Breda 39 (oz16403)
About this Plan
Breda 39. Free flight scale model for rubber power. Wingspan 27 in.
Direct submission to Outerzone.
Quote: "BREDA BA-39
27” SPAN
DRAWN 16 OCT 2024
This is one of those early (1934) aircraft used for civil and military liaison/observation aircraft. A sleek little aircraft with a vertical fin/rudder that meets my kinda unusual look! I loved it.
CONSTRUCTION:
FUSELAGE -- Box with upper formers. Cowl is stackled sheet balsa cross grain for strength.
WING -- Laminated wing tips 3 laminations of 1/32”x3/32” around templates from foam board with the edges waxed using candle wax from old candle. Rub it on good and heavy to help release the balsa after it’s dried. Cracked rib construction using 1/16” sq and sheet balsa. With 3/32” sq L.E.
EMPENNAGE – Horizontal stab is laminated with 3 lams of 1/32”x3/32” strips. They will need to be soaked good in hot water for a few minutes to make them very flexible, go slow around the tight wing tip shapes. You could use the same template once the first side has dried. Then join them two panel together with 3/32” sq and sheet to complete the HZ stab. The vertical stab is 3/32” sq L.E. and laminated (3) llams 1/32”x3/32” T.E. with vertical spar of 1/16” sheet. The rest is built in the air with the 1/32”x1/8” strip ribs add to the outside of the vertical spar.
Thanks to Steve and Mary lor this great site! Keep up the great work!
Tom Akery/Sky9pilot"
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ScaleType: This (oz16403) is a scale plan. Where possible we link scale plans to Wikipedia, using a text string called ScaleType.
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User comments
Hi Steve. Nice looking plane. Tom has a good eye for choosing them. Would like more info on the wing, like the spars and ribs. It would make it easier to build, especially for a novice. Thanks, JohnJohn Washam - 20/11/2025
John,
My apologies for not making this clearer. I tend wing it with what I have in my head during construction. It has been pointed out to me just recently. To help you out John, If you have a good ruler, just make a measurement of the wing root airfoil on the plan's side view. Then take off 1/16" from the top and bottom of the airfoil which leaves the size of the root dimension of the spar's height in 1/16" sheet and taper to the 3/32" tip height. I hope this helps in you understanding. Often I will place the rear spar after the upper sliced rib is in place and measure the gap between top and bottom of the ribs and cut the spar and slide it into position. I'll try to do better in this area and thanks for looking at my plan.
Regards,
Tom Akery/Sky9pilot
Tom Akery - 21/11/2025
John,
I left out the great tutorial by Mike Stuart on his site: https://www.ffscale.co.uk/rees.htm
It's a great explanation how the Rees' Sliced rib wing is constructed.
Thanks again Tom Akery
Tom Akery - 21/11/2025
Oops,
John,
I assumed I used the Sliced Rib construction on this plan. I did not! Rather I used the "Cracked Rib" wing construction. This method makes a quick and light wing. Here's a tutorial on this method on my site, stickandtissue.com : https://www.stickandtissue.com/forum/cgi-bin/yabb2/YaBB.pl?num=1750020740
Regards, Tom Akery/Sky9pilot
Tom Akery - 21/11/2025
Hello, if I may ask I have one more request. I’ve been looking everywhere for 3 views that show a cross section of the fuselage shape at separate points of this aircraft, it is the Stout ST-1. I believe it would make a very good and “floaty” model with the wide wing chord, but there is just very little information on it that I believe you would be the right person to ask.
Gage Van Vranken - 23/11/2025
Thanks for all the info, Tom. Helps a lot. It's a great looking plane.
John Washam - 23/11/2025
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- Breda 39 (oz16403)
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Notes
* Credit field
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Scaling
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