SE5a (oz2995)

 

SE5a (oz2995) by Ray Booth from Aeromodeller 1951 - plan thumbnail

About this Plan

S.E.5a. Free flight scale WWII biplane fighter for Kalper diesel power. From October 1951 Aeromodeller.

Quote: "THE SE5a needs no introduction to most aero-modellers. Probably more scale models, both flying and solid, have been made of this machine than any other type, and our American friends in particular have long favoured the SE5a for scale modelling.

The model, which is one of the smallest free flight power models in the country, was constructed to prove that a scale free flight power model need not necessarily be complicated in design or require a large number of building hours to complete.

Following the success of the writer's Avro 504K (oz1554) featured in the December 1949 issue of Aeromodeller, a number of local modellers expressed a growing interest in flying scale machines, but a large number of modellers were inclined to reject them on the grounds that they took too long to construct. With the SE5a model therefore, the primary design considerations have been simplicity combined with robustness. The original survived some terrific 'prangs' in atrocious weather.

Construction is quite straightforward and should not present any difficulties, even to the newest recruit to this hobby of ours. The completed machine, which weighs 4-1/4 to 4-1/2 ounces, should balance about 3/16 in aft of the lower wing leading edge. With the CG at this position, the aircraft is, in actual fact, somewhat nose heavy, but this tendency is countered by rigging the tailplane at -3° incidence. When fitting the motor, ensure that the thrust line is offset 2-1/2° to 3-1/2° to the right.

Since the wing loading is rather high (about 7 ounces to the square foot) the model glides rather fast. Consequently, it should be glide tested over long grass..."

Quote: "The SE 5A was a free plan in the magazine and designed by Ray Booth. It was designed around the Kalper and had a 'massive' span of 16.3/4 in. The original plane had ideal proportions for a flying scale model and I have no doubt this little beauty would give many hours of pleasure."

This is a modern redrawn plan in PDFvector format.

Supplementary file notes

Scan of the article, text and pics.

CAD file

This plan is available for download in CAD format.

Corrections?

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

SE5a (oz2995) by Ray Booth from Aeromodeller 1951 - model pic

Datafile:

ScaleType:
  • Royal_Aircraft_Factory_S.E.5 | help
    see Wikipedia | search Outerzone


    ScaleType: This (oz2995) 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.


    Notes:
    ScaleType is formed from the last part of the Wikipedia page address, which here is https://en.wikipedia.org/wiki/Royal_Aircraft_Factory_S.E.5
    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.

SE5a (oz2995) by Ray Booth from Aeromodeller 1951 - pic article_pic_1.jpg
article_pic_1.jpg
SE5a (oz2995) by Ray Booth from Aeromodeller 1951 - pic article_pic_2.jpg
article_pic_2.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):
  • SE5a (oz2995)
  • Plan File Filesize: 91KB Filename: SE5A_PrintBW_oz2995.pdf
  • Supplement Filesize: 1270KB Filename: SE5A_PrintBW_oz2995_SE5A-Document.pdf
  • CAD Zip Filesize: 123KB Filename: SE5A_PrintBW_oz2995_cad.zip
  • help with downloads
 

Notes

* 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.

Scaling

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, 2011-2019.

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.