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Details: Created on Monday, 14 January 2008 06:19; Last Updated on Friday, 18 January 2008 00:20; Written by David Engleson

DFS-Reiher III Reference List

November, 2007

LET Models (Czech Republic)
Scale - 1:3.5 Wingspan - 15’6” Weight -19 lbs Length - 7’-4”
For aero-tow and slope soaring

Fuse

Fiberglass with white gel coat - Special bracing at wing joiner tube and bottom of fuse at skid.
Removable 1/4” plywood radio gear and battery tray
Formed lead nose weight
Hitec eight channel receiver (HFD-08RD)
Charge switch with on-board battery checker (MPI)
Removable 1/4” plywood rudder servo tray
Tow release mechanism
(1) HS-81 servo for tow release (Standard servo would be better)
Multiplex plug in five-pin connector for elevator (male)
Six-pin connector from Radio shack
3,500 NiMH battery back
Aluminum skid (16 ga. x ½” wide) Seven Corners Hardware, Saint Paul

Rudder

Built up balsa rudder covered with Ultracote
Snap in place removable rudder
Aluminum control horns for “pull-pull” system control (Hobby-Lobby International, Inc.)
Symmetrical airfoil (CompuFoil 2000 program)
(1) HS-475HB servo mounted in fuse tray.
Kevlar thread pull-pull control

Elevator Stab

- Balsa sheathing (1/16”) on foam cores. Symmetrical airfoil (CompuFoil program)
- Covered with Ultracote
- Hard balsa spar
- (2) HS-85MG servos mounted in Hitec servo cans
- Two piece elevators
- Robart pin hinges (4 each elevator)
- Multiplex plug in five-pin connector (female)
- Two nylon bolts to attach to fuse

Wings

Balsa sheathing (1/16”) on foam cores. Modified M-Q3.0 airfoil (CompuFoil 2000 program)
Covered with Ultracote
Plywood and basswood spar (basswood top & bottom spar members, 1/8” plywood vertical spar continuous web
(2) ¼” plywood root ribs
Basswood leading and trailing edge spars
Hardwood dowel alignment pins
Tape hinges
Fiberglass spar tube formed over carbon fiber joiner rod
Groupner double high spoilers (Hobby-Lobby International, Inc.)
(2) HS-81 servos for spoilers (1 in each wing of course)
Balsa ailerons
(2) HS-85MG servos mounted in Hitec servo cans near center of aileron length

PVC Work Stand

¾” I.D. PVC parts from Menard's and Home Depot
Foam pipe insulation to protect fuse

PVC Dolly for Aero-towing

¾” I.D. PVC parts from Menard's and Home Depot
Foam pipe insulation to protect wings
Plastic wheels from Ax-Man supply
Carriage bolts for axles

Wing & Fuse Protective Bags

Any fabric store
Velcro – (Not the sticky stuff)

General Supplies & Stuff

Balsa Sheathing – www.balsastore.com

Batteries – www.cheapbatterypacks.com

Charge Switch, servo leads, and much more – MPI www.maxxprod.com

Express Composites, Inc. Minneapolis (612) 789-8621 OR www.cstsales.com/
AdTech Epoxy Resin & Hardener, different weight fiberglass, kevlar, and carbon fiber cloth, Mixing accessories, cups, sticks, & gloves for working with epoxy. Good people.

Foam: