About this Plan
Septalette. Radio control sport model.
Quote: "The Septalette. 1/4A beauty, by Stan John.
This plane comes from New Orleans and represents a shrunken or non-Sanforized version of a popular Deep South midwing design, the Septal (oz9581). Named the Septalette in honor of its distinguished Cajun forbears, it is a logical extension of its larger relatives and displays the same excellent qualities. It is an advanced form of 1/4A R/C and will give the builder many hours of enjoyable flying. The design is very stable and can be flown in relatively confined areas such as playgrounds and ball parks. For ROG work, pick a nice Sunday and a large shopping center parking lot.
The originals provided the author with many summer evenings of flying at the playground down the street. Beats waiting around for a suitable Sunday and really allows one to wring out the equipment with many, many flights. We have worn three engines down to nubs in this manner. The larger versions of this ship have been primarily pulse birds also - rudder only, dual pro, and coupled aileron-rudder types.
Basic flight characteristics of all types have been amazingly similar, All have been exceptionally stable ships, sensitive to oommands but not erratic. Built as described, the Septalette will do well for you.
CONSTRUCTION: Construction of the Septalette is very simple and straightforward - weight is so important in ships of this size that complexity must be abandoned. A matter of 6 ounces will mean the difference between a sweet-flying bird and a real nasty one. Keep it simple and light and strength is no problem (within limits, of course).
The fuselage is a simple box. Construct the two sides and join as shown using doublers where indicated. After completion of the basio fuselage structure, it is wise to fiberglass the nose. Fiberglass resin is used over the entire nose section and inside tank and battery compartments. Light fiberglass cloth is used on the bottom of the nose from the landing gear forward.
The LG is constructed of 1/16 wire or dural as preferred and is of the knock-off type. Trexler wheels were used on the originals because of their lightness and shock-absorbing qualities; however, if much of your flying is from concrete, it would be wise to use l-1/4 sponge wheels for longer life.
Rudder and stab are constructed of medium and soft balsa respectively. Do not omit the 1/16 x 1/8 hard balsa stiffeners into the stab. They do much to prevent warps. The wing trailing edge is notched for the rib ends. The wing center section is sheeted on top only..."
Septalette, Grid Leaks, March/April 1961.
Direct submission to Outerzone.
Supplementary file notes
Article pages, thanks to RFJ.
Did we get something wrong with these details about this plan (especially the datafile)?
That happens sometimes. You can help us fix it.
Add a correction
Do you have a photo you'd like to submit for this page? Then email email@example.com
User commentsNo comments yet for this plan. Got something to say about this one?
Add a comment
* Credit field
The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.
This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.
© Outerzone, 2011-2020.
All content is free to download for personal use.
For non-personal use and/or publication: plans, photos, excerpts, links etc may be used, provided that full and clear credit is given to Outerzone with appropriate and specific direction to the original content i.e. a direct hyperlink back to the Outerzone source page.
Unauthorized use and/or duplication of this material without express and written permission from this site's owner is strictly prohibited. If we discover that content is being stolen, we will consider filing a formal DMCA notice.