Villiers Coil Contact Pad

[phil]

Get an average ohms value for the secondary, find the wire size, look up how many ohms that size is/1000', that will give you how many feet need to be wound on to get the normal average ohms for the secondary.

If you are contemplating winding it yourself, I'm sure you know the problems involved in handling very fine copper wire, and probably the above information as well. If not you should inform yourself.

( As an experiment get a coil of # 48 magnet wire make a simple rack and axle and try to get it to feed evenly as you wrap the wire around a spool as though it were the coil you plan to wind. This will give you an idea of how much of a non starter this idea is unless you are planning to get the proper equipment for winding magneto coils. Building a regular transformer is a piece of cake compared to this.)

I can guarantee it will cost you many times the price of a new coil from Seagull or Villiers, by the time you get or make the equipment you need and become competent enough to produce a worthwhile product.

People that are setup to do it generally charge anywhere from 2x to 5x the price of an equivalent manufactured coil and they are not getting rich at it. They generally only do coils that are totally unavailable any other way.

[1650bullet]

I would recommend to everyone (Expect the poeple who have the gear to rewind there own coils) to purchase a coil if they need one. Its not worth paying 3 to 4 times more money to get one reconditioned. Just go and purchase one from Villiers themselfs or Flea-bay for a non genuine. Now that ive got this coil working again, its going to be used as a spare. Its so easy to remove the flywheel and swap the base plate out on the water than change the coil alone.

[Niander101]

Even easier to have a backup Gull on the transom

[Hugz]

I can see myself rewiring coils in my dotage in a nursing home. Would keep me in double malt and viagra.

[Stelios_Rjk]

Hi Kean, sorry for not posting pictures but I was in a hurry to see if it will run and only until now I saw the request

Secondary winding has 10600 turns of 0.07mm wire thickness. Between every layer of winding wire there is a layer of insulation... Looks like a suicide mission trying to wind it yourself. I get a replacement coil for 22.5pounds incl postage. It's not the correct but should do. I will post when received and tested.

[Charles uk]

Stelious where did you get that information about the insulation?

I don't think that's correct.

[Stelios_Rjk]

I have cut and open one coil. I think between every layer of winding wire there was a a layer of fabric.

[Charles uk]

Check again carefully the location & number of cloth layers.

The wire is 45 SWG, 0.071mm not including the insulation.

And the rules seem to be NO joins in the windings, so if you break the wire you have to start again.

[david doyle]

you will break a wire for certain! I use similiar wire for ribs on fine fishing flies that require 3-6 wraps around something soft like rabbit under fur. With the benefit of 20 years experience a pretty steady hand, excellent vice and no pressure I break off the wire maybe once every dozen flies. i.e every 50 or 60 wraps Good luck getting to a thousand on a coil.

[Stelios_Rjk]

Is there a misunderstanding that I will attempt to wind a coil? There is no way! I prefer to receive it ready to fit via the postman!

About the insulating layer between the winding wire. Follows a picture, the screw driver tries to show the insulation. It seems that it is not cloth but there is something over there. It must be a kind of paper soaked in varnish. And it is absolutely logical to be there, between the layer of the winding wires. Every layer, around 27 in total, increases the voltage around 0.75KV to build up finally a voltage of 20KV (20000volts) in order for the spark plug to spark. So if there wasn't good insulation between the layers there will be discharge between them. This is the reason why a spool of winding wire simply does not do for the job. It is essential for the coil to work those insulating layers.

[david doyle]

Not you stelios, It was Denchen that was contemplating it.