Super Sicroly II oz9817


Super Sicroly II - plan thumbnail image

Super Sicroly II - completed model photo

Submitted to Outerzone: 15/02/2018
Outerzone planID: oz9817 | Filesize: 1000KB | Format: • PDFbitmap | Credit*: Circlip, RFJ


About this Plan

Super Sicroly II. Radio control pattern plane for .60 power.

Quote: "THE World Championship model Super Sicroly II was specially designed for the FAI aerobatic schedule. After doing well in the 1971 World Championships in the USA (4th place), I made a few changes to the original model and have been able to improve its performance. The resulting Super Sicroly II incorporates all I have learned about acrobatic RIC model aircraft and, looking back at the contest results, it could be said that it is the ideal model for the FAI schedule. A speciality of this model is its performance in the roll (slow roll, rolling circle and quick roll), and the knife edge on either side. In knife edge flight the power of the motor is an important factor. Therefore, the model is designed for a powerful motor, although the model will still fly well with a less powerful motor. The landing characteristics of this model are really fantastic. With up elevator, it can land as lightly as a glider. There is no need to worry that the Super Sicroly II will stall without warning, it may drop its nose, or at the worst veer slightly to one side or the other, but that's all.

In spite of its excellent and forgiving flight characteristics, I would not advise this model for the beginner. It is safer to learn to fly with a more appropriate model, but in the hands of an experienced contest flier, the Super Sicroly II is sure to unnerve the opposition. The schedule can be flown so precisely that even in a cross wind the effect of every gust can be controlled. If possible, always fit a retracting undercarriage. This was planned and fitted in the prototype Sicroly and only by using this can one take full advantage of the model's aerodynamic qualities. I will start with some building hints; I am assuming that the builder already has some experience, and like most modellers, has personal building techniques that he swears by.

The Super Sicroly II, as previously mentioned, is by no means a beginner's model but on the other hand the plan is so explicit that any modeller with some experience will find the construction no problem. It is important that all the correct angles and dimensions are accurately measured and not guessed. Attention to this produces a stronger and better model.

Fuselage. Care must be taken to ensure that the fuselage sides and fin are built squarely. Every modeller has his favourite motor, so the motor mounting can be modified to suit any power plant. The same applies to the fitting of the retract gear. I suggest that the canopy hatch is made removable and the tank held in place by foam rubber packing..."

Super Sicroly, RCM&E, August 1974.

Direct submission to Outerzone.

Update 13/03/2018: added additional article (Model Airplane News, May 1974), thanks to RFJ.

Supplementary files

RCME article pages, thanks to RFJ.
MAN article.


Did we get something wrong with this plan? That happens sometimes. Help us make a correction


oz9817 datafile

Super Sicroly II  
by Hanno Prettner
from RCME
August 1974 
63in span
Tags: IC R/C LowWing
all formers complete :)
got article :)


Do you have a photo you'd like to submit for this page? Then email

User comments

No comments yet for this plan. Got something to say about this one? Click here to 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.


Terms of Use

© Outerzone, 2011-2018.

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.