I was playing with a gear test I was working on, and it was working out so well, I converted it into a toy for my kids.
Enter the “Toy Helicopter”!
The blades are connected with gears. As you turn one, the other turns also.
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How charming, what lucky kids you have!
It would be extra imagination fun to integrate a rubber band wind up system so the rotors could run themselves for a few seconds. Please post should you decide to sell this design somewhere.
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Fun! 
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Cool dad!
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I had considered trying to do a wind-up car, but maybe a wind-up helicopter would be cool too. I would want to change the gear ratio to make better use of the stored energy…
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I like your gears. Very creative . 
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That is pretty cool! Great job!
Get to tha choppa!
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Neat gears indeed!
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Nice! I have wanted to do a windmill. That looks fairly straight forward! Great stuff!
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Yes, I had considered trying to do a windmill after seeing @designvh619’s design. I thought to myself, “Maybe I could make the turbine spin and turn a shaft, just like a real one?”
(Link to @designvh619’s windmill post: What’s a barn without a silo? )
There is so much creativity on these forums. I get so many new ideas, I really should write them down…
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That is absolutely so precious.
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If you bookmark the posts you get ideas from, you’ll have a persistent library of ideas waiting…
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Yeah, I could bookmark them, but the idea I get from them is not generally exactly the same. So, I might not have the same idea just by looking at it again…
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My next machine test is working out also… but it’s anyone’s guess what I might turn this in to…
My original idea was to use a chain drive to move marbles or discs in a new contraption. But, it would probably be pretty big to use a chain this size.
I am happy that the tests are working, but I might need to see if I can reduce to the size. (Even though that would also reduce the strength of it…)
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Would make a wicked chain saw for a Halloween costume. Or add ducks for a shooting gallery.
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Hello, I downloaded the helicopter file and wanted to give it as a kit to my 13 year old nephew. Are there any assembly instructions I can give him with it?
Thank you.
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For any of the catalog files - when the file is open click on the three dots menu at the top, assembly instructions should be listed there 
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As @ekla noted, click the three dots. Then select Design Details. Then select instructions.
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Thank you everyone!
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Has anyone tried using acrylic for the helicopter?
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