Comments on: DIY coil winding machine

By: ardinordin

ardinordin — Wed, 26 Aug 2009 01:34:33 +0000

i have one genset capacitor induce type. my question is what happen if i change capacitor value from 20uf 300vac to 40uf 300vac.

By: Geedavey

Geedavey — Tue, 20 Nov 2007 21:26:21 +0000

Maybe not quite as hack-y, but a bicycle odometer would work quite well. Cheap ones are triggered by a mechanical cam-and-gear, higher-end ones by a magnetic trigger that you could glue (or merely magnetically attach!) to the crank gear. I also like Dr. Electro’s spinning reel winder; or a sewing machine bobbin winder would do a great job on smaller coils.

By: Dr Electro

Dr Electro — Fri, 19 Oct 2007 15:33:17 +0000

Coil winding video

http://www.metacafe.com/watch/490188/easy_coil_winding_by_dr_electro/

By: Dr Electro

Dr Electro — Fri, 19 Oct 2007 13:59:42 +0000

Coil winding by Dr Electro
http://www.metacafe.com/watch/490188/easy_coil_winding_by_dr_electro/

By: John Bump

John Bump — Sun, 14 Oct 2007 23:16:00 +0000

Having built a lot of coil winders, I find it much easier to do this using power: drill a hole about 5″ in from the end of a mandrel, put a couple of 3/8″ sealed bearings (like from newer bicycle hubs: they can be thrashed) on the mandrel, clamp the bearings in the vice, and put a power drill on the one end of the rod. Stick a piece of wire through the hole and spin it up. You can use a pedometer or a rotation-counter. It’s way faster and easier on your wrists than using a hand drill, and after the first million windings, your wrists will thank you. Wear a glove on the hand guiding the wire onto the winding: if you get any skin caught between the wire going onto the winding and the winding itself it’ll just clip that chunk of skin right off and that leaves a big nasty hole.

By: Jose Pino

Jose Pino — Sun, 14 Oct 2007 18:09:55 +0000

Cool machine! When I created my homemade speaker, I had some trouble to make the coil. I hope I can build a coil winding machine and improve my speaker.

http://www.josepino.com/other_projects/index?homemade-hifi-speaker.jpc

By: Adam Ziegler

Adam Ziegler — Sun, 14 Oct 2007 16:56:57 +0000

If anyone is interested, I did a software based (free) coil wind counter a few years ago. Look at the "Wind Counter": http://pickups.myonlinesite.com/programs.php

Input is accepted through a 9 pin serial port, and most people utilize a a reed switch to trigger it.

By: Alex B

Alex B — Sun, 14 Oct 2007 14:01:25 +0000

I’ve also seen a cheap pocket calculator used to count events, type “+1″ then rig your switch to the “=” key. Might not work on all models, though.

By: hitch

hitch — Sun, 14 Oct 2007 13:16:55 +0000

looks pretty ingenious, i like the use of the pedometer. dosent seem to mention anything about wire tensioning, but i guess thats done by hand as its wound.
built a coil winding device for guitar pickups sometime ago, and trying to maintain constant tension on 42swg wire was a horrendous task.
*shudders at memorys of steel tubes and springy things with pulleys on*

By: joelanders

joelanders — Sun, 14 Oct 2007 10:23:24 +0000

pedometers are great.
the local dollar tree has them for.... a dollar!
they've got a simple mechanical "swinging weighted arm" switch, so it's really easy to interface with it.

i used one for a frame counter on a super 8 camera. another mod i saw for a frame counter used a calculator: set it up so that each time the "=" button is pressed, repeat the last operation. so "plus one" was the obvious counting operation.

but seriously, if you can find them for a buck, stock up because the need to count things (quickly, or lots of something, especially) comes up a lot.

and you get to play a game trying to walk less every day. heh. am i doing it right?

By: tony

tony — Sun, 14 Oct 2007 08:47:05 +0000

great device, probably will make one myself if i can get around to it. also, i think you spelt Pedometer wrong the second time.