stunthanger.com
General control line discussion => Open Forum => Topic started by: Dennis Toth on November 24, 2017, 12:23:40 PM
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Was doing a search for plans for the Sterling Yak 9 profile (which I didn't find) and came across this site that has hundreds of PDF plans. Great place to brows for old ships https://www.rcgroups.com/forums/showthread.php?1288656-Control-Line-Plans
Enjoy, DennisT
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Lots of plans from various rcgroups threads can also be found on a number of free plans sites. My favorite is https://outerzone.co.uk/ .
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Was doing a search for plans for the Sterling Yak 9 profile (which I didn't find) and came across this site that has hundreds of PDF plans. Great place to brows for old ships https://www.rcgroups.com/forums/showthread.php?1288656-Control-Line-Plans
Enjoy, DennisT
Please post when you find the Sterling Yak 9 plan.
Thanks
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George, I don't think you'll find a Sterling Yak-9 plan. The kit came with a small-scale 2-view on the instruction sheet. I took my plans to a copier several years ago and just had it copied at a magnification that gave it the correct span. If you want to fly OTS with something built from such plans, that should be legal, since it was "published." The only scans I have now were scanned at a low resolution to fit the other Forum, but I'll the jpeg version below, if it would be helpful. I can find my kit plans and scan at higher file size, if that would be useful. I also scanned some kit parts and the rib openings left from the die-cut wood, but these would not necessarily come out at the right size. However, if you look up the span (it's not on the box, but was in ads of the time - 38" or 40", I think), you can scale everything. The problem of magnification is that it also magnifies line widths and irregularities. BUT, you can build reasonably from such magnified images.
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It was fun to look through the plans on that site and to see a couple Roy Clough, Jr. designs there. They weren't his most interesting, but they were, as always, imaginative.
SK
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Re: Sterling Yak 9 plans. I believe that Pat Johnston has drawn up a set of plans (probably using parts from a kit). He has it listed as plan #144. patsplans@yahoo.com
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Brodak has the plan available.
http://brodak.com/control-line-parts/brodak-kit-plans/yak-9-plan.html
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Also Barry Baxter
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I'd forgotten that Brodak was producing the Yak, and their custom is to provide
plans. I don't know for sure about authenticity, since there has been some discussion of wing sections in other models, but my guess is that these should make for a well-flying model. 'looks as though your problem is solved!
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George, I don't think you'll find a Sterling Yak-9 plan. The kit came with a small-scale 2-view on the instruction sheet. I took my plans to a copier several years ago and just had it copied at a magnification that gave it the correct span. If you want to fly OTS with something built from such plans, that should be legal, since it was "published." The only scans I have now were scanned at a low resolution to fit the other Forum, but I'll the jpeg version below, if it would be helpful. I can find my kit plans and scan at higher file size, if that would be useful. I also scanned some kit parts and the rib openings left from the die-cut wood, but these would not necessarily come out at the right size. However, if you look up the span (it's not on the box, but was in ads of the time - 38" or 40", I think), you can scale everything. The problem of magnification is that it also magnifies line widths and irregularities. BUT, you can build reasonably from such magnified images.
Hey Serge, a little late in my response, but this will do fine. I have no problem with the line thickness. I just needed the outline and location of elevator relative to the wing, etc- Thanks George
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Free Login required for these two.
Hip pocket aeronautics
http://www.hippocketaeronautics.com
Aerofred
https://aerofred.com
There is a cl yak 9 on aerofred, but it is not Sterling's.
Phil