Sperry Messenger (oz5072)
About this Plan
Sperry Messenger. Rubber scale model biplane. All-sheet wings.
Quote: "Turn the clock back a few decades with a famous old bipe that's easy to build. Crank in 400 turns of quiet type power and the nearest clearing is all you need. 20 inch span, realistic and a good way to get a flyer started. Sperry Messenger, by John Blankenship.
In 1920 the Lawrence Sperry Aircraft Company won a US Army contract to build the 'Messenger', which had been designed by the Army Air Service Engineering Division. The Messenger was destined to be widely used for experimental programs and became a well remembered aircraft, representative of its era.
Some simplifications were made in the scale views to suit the type construction used on this model and dihedral was increased. The design is well suited for rub-ber powered flying, having simple lines and excellent Proportions for all types of flying scale models.
Fuselage: Trace the fuselage side outline onto a sheet of white paper for a pattern. Cut both fuselage sides from the same sheet of uni-form quarter-grained 1/32 balsa. Select the wood carefully to insure good fuselage alignment. Pin the two sides in position on the plan and glue the 1/16 square side stiffeners in place, using the marks on the plan for alignment. Glue the 1/8 balsa pieces P and the 1/32 rear motor peg reinforcements in place. The sides can now be removed from the plan and the side stiffeners trimmed. Cut the 1/16 sq and 1/16 x 1/8 fuselage cross members to length, using the fuselage top view as a guide, and begin assembly by pinning the inverted side pieces over the plan.
Building the basic fuselage directly on the top view allows frequent and easy alignment checks. Glue in the forward fuselage cross members and pin in place. After the forward fuselage has thoroughly dried, pull the rear ends together and glue, checking alignment carefully. A clothespin can be used to hold the rear ends together while the glue dries. Now glue the remaining cross members in place.
The landing gear struts and wind center-section struts should be bent and bound in place with cotton thread. Wrap the wire joints with fine copper wire..."
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
Verville-Sperry_M-1_Messenger | help
see Wikipedia | search Outerzone
ScaleType: This (oz5072) 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/Verville-Sperry_M-1_Messenger
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, 2011-2021.
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.