C_Thru Oscillator

[Davyboy]

My oscillator. Based on a plan I saw on internet, Lucy. Original was horizontal. I modified to fit materials on hand: 'plastic' bar gleaned from a yard sale, cut and polished by me, and some aluminum for piston, and steel flywheel 2 3/8 dia. It uses air like it's free, but it runs well from about 60 rpm all the way to a blinding blur.

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[cfellows]

Nice job! What is the flywheel made of?

Chuck

 

[chuck foster]

now thats a cool looking engine 8) ..........you can see exactly how the engine works and what each piece does
do you have video of the engine running?

chuck

 

[tattoomike68]

I like it, I need to try to build one also.

 

[chuck foster]

i forgot to ask, how do you polish plastic? :?
what kind of materials do you use and is it hand rubbed or buffed with a machine? please go into great details as i for one have no clue how to do it and you certainly do. 8)

chuck

 

[Davyboy]

The flywheel is carbon steel, a scrap from the saw room at work. drilled the 6 holes on drill press with cross slide vise. I polished the plastic starting with 400, 600, then 1500 grit, wet sanded. then crocus cloth and finally white toothpaste. I put the paper on a (flat) Formica countertop, and worked it. Then toothpaste and a little water. The 1500 is not fine enough, and I haven't been able to find any more crocus cloth. precious little left in my stash. There is another topic posted about polishing plastic around here too.

 

[rake60]

That is a sweet looking little engine!

I like the way it can SHOW how an oscillator works.

Great Job!

Now you know I'm going to ask for a video.... :wink:

Rick

 

[wareagle]

Very impressive work! A lot of rubbing, but the result is spectacular! As the others have said, share a video with us!

 

[wareagle]

Davyboy, sorry to hear that you are out and can't get the good internet service! However, thank you for going to the pains of getting the pictures put up here!

A real quick story: I have an old friend that has retired and moved to Mexico. Here in the states, he couldn't get anything but dial up service, and tried everything he could to get a decent speed (before satellite internet was available). Down there, he has a broadband connection and costs less than his original dial up did here.