Prestwick Pioneer (oz2525)
About this Plan
Prestwick Pioneer. April 1951 Aeromodeller. Frog 150 shown. This is a modern redrawn plan in PDFvector format.
Quote: "THE 'Pioneer' is a natural flying scale model, of high wing layout, yet with enough unusual items to he distinctive. So far only a prototype exists, and that has been the subject of numerous development changes which makes it difficult to be sure that the final version will be the same as the one from which this model was built.
In fact, the cabin interior is 'freelance', as no details could be obtained apart from the number of seats. There have been several Service, civil and ambulance layouts tried, front two or three seats plus radio, to only one scat plus ballast, so that some doubt is excusable. The prototype has been flown with various dihedral angles and at least three fin shapes, so that if you are able to check with a later edition, you may find yet another change. One item which is noticed in the flight pictures of the Pioneer is that the undercarriage seems longer than that on the model, but this is due to the very long travel of the oleos, the wheel being more than a foot lower in flight than on the tarmac, when the model length is correct. It is reported that when the engine is run up, the Pioneer rises quite a bit on the oleos, which must be quite a sight.
Producing a flying scale model is a matter of having the right size and weight for the engine to be fitted, and the size of a 1/12th scale model being 52 inches span, it was decided that a Kestrel 1.9 cc should be used, which gives around 22 ounces static thrust. This would require the weight of the model to be 32 ounces or so, and heavy construction was used to bring the weight up to that figure, which was exactly reached. This heavy weight gives a fairly fast model and a strong nose on the fuselage while safety wing and tail fixings were decided on, to absorb the bumps. This worked out very well, as the first few flights had very bad luck, such as hitting a tree and falling into a rocky river, but no damage resulted.
It would be easy to reduce weight to around 24 ounces, using balsa formers with thin ply facings for the first two, and a size smaller in wing spars, and sanding the fuselage covering down a bit more, covering with thin tissue in place of bamboo paper, and using light wheels. This would ailow a good 1 cc engine to fly the model, especially if the cabin interior is left rindetailed. Any modern 1.49 would take the original weight with ease..."
Quote: "So next up then is the Prestwick Pioneer. A 1/12th scale free flight model designed by Robert Burns. A good sized model (52 inch wingspan) and using, in its original configuration, a 1.5 to 2 cc motor. It screams out for RC and as for electric, I'll let others decide, being a motor head man myself. Once again if using my drawings please take care, measure twice, mark, measure again and cut. They are only tracings from the original blown up magazine scans."
Supplementary file notes
Article page, text and pics.
This plan is available for download in CAD format.
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
by Robert Burns
Scale IC F/F Cabin Civil
all formers complete :)
got article :)
Found online 04/03/2012 at:
Format: • PDFvector • CADfile
Scottish_Aviation_Pioneer | help
see Wikipedia | search Outerzone
ScaleType: This (oz2525) 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/Scottish_Aviation_Pioneer
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 firstname.lastname@example.org
User commentsNo comments yet for this plan. Got something to say about this one?
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.
© Outerzone, 2011-2021.
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.