Bolkow Junior (oz1708)


Bolkow Junior (oz1708) by Ray Malmstrom from Model Aircraft 1962 - plan thumbnail

About this Plan

Bolkow Jr. Scale rubber model. From Model Aircraft July 1962.

Quote: "Ray Malmstrom's Bolkow Junior.

Here's an easily built, tough little rubber powered scale job that really flies. The helpful sketches on this page clearly show the simplicity of the construction - the fullsize blueprints fold out overleaf..."

Supplementary file notes

Planfile includes article.


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

Bolkow Junior (oz1708) by Ray Malmstrom from Model Aircraft 1962 - model pic


  • Malm?_MFI-9 | help
    see Wikipedia | search Outerzone

    ScaleType: This (oz1708) 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

I have a copy of this plan direct from the Aeromodeller of 1962. It is a charming plan, clearly designed to encourage young modelers and those gaining experience with free-flight models (an irony, but a result of the cheap r/c world we live in). An interesting aspect is that the plan was printed as an actual blue-print, in blue with white marking. I have built one example (sadly eaten by a tree), and can attest that with an Airsail 6” propeller and a single loop of rubber that its flight performance is superb, and that trimming is almost unnecessary, as the slipstream torque is more than enough to set it in a gentle climbing spiral, and the windmilling prop is then again sufficient to set the model into a gentle opposite-handed spiraling path back to the ground. Endurance is a good 30 seconds, without trying too hard. Although I cannot prove it, I suspect another loop of rubber would improve performance dramatically. The fuselage is noteworthy for only twisting very slightly when under rubber load, which is very important for stability and the new modeler. With today’s technology, trim tabs of transparent plastic are a great idea for easy control. I also found that ballasting was totally unnecessary. I am considering building another one, but this time r/c’ing it with the guts of an el-cheapo Nine Eagles Su-26MX or P-51 after I have flown one of those literally into the ground ! With Kind regards,
MartinLaGrange - 11/05/2013
Add a comment



Download File(s):


* 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, 2011-2020.

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.