RC Gyrocopter (oz8597)

About this Plan

RC Gyrocopter. Radio control sport model, for .30 power.

Quote: "Experimental R/C version of the famous Benson Gyrocopter. For .30 sized mills and proportional or reed equipment. This article is for the advanced modeller who wishes to experiment with a 'state of the art' project. RC Gyrocopter by Willy Rolf.

RCM readers are warned that this is not a tested and proven design, but rather, a 'state of the art' experiment on the part of the Author. As such, it will provide interested RCers with the results of the Author's engineering data on the subject as a springboard for further experimentation. R/C Modeler Magazine would be most interested in hearing from any readers who do attempt to carry this project to us conclusion.

To begin with, there is no Radio Controlled Gyrocopter today, or at least, there is no knowledge of one as of today. The plans illustrate an R/C model of the Benson Gyrocopter. It was designed and built in order to give a better picture of the size and installation of R/C equipment. The plan, therefore, is only an outline. It was drawn with the model builder in mind who would like to experiment with a great possibility of quick success. Close to scale of the full sized craft, only the horizontal stabilizer, wheelbase, mast, and vertical stabilbizer cross section have been changed. Building the model on a smaller scale is not recommended since the relationship between weight and stress will be negatively influenced.

Some of the more elaborate Benson types have an enclosed cockpit. This has been illustrated on the plans since this hood is necessary in order to facilitate housing the R/C system. The receiver, batteries, and servos can be bolted to the floor. The on-off switch can be mounted on the bulkhead. This will permit good accessibilily to the whole system.

The CG is in the rotor axle, and it is recommended that the R/C gear be mounted last in order that it may be positioned to achieve this CG point.

The model is flown like its big brother - by changing the rotor angle, rudder movement, and throttle adfustment. A self-neutraiizing Bellamatic II is shown for the rudder, while a trimmable servo-automatic was required for each of the remaining functions. A 3 channel proportional system would he ideal.

It is suggested that you complete the rotor section first in the construction of this model. The rotor has to turn counter-clockwise (looking from the top) in order to counteract the revolution of the engine. For the rotor, a simple bail bearing is adequate, although a pressure ball bearing would be preferred. The blades, themselves, can be made of either one piece of hard balsa, or of two laminated layers. In the latter case, a thin steel wire will have to be glued between the layers for stiffening..."

Note this is a low resolution plan.

Supplementary file notes

Article pages.

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