Avro 504K - Free flight scale gas model. 1/12 scale. Contest winning model, from December 1949 Aeromodeller.
Quote: "SURELY no other type of aircraft was so much responsible for the development of "airmindedness " in this country as the AVRO 504 K.
Originally produced in 1915 to train pilots for the RFC the 504 appeared in several versions, the K type being the most well-known. From 1932 to 1938 dozens of these 'Old Avros' - as they were affectionately known - toured the country giving joyrides at 5/- a flight. Probably more people had their first experience of flying in the 504 K than in any other type of aeroplane up to the end of 1938, at which time these grand old machines were no less than 23 years of age.
Our cover painting depicts a typical example formating with other machines of Alan Chobham's famous circus.
It is said that the stability characteristics were of such high order that in the event of difficulties in flight it was only necessary for the pilot to remove his hands and feet from the controls, and the machine would automatically return to straight and level flight. What better machine then could one choose as the subject for a flying scale model?
The performance of the model has far exceeded my most conservative estimates, and although it has only been entered in three competitions, this model has so far collected the Aeromodeller Champion of the Exhibition Trophy (Northern Models Exhibition, Manchester); 1st Prize in the Flying Scale Section at the same exhibition; 2nd Prize in the Model Aircraft Section at the Manchester and Districts Society of Model and Experimental Engineer's Exhibition.
Although the prototype has always been flown with an Amco .78 cc Mk 1, any motor of similar power ans weight should be satisfactory. Throughout the design my aim has been strength and durability, and consequently at first glance it may seem rather heavy. Let me hasten to assure readers, however, that the flying and gliding speeds are only about half of that of normal power duration models of similar span, due to its relatively large large wing area. Th e wings are arranged to knock off in the event of a crash, all bracing wires being 1/32 square rubber... "
Update 24/06/2016: article pages, text & pics added, thanks to RFJ.
Article pages, text & pics.
Did we get something wrong with this plan? That happens sometimes. Help us make a correction
Do you have a photo you'd like to submit for this page? Then email email@example.com
* 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, 2011-2019.
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.