Fournier RF4D (oz7174)


Fournier RF4D (oz7174) by Bob Peck 1972 - plan thumbnail

About this Plan

Fournier RF4D. Scale powered glider model for single channel RC.

Quote: "A single channel .020 powered sailplane for relaxed flying. Fournier RF4D by Bob Peck.

The Fournier model is a dream - it has clean flowing lines, cowled in engine, and flys as good as it looks. The model started a couple of years ago when I saw an article on the Fournier in AOPA Pilot Magazine and I wrote to Phil Paul of Aero Sport in Lanchester, California, who represents Sportavia, the German company that manufacturers the Fournier plane. Phil was able to obtain some 1/20 scale three view drawings of the Fournier RF4D, from the factory in Germany, which I used to make my 1/10 scale drawings.

The full size plane was designed in France and is built in Germany by Sportavia. It is a single seater with a single retractable main wheel and small outriggers on each wing. It is powered by a .40HP Volkswagen engine which gets her up where the fun begins.

The RF4D is stressed for aerobatics except for certain high speed manuevers and has a glide ratio of 20 to 1, which is good considering it is carrying th extra weight of an engine. Its cruise speed is 112 mph and stall speed is 4omph.

It was in a Fournier RF4D that the Czech pilot, Mira Slovak, made the outstanding flight of 8,500 miles from West Germany to California only to crash on his final landing in California where he was very nearly killed.

The model presented here is exact scale except for an enlarged stab and rudder, slightly increased dihedral, and balanced rudder design. I used the balanced rudder to reduce the load on the Baby Adams actuator. I also used the Ace Baby RO pulse radio system which weighs about 3 oz. The complete plane with Cox Tee Dee .020 weighs 10 oz. With 182 square inch wing area, this weight gives a fairly low wing loading for good soaring. Some readers may like to use a lightweight galloping ghost system such as the Ace Mini-GG actuator to have rudder and elevator control.

Constrcution. The wing is built in three sections: Right, left and center. Cover the bottom of the center section with 1/32 sheet balsa at this time. Choose hard straight balsa for the wing spars and leading and trailing edges, so that you don't build in any warp problems. I like to install the antenna in the wing for a neater appearing finished model. When building the left wing, lay thin hookup wire in the notch for the top spar before installing the spar, itself, leaving about 6 inches hanging out the wing root to run through the center section and up to the radio..."

Hi Mary/Steve - Here is Bob Peck's Fournier RF4D from RCM magazine issue 04-72.

Direct submission to Outerzone.

Supplementary file notes

Article pages, text and pics.


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

Fournier RF4D (oz7174) by Bob Peck 1972 - model pic

  • (oz7174)
    Fournier RF4D
    by Bob Peck
    from RCMplans (ref:487)
    April 1972 
    44in span
    Scale IC Glider R/C Civil
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 28/10/2015
    Filesize: 666KB
    Format: • PDFbitmap
    Credit*: theshadow
    Downloads: 3337

  • Fournier_RF-4 | help
    see Wikipedia | search Outerzone
    Test link:
    search RCLibrary 3views (opens in new window)

    ScaleType: This (oz7174) 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
    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

User comments

No comments yet for this plan. Got something to say about this one?
Add a comment



Download File(s):
  • Fournier RF4D (oz7174)
  • Plan File Filesize: 666KB Filename: Fournier_RF4D-RCM-04-72_487_oz7174.pdf
  • Supplement Filesize: 1031KB Filename: Fournier_RF4D-RCM-04-72_487_oz7174_article.pdf
  • help with downloads


* 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, 2011-2024.

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.