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Copyright © 2015 Jim Young and T&J Models 

T&J Models 

R/C Model Designs By Jim Young 

9356 Wendover Ct. 

Brighton, MI 48116 

www.tnjmodels.rchomepage.com 

 

Monocoupe 90A 

 

 

 

Speed and Comfort for the Common Man 

 
In the  late 19020’s , Don A. Luscombe’s Monocoupe introduced affordable and  
convenient performance to the light  airplane market. Previously, this market was 
dominated by large, expensive, open-cockpit biplanes. The Monocoupe was compact and 
offered a closed cabin for comfort and convenience. The reverse curve of the fuselage 
became one of the signature characteristics of this family of sporty planes.  Much lighter 
and cleaner than other aircraft of the time, the Monocoupes were also popular for racing. 
The longer and wider Model 90 was introduced in 1930, the A version having a 90hp 
Lambert R-266 radial engine.  
 
Our Monocoupe is designed for a 30mm outrunner and 3S 3300mAhr flight pack.  
Extensive use of laser cutting and self aligning structure provides a straight and light 
airframe with operational flaps.
 

 

 

Summary of Contents for Monocoupe 90A

Page 1: ...s The Monocoupe was compact and offered a closed cabin for comfort and convenience The reverse curve of the fuselage became one of the signature characteristics of this family of sporty planes Much li...

Page 2: ...ate 4 layers of 1 16 balsa for the stabilizer and fin outlines The finished laminations should be 1 8 thick Laminate 4 layers of 1 16 balsa for the wing tips The finished laminations should be approxi...

Page 3: ...ould be toward the L E and for the left wing the joiners should be toward the T E Locate the spar assemblies over the plans The bottom main spar will be slightly off the board so just pin it to hold i...

Page 4: ...1 8 ribs on each side The flaps are hinged on the bottom with the covering material and the ailerons are hinged along the top Fuselage Prepare the top and bottom stringers as shown on the plans A sepa...

Page 5: ...5 32 music wire and the rear gear from 1 8 music wire Fit F3 and F4 onto the cabin floor Fit the F9 assembly and F10 in place on the fuselage floor Capture the two landing gear wires with the two F11...

Page 6: ...to position it Use epoxy to glue the forward spar box in place Glue R1 F4A s and F5A s in place Glue the door frame pieces D1 through D9 in place using 1 64 plywood to space them Glue the front and re...

Page 7: ...Laminate 8 pairs of C4 from 1 8 balsa Assemble the cowl structure Plank the cowl with 1 16 or 3 32 balsa Glue the cowl rings on the front and sand smooth Two layers of 1 8 balsa are sanded to shape fo...

Page 8: ...uts and install to the wing and fuselage The outboard ends of the struts can be trimmed as necessary Rough up the music wire bits and apply slow cure epoxy to them Reassemble the struts making sure th...

Page 9: ...Flap to Elevator Mix 20 down Flying The Monocoupe 90A is not a hard plane to fly but it is not a trainer being a tail dragger Take offs require rudder input to keep it tracking straight Once in the ai...

Page 10: ...ith the flaps at half or full flybys are very slow Just make sure to throttle back up before fully retracting the flaps Landings can be performed with or without flaps I like to keep a little power on...

Page 11: ...AGREE TO HOLD HARMLESS AND INDEMNIFY Jim Young and T J Models and their agents and employees for any and all liability for any loss damage injury or death to myself or to any other person or property...

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