Old Faithful (oz6270)
About this Plan
Old Faithful. UC sport trainer model for .15 - .19 diesels. By K Hagen, MAN July 1956.
Quote: "DURING my military service, I was asked to give a course for some of my fellow soldiers and teach them a little about how to build and fly a U-control trainer. I accepted this invitation and started to design a suitable plane, having especially three things in mind: it had to be easy to build for a newcomer to aeromodeling, yet should prepare him for building more advanced models later; it had to be sturdy in order to stand rough treatment by a novice flier; also, it had to look a little like an airplane.
After some thinking and drawing, I finally evolved the plane described and it fulfilled the requirements very well.
None of the 12 boys participating in the course had ever built or flown a U-control model. After about three weeks of spare-time work, using only simple tools, they all had their planes built.
Then we started to fly. In the beginning it seemed more like digging as they just went up and then down into Mother Earth. It really surprised me how well the models stood up. The weakest point is usually the joint between the fuselage and wing but the reinforcement with silk usually left the models in one piece after the 'plowing'. After a while the boys started to learn and some became really good.
At the competition the Mr Force sponsored at the conclusion of the course, the most proficient performed loops, inverted flying and even horizontal eights with this trainer in spite of strong wind. I considered the result quite good, since five weeks before they had never had any contact with U-control, building or flying.
The original model was powered by a Norwegian David-Andersen Diesel of 2.5 cc. The Torpedo .19 shown is optional. This will give a little Old Faithful more lively airplane although it still should not be too difficult to handle. In fact, it will take a lot of different engines in the group between .15 and .19.
Building should be straightforward, although you should take care that the distance between engine bearers suits your engine. Also, you will need the added strength gained from reinforcement with silk or nylon at the points indicated on the drawing. "
Direct submission to Outerzone.
Supplementary file notes
Article, thanks to theshadow.
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.