Paper Record Player

Sat, 26 Jan 2019

Over time, clutter builds up in my workroom. Eventually, I can no longer get thhough the door and the time comes to thin things out a little.  Last week was such a time,  I had a bit of a clear out and took a load of stuff down to the local charity shop. There on the shelf, I spotted these 7″ singles. That set me thinking, and so it was that I returned from the charity shop with a bit more clutter for the office.

I’m finishing off a book project at the moment so this is something for the future but that doesn’t stop me thinking about how the project might work.

I reckon already have the two main parts to make a paper record player. The drive and the horn.

For the drive I can use a modified version of the Mesh Gear Essential Mechanism

The vertical output shaft needs to turn at 45rpm to play a single. If I set the gear ratio to an  8:3 reduction then turning the handle at 120rpm, ie twice a second, will turn the output shaft at the correct speed. A 24 tooth gear on the shaft and a 9 tooth pinion should do the job.

For the horn I can use the form from the Passive Speaker project here…

While I’m finishing the book project I’ll be mulling over how the various other parts fit together. Should be fun!

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Comments (2)

  • maxlrainer January 26, 2019 at 7:13 pm

    Hello, Rob,

    Looks (sounds) like an exciting project.
    I found a similar (simpler) project/paper craft at “edition 8×8”
    http://www.edition8x8.info/bastelbogen/bastelbogen.html (scroll down a bit)

    Maybe it is of some interest for you:

    Best wishes,
    maxlrainer

  • Smelter January 27, 2019 at 1:16 pm

    Excellent idea for a project. How about printing on the turntable top a radial “strobe” pattern, the sort that interacts with a mains light source of 50/60Hz. to show the correct speed. You should be able to find one on the internet. I think I might still have one, so if I find it I’ll scan it an send it over to you.

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