[Elecraft] K3 VFO B with K2 knob?

[Rick Dettinger]

I bored out my K2 knob to fit the 1/4" shaft on my K1.  I used a drill  
press and a 1/4" Dremel bit.  I don't remember which one, but it was  
not a twist drill bit.  The K2 knob is 6mm.  6mm is 0.236 in. so you  
need to remove .007 in. of brass from the wall.  Since the knob would  
be hard to clamp, I would not use a twist drill bit.  It would almost  
certainly  grab and you would have a "spinner".  Better to grind.  I  
drilled out a knob hole in a Junker straight key lever arm with a  
twist drill bit because I wanted 5mm threads and the bit grabbed the  
lever, which I had to retrieve from a new hole in the wallboard.
Good Luck and 73
Rick Dettinger   K7MW


On Jul 17, 2008, at 6:09 PM, DaveL G3TJP wrote:

>
> Some time ago, I replaced the K2's main tuning knob, complete with  
> finger
> dimple, with another more user-friendly knob from the (*Shhhh!) Yaesu
> stable,
>
> In a fit of admiration of my new K3, it occurred to me that the  
> original K2
> knob might very well make a handy substitute for the K3's VFO B knob,
> particularly if the K3's tilt bail was in use.
>
> I was disappointed to discover that the K2 knob's hole was a shade  
> too small
> to fit on the K3's VFO B shaft.  There seems to be only a few thou
> difference, which might be worth drilling out, but has anyone else  
> tried
> this and if so, with what result?
>
> 73 DaveL  G3TJP