SLIDE IN POWER UNIT FOR ELECTRIC POWERED PLANES
By Don Granlund
The following is a slide in power unit, which I use on my 1/4 Scale EAA Biplane. The advantages to using a slide in unit are.
The pictures below are for my Zap-it
This is another Astro 40 powered plane with a slide in unit running on 20 cells. This plane is on its third year of flying and the slide in unit has held up good. Bolts in the sides of the fuselage hold in this unit. Like the unit above you only have to connect the speed control to the receiver. The rest of the power unit is contained on the slide out tray. The arming switch and charging jack are on a removable plate on the side of the cowl. The speed control is on the bottom of the tray in direct airflow coming in the cowl inlet and out though the cockpit. The motor is mounted in a rolled plywood tube in a solid balsa block. This works out good for this plane but if I wanted to put the unit in another plane I would have to use the same nose shape.
If you have any questions you can contact me at firstname.lastname@example.org
MARCEE Minnesota Area R/C Electric Flight Enthusiasts