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Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
I have a number of 1920s and 1930s detailed plans for making coil winding machines out of very simple parts such as cotton reels. Best of these are the designs for wave winding machines, a technique usually thought beyond the skill of the home workshop.
I'll be happy to copy them to any regular 4HV member in good standing, and you in turn might think of making a small contribution to 4HV if you are able.
Registered Member #1408
Joined: Fri Mar 21 2008, 03:49PM
Location: Oracle, AZ
Posts: 679
One of the cheaper and better suggestions was given to me by members here some time back - that of a BBQ meat turning motor. It's inexpensive has a very appropriate RPS and can be controlled within boundaries to keep costs at a minimum.
I had attempted to use a lathe (wood lathe) and build one that was hand-driven....too much work & cost for an item I would use less frequently than many other things. The BBQ motor is slow but varies enough, built tough and may be obtained free on occasion. Often mounting hardware may be used from it's original application.
I'll find the mock-up I did ad see if it's appropriate for this thread. It wasn't pretty but it was very clear.
Registered Member #72
Joined: Thu Feb 09 2006, 08:29AM
Location: UK St. Albans
Posts: 1659
Lego Technic!
I built a lathe to wind my 110mm x 500mm secondary. You can thread a Lego hole M6, which is how it interfaces easily to a studding lead-screw.
It would be fun to build a wave winder with it. I suspect that wave would need to be nearer to traignular than sine, but I reckon that a suitable arrangement of levers worthy of Victorian steam engines could distort the basic sine produced by a crank into something a bit more triangular.
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
Hi Slackmnan, what I like so much about these pre-war designs is their combination of complexity and simplicity - for example, I have a book on DIY radio from 1922 which assumes that nothing at all is available off the shelf. Even the variable capacitor must be made from household parts. Unsurprisingly, the first half of the book is about woodwork and metalwork.
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
Oh, I have a dozen at least, so if there's a topic you'd like to know about from a '20's or 30's perspective, please let me know, and I'll be more than happy to scan them for you as .jpg
Just make sure you take the trouble to send them to others, and the new guy in particular, and I shall have been more than repaid.
Registered Member #1548
Joined: Mon Jun 16 2008, 09:22PM
Location: Ohio
Posts: 61
I have a book on DIY radio from 1922 which assumes that nothing at all is available off the shelf. Even the variable capacitor must be made from household parts. Unsurprisingly, the first half of the book is about woodwork and metalwork.
Whichever book that is; It sounds quite lovely. I love old radios and such, and I think it would be great to build something like that. I would really appreciate it if you would do that.
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Vintage DIY/homebrew Coil winding machines
