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Boomerang Ranger

Old 01-11-2024, 05:13 AM
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jvaliensi
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Default Boomerang Ranger

Hi,
I am building a Ranger. Does anyone have experience with the elevator and aileron throws? They seem excessive in the manual.
Is the recommended CG make it nose heavy?
Thanks
Old 01-11-2024, 08:26 AM
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Canadian Man
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Aileron throws 10-12mm is good. 25% expo.
Elevator 12-15mm. 25% expo.

Manual CG is nose heavy so if your starting there, have that CG Location achieved with removable weight in the nose and slowly move back.
Manual CG is Fine for flying and once you move the CG rearward take off runs will be shorter as well.
Old 01-11-2024, 02:17 PM
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Me and Trusty #35 appreciate the feed back!
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Old 01-12-2024, 06:18 AM
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Originally Posted by jvaliensi
Me and Trusty #35 appreciate the feed back!
HAHA! Thats great!

Old 01-14-2024, 05:49 PM
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I am building one also. Are the throws you listed for total travel on ailerons and elevator? And where is the measurement made? At the tip or at the widest point of the control
surface?
Thanks,
Frank

BTW- the YouTube videos are excellent and very well done.
Old 01-15-2024, 06:04 AM
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jvaliensi
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I don't like like how control throw is express as a linear measurement. You get the above question. I generally assume the throw is measured at the surface root.
A better way is to express the throw as an angle, because the width of the surface is not important.

I like to use 15-degree up/down for elevator and aileron as a starting point. This seems to work with all the models I have. But if the CG is too far forward, as most manufacturers recommend, 15-degree may be too little for the elevator. The numbers Jonathan expressed seem to be close to 15-degrees.
Old 01-15-2024, 06:47 AM
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Pretty much anyone can work a ruler. Sadly not everyone can work a protractor or has even heard of one
Old 01-15-2024, 07:24 AM
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Originally Posted by BarracudaHockey
Pretty much anyone can work a ruler. Sadly not everyone can work a protractor or has even heard of one
I figured as such. Willie Nelson cannot read music, but he sure can play it.
Old 01-15-2024, 11:25 AM
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Originally Posted by ballistic1
I am building one also. Are the throws you listed for total travel on ailerons and elevator? And where is the measurement made? At the tip or at the widest point of the control
surface?
Thanks,
Frank

BTW- the YouTube videos are excellent and very well done.

Thanks! Measurements from the Root of the surface (Closest to Fuselage). Travel listed is each direction.

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