About this Plan
Gull. Towline glider model.
Quote: "The Gull, by Paul Del Gatto. Complete full-size plans for a Towline Glider designed for the new AMA class.
With the inclusion of the Nordic A-1 glider class into the Academy of Model Aeronautics contest rules this year, a new type of Towline Glider will appear on the American modelling scene. A-1 gliders are relatively small in size, are easy to fly, and can be flown on fields where larger ships might prove hazardous. In addition, their low cost makes them ideal models for beginners or young modellers who must watch their building budgets.
From a designer's standpoint, an ideal A-1 should approach the maximum limits of surface area allowed by the rules and, at the same time, come as close as possible to the minimum weight set up by the regulations. The 'Gull' meets both these requirements, Our original ship came within .12 ounces of the minimum required weight of 5.08 ounces and it lacks just a few square inches of having the total allowable area of 279 square inches.
Construction is simple and durable and we have found the Gull to be an excellent, consistant flyer.
Fuselage and Auto-Rudder: Begin building the fuselage by cutting the vertical keel from one piece of hard 1/8 sheet balsa. The full-size plans will speed construction by eliminating the need to enlarge parts. Cement the horizontal keel pieces in place and then the formers. Next, the wing platform is added. It is made of two layers of 1/16 sheet balsa, cross-grained for strength. A wing seat is made from 1/4 in soft balsa and shaped to fit the curvature and dihedral angle of the wing. Cement this piece in place after it is carved to shape.
The nose block is simply two pieces of 1/4 in sheet balsa cemented to the ver-tical keel, and carved roughly to shape. The 1/32 sheeting is cemented in place next and when dry, sanded with coarse, then fine, sandpaper until the nose-block and sheet covering blend.
Make the auto-rudder mechanism from .050" wire and 1/16 brass tubing. Bend all wire parts as shown on the plan. Next, fit the 1/8 in ID soldering lug pivot over the center member of the assembly and fasten it securely in place. This entire unit pivots about a 1/8 diameter dowel that goes through the lug. Work carefully to obtain a smooth working mechanism. Add the fixed tow hooks, bent from .040 wire, which serve to keep the movable hooks aligned.
Now, the fin is carved from 1/8 sheet and sanded to a streamline section, and the rudder tab is constructed as shown on Plate 1a, (Page 16). After the fin is securely cemented in place on the fuselage and the rudder me-chanism has been constructed, hook up the rudder and the actuating me-chanism by fastening a string to one of the loops. Which ever loop has the greatest pivoting radius about the center dowel should be selected..."
Direct submission to Outerzone.
Greetings. Here is the Gull, a 50in span A1 towline glider by Paul Del Gatto, from Flying Models August 1957. Scan by 50+ Air Years. You already have its offspring, the Caprice (oz10896).
I did the obvious job of cleaning and splicing together the four magazine plan pages, but it is such a tangled mess that I have also done a rearranged version that is more legible, if not quite 'period'. I am sending both. Use whichever you prefer (or both). Also attached is page 1 of the article; the second page was not scanned and I have not been able to find it.
About Caprice: as the OZ comment says, "This glider was not designed as the Caprice by W Kuhlman in 1990 but was designed as the Gull by the legendary Paul Del Gatto and published in the August 1957 issue of Flying Models magazine." I concur - I can see absolutely no difference between the two; Caprice is a clear case of plagiarism.
Update 31/08/2020: Added complete article (now inc page #2), thanks to MelGray.
Supplementary file notes
Alternate plan (original layout).
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 firstname.lastname@example.org
User commentsBeautiful job on the plans for the Gull. I am attaching the missing second page of the original article.
Mel Gray - 31/08/2020
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.