[Elecraft] Toroid Winding Question

[Brett gazdzinski]

 In my case, I wound them tight, and reduced the amount of wire
used so I did not have so much extra after the torod was done.
Some cores scrape the wire, I tried to use a bit more caution
but still had some scrapes, it does not matter, they don't short out.

I wound all my toroids with one extra turn, as the first pass
through the core counts as a turn (I did not know that), the rig
actually seemed to work better before I unwound one turn off
every toroid and re-did the alignment/calibration.

I would doubt the tightness makes much difference other than
looks, as one turn more or less did not seem to make any big difference
in my K2.

Brett
N2DTS



> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Clark Macaulay
> Sent: Thursday, July 05, 2007 8:27 AM
> To: ElecraftList
> Subject: [Elecraft] Toroid Winding Question
> 
> Perhaps this question has been raised before, but I haven't 
> been able to find it in the archives nor in the manual.  
>    
>   I've built a K1 (words fine) and am now building a K2. 
> Yesterday, while finishing one of the first toroids in kit, I 
> noticed one of the turns had crossed over the previous one, 
> so I began to unwind it. Then I noticed that the wire had the 
> enamel nicked in several places and chose to replace it. 
>    
>   In thiking over what might have happened, wondered if I may 
> have been pulling the winding too tight. Currently, I'm 
> "pushing" the wire through the center of the core rather than 
> "pulling" it so as to keep it away from the core to minimize 
> scratching it. Obviously, though, it's not possible to know 
> if the winding has been scratching in making the bend around inside.
>    
>   So, my question is, to quote Shakespear, is my concern 
> "much ado about nothing"? Am I winding them too tight (I 
> noticed there are LONG leads after winding that could 
> indicate the turns are too tight)?  
>    
>   73 de Clark KE4RQ 
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