Lucifer 2M (oz9839)

About this Plan

Lucifer 2M. Radio control electric powered glider. 2m sailpane. Wing area 600 sq in. Features modified Eppler E-193 airfoil for performance across a wide speed range.

Quote: "I’d like to submit plan for the Davey Systems Corp 'Lucifer'. It is essentially the 2-meter version of the 99in span DSC Prophet 941 (oz4098). I have not found this plan online anywhere so hopefully it will be good enough to add to your great collection on Outerzone. The plan was scanned from an original kit and as such could use some TLC from someone who could clean it up. The paper was browned unevenly and there are some spots on it from old rubber bands. Thanks, John"

Direct submission to Outerzone.

Update 12/12/2022: Added kit instructions, thanks to David Bader.

Quote: "I bought a Lucifer 2M kit by Davey Systems many ago. I still have the plans, instructions & model. I noticed you have the plan but not the instructions, so I scanned the sheets and attached them so you can have everything. From Louisville KY,"

Quote: "Davey Systems Corporation. DSC Lucifer. Building Instructions.

Welcome to the quiet world of electric powered flight!

The LUCIFER electric sailplane has been designed to accept any of a variety of 05 electric motors now available, either direct or reduced drive. It was designed to not only be easy to fly with a very wide speed range, but also very simple to build.

We suggest that you use the new cyanoacrylate adhesives, both the thin and gap filling types with an accelerator when required. All of the prototypes were bult with the 'super glues' as are all DSC kits. The results are always fine.

Prior to starting, look over the plans carefully to become familiar with the kit and the construction. You will note that there are two types of motor areas shown, direct or reduced drive. The prototypes have been flown with both types. Either one will give you great performance. There is more detail shown for the direct drive because there is little difference betwen the 05 motors now available except that the Astro 05 Cobalt is now as wide. If you plan to use the reduced drive with a folding propellor, you will have to determine the best way to mount it.

If you intend to use an 049 engine instead of an electric motor, an overlay showing the engine mount is included at the end of these instructions.

Wing: The wing is first because you will need it when you build the fuselage to assure that the formers are properly located. The 1/8 x 3/8 spruce spars are used with shear webs to give extra strength without adding the weight of sheeting. The airfoil has been computer-designed and is already used on both the Prophet and the Prophet 941. It is a highly modified Epler 192 with a 5% surface drop from 40% of the chord to the trailing edge. The wing has maximum coefficient of lift of .83 with a designed coefficient of lift of .51. The LUCIFER has a very wide speed range to not only allow you to drop the nose and cover a lot of area, but also to lift the nose to slow it down without stalling.

Some paper stretch may occur in the blue printing process. The parts are cut to the correct size and should be used to determine proper fit.

1. Build the center panel and wing panel at the same time. They will be joined later.

2. Cover the plans with plastic from your last roll of covering material. Trim and pin down the trailing edges after notching each one with a hacksaw blade to hold the rear of the ribs.

3. Using the ribs as a guide, position and pin the bottom spars... "

Supplementary file notes

Instructions.

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