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Looking for builds that show Carbon rods driving multip... - 5/23/2013 8:26 PM   
picard1


 

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Over the years I have seen photos of guys running carbon fiber rods through the wings to run multiple flaps with a single servo. If I remember correctly they epoxied on multiple control horns through out the length to control the individual flaps. I am hoping some of you guys may have a link to some of these builds, or have done it yourself and post some photos. Just trying to not reinvent the wheel!!!.



Thanks
Mike

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RE: Looking for builds that show Carbon rods driving mu... - 5/24/2013 4:06 AM   
wphilb


 

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Mike,

One thought, I tried to use carbon rods as torque tubes to run my N28 ailerons and found that carbon tubes allowed too much twist. I had to go to aluminum arrow shafts which worked great. You could then Hysol G10 control horns on the ail arrows haft and it should work fine.

Whit


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RE: Looking for builds that show Carbon rods driving mu... - 5/24/2013 6:07 AM   
picard1


 

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Whit,
Great idea thanks! Should the arrow shaft be supported with bushings at both ends?

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RE: Looking for builds that show Carbon rods driving mu... - 5/24/2013 6:27 AM   
fw190



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Why? servos today are so inexpensive and its so much easier to electronically adjust them with your radio or a device like a servo match box and not deal with any of the mechanical adjustments.

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RE: Looking for builds that show Carbon rods driving mu... - 5/24/2013 12:45 PM   
wphilb


 

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 I did use bushings at both ends, you can see on my BUSA N28 thread on RCSB. A friend machined bushings for me and neat joiners that allowed the wings to decouple easily.

Using multiple servos can work also, the trade offs are weight and cost vs easier setup. SmartFly makes units like matchboxes called Equalizers for this exact purpose. 

Whit


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RE: Looking for builds that show Carbon rods driving mu... - 5/24/2013 1:17 PM   
mick15



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Mike, what you are advocating is perfectly doable as with my Sea Fury flaps, it has six and are all driven from servos mounted in the center section.

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