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Model Forum / Radio Controlled / Air Models / November 2006



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Spark ignition coil

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markzoom@digiverse.net - 03 Nov 2006 10:31 GMT
Anybody have hints or instructions on how to wind your own?

Read something about a 100-1 coil ratio but what thickness wire is the
minimum acceptable? I want them as light as possible.
Tim Wescott - 03 Nov 2006 16:29 GMT
>  Anybody have hints or instructions on how to wind your own?
>
> Read something about a 100-1 coil ratio but what thickness wire is the
> minimum acceptable? I want them as light as possible.

You can buy these -- I don't know _where_, but the latest Flying Models
has a review in one of the columns.

For winding your own, do some web searching, or check the "Strictly IC"
web site for a back issue with a pertinent article.

Signature

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Posting from Google?  See http://cfaj.freeshell.org/google/

"Applied Control Theory for Embedded Systems" came out in April.
See details at http://www.wescottdesign.com/actfes/actfes.html

markzoom@digiverse.net - 03 Nov 2006 20:18 GMT
> >  Anybody have hints or instructions on how to wind your own?
> >
[quoted text clipped - 3 lines]
> You can buy these -- I don't know _where_, but the latest Flying Models
> has a review in one of the columns.

I'm in GB and stuff is even more expensive than in the US. I'm not
going to fork out more than the strimmer engine cost me on just a coil
for making the electronic ignition.

> For winding your own, do some web searching, or check the "Strictly IC"
> web site for a back issue with a pertinent article.

Already did. I only found one site with instructions, but I think it's
for a processor controlled electronic ignition circuit which puts more
than 6V into the coil.
I need a coil that will work with 6V. I think motorbike coils are too
big?

> --
>
[quoted text clipped - 6 lines]
> "Applied Control Theory for Embedded Systems" came out in April.
> See details at http://www.wescottdesign.com/actfes/actfes.html
Robbie and Laura Reynolds - 03 Nov 2006 22:45 GMT
> > >  Anybody have hints or instructions on how to wind your own?
> > >
[quoted text clipped - 16 lines]
> I need a coil that will work with 6V. I think motorbike coils are too
> big?

Try going to one of those websites where they sell reprints of old books
from the first half of the 20th century.  There used to be books telling
you how to do or make just about anything.  
I can't be sure that you'll find what you're looking for, but I won't be
surprised if you do.
markzoom@digiverse.net - 04 Nov 2006 01:05 GMT
> > > >  Anybody have hints or instructions on how to wind your own?
> > > >
[quoted text clipped - 22 lines]
> I can't be sure that you'll find what you're looking for, but I won't be
> surprised if you do.

I think there is a book about coil winding, I'm just being
impatient.....
While pondering on this I came up with a couple of thoughts...:
See new thread "Thoughts on ignition timing".
 
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