De Havilland Puss Moth (oz7044)
About this Plan
DeHavilland Puss Moth. Scale model for rubber power.
Quote: "Some aircraft are made for modeling. This is one of them. A simple Rubber Scale ship to fly in the calm of twilight. DeHavilland Puss Moth, by Ray Booth.
The prototype Puss Moth, G-AAFA, was designed and built by deHavilland in England during the early part of 1930, and was destined to make a considerable contribution towards the progress of civil flying all over the world. The first machine was fitted with the (then) new DH 120hp Gipsy 111. It was a four-in-line inverted aircooled engine, though later models were fitted with the Gipsy Major of 130 hp. These later models differed quite considerably from the first ship, with welded steel tubular fuselages, instead of plywood covered wood construction.
The airplane was designed as an option-al two or three place ship, the third seat being fixed to rails, which enabled it to be positioned alongside and slightly to the rear of the second seat. The wings and tail were quite conventional in construction, wood with fabric covering, and the wings were capable of being folded about the rear spar attachment point, supported on vee struts. One rather ingenious device for the period was the airbrake. This was achieved by swivelling the main landing gear fairing through 90 degrees, which produced quite an appreciable amount of drag. This idea was retained on two later designs. the Leopard Moth and the Hornet Moth.
The Puss Moth had many fine long distance flights to its credit, particularly those of the late Jim Mollison and Bert Hinkler (an ex AVRO test pilot, incidentally). Hinkler made a 10,000 mile flight in the Fall of 1931 from New York to London via the South Atlantic crossing. In March 1932, Medison flew a Puss Moth from the South of England to Cape Town, South Africa, in four days seventeen hours, and in August the same year he flew from the II& to Newfoundland on the first solo flight across the Atlantic from east to west.
About 260 ships of this type were built in England, with a maximum speed of 130 mph, crusing at 105 and landing at 45 mph. Span was 36 foot 9 inches.
The Model Design: Unlike most rubber powered scale ships, the tail assembly is scale outline, thereby preserving the attractive outline of the ship. The dihedral has been increased slightly, for lateral stability considerations. The general constructional design was based on relative simplicity, but maintaining a realistic appearance when completed. The original model had a weight of 1-1/4 ouunces ready to fly, which included a small cube of clay (1/4 in cube) fixed behind the balsa nose block inside the cowl. Power was supplied with one loop of 3/16 x 1/24 rubber, 13-1/2 in long.
Construction: A flat building board of not less than 16 x5 inches is required, though a bigger size is desirable in order to maintain a reasonable building schedule. There is no particular building sequence for the major components, most modelers have their own preferences regarding which items are built first. However, when transfering the various outline shapes by your own favorite method to the balsa sheet (1/16 medium), take particular note of the grain direction indicated for the various parts on the plan. You might save a little on the wood by placing things differently, but you lose patience later when they split! On the subject of glue, the modern PVA white glue will give a good warp-free structure, even if it does take longer to dry!
Fuselage: First cover the plan with wax paper or rub wax or soap on the drawing at all the joint positions. Select some reasonably hard 3/32 sq balsa for the basic fuselage structure, then pin down the top and bottom longerons over the plan as illustrated at the top right-hand side of the plan. Note that both sides as assembled together, one on top of the other, for accuracy. Add the various diagonals and verticals to complete the basic sides, plus the 1/16 strip for the rear motor peg. Remember that one of these strips must be pushed down to the level of the building board, but the upper one must he fitted flush with the top of the uppermost fuselage side..."
Ray Booth's Puss Moth from Flying Models magazine issue 06-74.
Direct submission to Outerzone.
Supplementary file notes
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
De_Havilland_Puss_Moth | help
see Wikipedia | search Outerzone
ScaleType: This (oz7044) is a scale plan. Where possible we link scale plans to Wikipedia, using a text string called ScaleType.
If we got this right, you now have a couple of direct links (above) to 1. see the Wikipedia page, and 2. search Oz for more plans of this type. If we didn't, then see below.
ScaleType is formed from the last part of the Wikipedia page address, which here is https://en.wikipedia.org/wiki/De_Havilland_Puss_Moth
Wikipedia page addresses may well change over time.
For more obscure types, there currently will be no Wiki page found. We tag these cases as ScaleType = NotFound. These will change over time.
Corrections? Use the correction form to tell us the new/better ScaleType link we should be using. Thanks.
Do you have a photo you'd like to submit for this page? Then email firstname.lastname@example.org
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.