www.electrifly.com/parkflyers/gpma1580.html
The EP Reactor Bipe
35" wingspan
about 1000g

Ive done alot of searching and a TON of learning and I belive I found a suitable outrunner for it
Kv: 910rpm/v
Turns: 8
Resistance: 75
Idle Current: 1.12A
Shaft: 4mm
Weight: 112g
Rated Power: 310w
ESC: 30A
Ive read many reviews on the motor as it seems to be of good quality and people claim it
can pull a 1000g 3D plane without a problem.

MY QUESTION: Now that I have my plane size and weight, and the motors specs... is there a formula
for deciding how much battery I will need?
Is there a formula for choosing the Mah and C of battery to use in a given application?