Druine Turbulent (oz8335)


Druine Turbulent (oz8335) by Ron Moulton 1955 - plan thumbnail

About this Plan

Druine Turbulent. Fre flight power scale model of the French homebuilt.

Quote: "A visit to 'Gay Paree'" had been arranged, and we set forth to visit Roger Druine, aircraft designer at the age of 15, builder of many ultra-light aircraft and a young man with an eye to design that we had long admired.

Roger was at the design board, halfway up his front room wall when we called - we can't tell you what he was drawing, but you may take it from us it was a corker for scale. Would we - perhaps - like to see a Turbulent being made? The offer was accepted as a gift from heaven, and we weaved through the traffic in haste to a downtown furniture yard. Upstairs we found a tall, very experienced man with a Golden 'C' badge on his lapel looking over the work of two boys who were making an aeroplane. Yes - a real aeroplane, and it looked no more than a grown-up model. The ribs were as though from 1/4 in sq. The fuselage could be tucked under a large arm, the tailplane and elevator were just 12 inches chord each. Look at your rule and you'll see that's small.

We fell in love with the Turbulent there and then, and our model, the one you see here, is to exact scale of the version being built by those lads in Paris. It is the 200th home-built from sets of Roger's Turbulent plans, and it differs from others with a slightly higher rear fuselage and altered cockpit. Our model should have an intake scoop on the cowl as well; but as we fitted a Merlin instead of a Volkswagen engine we dispensed with it.

First we kept to scale and used a symmetrical section tailplane, but after the first three loops we thought better of it, and built another with a lifting section. What a difference! Now the model climbed in a pretty left spiral, the letterbox wing slots clearly helping it hold the perfectly banked turn all the way up, and in the wide, smooth glide turn there wasn't a trace of a stall. Just like the real thing - pretty to look at, and a delight to fly

A 7x4 prop proved best for the Merlin, and for .5 c.c., a 6x4 should be ideal. Fix the tail when you have found the best trim - and watch the fuel, a tankful can take her awfully high!"

Update 29/10/2020: Replaced the PDF plan file with a clearer 2-colour version, thanks to Miguel.

Supplementary file notes

Previous scan version.


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

Druine Turbulent (oz8335) by Ron Moulton 1955 - model pic


  • Druine_Turbulent | help
    see Wikipedia | search Outerzone

    ScaleType: This (oz8335) 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 https://en.wikipedia.org/wiki/Druine_Turbulent
    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.

Druine Turbulent (oz8335) by Ron Moulton 1955 - pic 003.jpg

Do you have a photo you'd like to submit for this page? Then email admin@outerzone.co.uk

User comments

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



Download File(s):
  • Druine Turbulent (oz8335)
  • Plan File Filesize: 471KB Filename: Druine_Turbulent_32in_oz8335_.pdf
  • Supplement Filesize: 351KB Filename: Druine_Turbulent_32in_oz8335_article.pdf
  • Supplement Filesize: 276KB Filename: Druine_Turbulent_32in_oz8335_previous.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, 2011-2022.

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.