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Old 11-02-2012, 1:27 PM   #1
Andrew32 Andrew32 is offline
 
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DIY Powerhead Oscillator

So, I have been thinking and have concluded a controlled power head on a controlled oscillator would be the ultimate in random flow generation so i went out in search of a oscillator. Found one but GEEZ! $270?! I refuse...if it was more like $100 i would have said screw it and just purchased it. Its technology in $20 walmart fans. I started figuring out the fastest, cheapest, coolest way to achieve the motion and i went from everything to electrical switch to multi cams to elf's inside but i settled on the tried and trued linkage arm.

and the journey begins.




started off playing with geometry trying to get the "perfect swing".



Eventually I decided I wanted multiple degrees of sweep so I went with 4.



Heres The bottom with the Degree sweep labeled.


Still tons to design to do and hoping to have this project completed by Christmas for less than $50 and have a HIGH quality professional look to it.
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File Type: jpg 20121031_152341.jpg (40.9 KB, 334 views)
File Type: jpg 20121031_152353.jpg (33.1 KB, 334 views)
File Type: jpg 20121102_140631.jpg (30.6 KB, 328 views)
File Type: jpg 20121102_141050.jpg (57.5 KB, 331 views)

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Old 11-02-2012, 6:39 PM   #2
NathanNano NathanNano is offline
 
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nice id love to see what you come up with great start!

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Old 11-30-2012, 4:12 PM   #3
2ruble 2ruble is offline
 
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Any update on this?

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Old 11-30-2012, 11:16 PM   #4
Andrew32 Andrew32 is offline
 
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unfortunately not . . . work has been killer. To the point where I come home, look at my projects lined up and shiver. I do have some designs down on napkins i need to transfer. Gonna do it tonight!


Coming soooooon.....

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Old 11-30-2012, 11:37 PM   #5
cdavidson cdavidson is offline
 
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Is that piece going to be 3d printed or milled and broached? I'm interested in seeing where this goes.

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Old 11-30-2012, 11:41 PM   #6
Andrew32 Andrew32 is offline
 
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ideally i will be printing the whole project . . . lazy reefer+project=lazy manufacturing

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Old 12-01-2012, 12:58 AM   #7
2ruble 2ruble is offline
 
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Lol... Very interesting design... I'm interested : )

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Old 12-01-2012, 7:25 AM   #8
DavidinGA DavidinGA is offline
 
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Yeah I have seen the sea swirl and thought wow talk about overpriced hardware! I hope you are successful; and want some business!

Sent by Razr Maxx

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Old 12-03-2012, 12:38 PM   #9
GiulianoM GiulianoM is offline
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Ooh, Solidworks... nice.

I have a RepRap Mendel 3d printer that I'm in the process of assembling - very cool stuff.

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Old 12-03-2012, 2:55 PM   #10
Andrew32 Andrew32 is offline
 
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did some modeling this weekend. Still tons to do in terms of tolerances and bushing fitment and just refinement, but this is the jest. Hope to have it fully modeled by the end of the week.





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Old 02-14-2013, 3:49 PM   #11
Andrew32 Andrew32 is offline
 
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after ignoring this project for 2 months I made some progress on it. Didn't like my design on the last one so I changed a good bit of it. Mainly changed how the bushings sit and how the whole thing assembles. Also got to add a cord grommet and switch hole. Hoping to get this in the printer within the week.






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File Type: png Capture1.PNG (157.1 KB, 94 views)
File Type: png Capture2.PNG (113.2 KB, 93 views)
File Type: png Capture3.PNG (229.8 KB, 94 views)

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Old 02-14-2013, 4:14 PM   #12
cdavidson cdavidson is offline
 
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Looks good. What machine are you printing on? What is the purpose of the slots in the top of the cover?

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Old 02-14-2013, 4:17 PM   #13
Andrew32 Andrew32 is offline
 
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Quote:
Originally Posted by cdavidson View Post
Looks good. What machine are you printing on? What is the purpose of the slots in the top of the cover?

stratus machine. The slots are so I can ziptie the powerhead power cord down.

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Old 02-14-2013, 4:43 PM   #14
jbadd99 jbadd99 is offline
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Looks... expensive

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Old 02-14-2013, 4:59 PM   #15
porpoiseaquatics porpoiseaquatics is offline
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So forgive my engineering ignorance BUT.......if this is for a powerhead and it sits on the rim of the tank, the powerhead attaches to the top.....how is water going to get to the impeller of the powerhead? I don't know of any powerhead that is self-priming.
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Old 02-14-2013, 8:45 PM   #16
Eric B Eric B is offline
 
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Nice seaswirl! I made one a few years back out of acrylic on a cnc machine and had it on Grouper Therapy's tank for a test. The motor was a little bit off and the control rod hit so it burnt the motor up after about 6 months of running great. Since then I found stronger motors and I am redesigning due to a different swiveling pipe inside the unit. Good luck and if you need any info on mistakes I made just let me know I have it in a box in the closet with spare parts until I have more time to work on it!!!

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Old 02-22-2013, 4:49 PM   #17
Andrew32 Andrew32 is offline
 
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jbadd - it is, i had options to make it cheaper...but for my situation...its just about free

porpoiseaquatics - There is actually a down tube that goes into the tank. The powerhead attaches to a bracket there... underwater

well...after another week of sitting on my desk...finally started the work again..time to sit on my butt and watch netflix again

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