Originally Posted by orck
I was thinking about this motor QRP-HYP400-N
can you suggest me a folding propeler and a lipo battery for this unit?
Motor looks good for use in Guppy.
Folding propeller (Garupner, Robbe, Aero naut.) 6x3" (15/7cm), direct drive (No use of gearbox!)
2 cell Li Po battery (7,4V) from 800 to 1200 mAh (2S1P)
DONT use 3 cels Li-Po (11,1V) as will burn your motor in short period....
Note: your ESC should support 2 Li-Po cells in order to disconnect motor, when battery voltage drop under alowable value. Li-Po cells are more delicate than NiMh cells!!!
You should allow for cooling air to flow trough motor, specially over the brushes, and exit from model. Motor will run hot if you force it contunuously over a minute. But in one minute you will anyway reach decent altitude to stop engine and start to chase thermalls.
Look at your local Hobby shop or at some Internet stores for the equipment.