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Hyperbola Whirlygig

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Project by haskins posted 01-23-2016 09:25 PM 1831 views 7 times favorited 4 comments Add to Favorites Watch

https://youtu.be/L8FIMao_z9s

credit to David Winigrad for the concept (see his link above for example sound and motion)
The beads fall on one side and ascend on the other (each bead making a noise against the plates)

ran across this on you tube and had to make one. The sound and motion from it are cool. The bead noise is proportional to wind speed.

Construction: the blades are old blind slats the rest of the wood was scrap. The metal rod/shaft is a knitting needle from walmart. The string is spiderwire (fishing line). A little tricky getting everything glued up right. We had to make a tablesaw jig to cut the angles for the blades in the center hub. Its been spinning in the front yard for a few months now and seems to have survived some good storms. Used plastic tubes for spacers. Balanced fan blades by moving them around before glue was applied.

-- father son woodworks





4 comments so far

View kaerlighedsbamsen's profile

kaerlighedsbamsen

1177 posts in 1177 days


#1 posted 01-23-2016 11:08 PM

Interesting concept. Does it make a nice sound?

-- "Do or Do not. There is no try." - Yoda

View haskins's profile

haskins

126 posts in 702 days


#2 posted 01-23-2016 11:22 PM

It does. I didnt have a you tube account to post a video, but if you search you tube for David Winigrad, he has several versions posted. Most of his are turning fast, but the sound is entertaining when it speeds up and slows down too. It would probably sound interesting if you put a different type or thickness on each end where the weights strike.

-- father son woodworks

View kaerlighedsbamsen's profile

kaerlighedsbamsen

1177 posts in 1177 days


#3 posted 01-24-2016 09:59 AM

Had a look at a few of the videos. Some fine ideas there.
For a nicer sound, have you read about tonewood?

-- "Do or Do not. There is no try." - Yoda

View haskins's profile

haskins

126 posts in 702 days


#4 posted 01-24-2016 09:05 PM

I agree David has some cool design ideas and his whirlygigs are very nicely made.

We thought about paduak for the sound, but was not sure about how it would hold up outside. Thanks for the link on the tonewood, one of the wood drums (like below) is on our to build list. https://img0.etsystatic.com/101/0/5703604/il_570xN.841602168_an53.jpg

-- father son woodworks

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