[Elecraft] I got big heavy knobs...

[Don Wilhelm]

David,

The bearings in the encoder should be able to handle the added weight of 
the knob.
However, there is one caviat - some users of that knob want to mount it 
with no drag on the knob so they can "spin" it.  That means that there 
is no contact with the felt washer, and the weight of the knob is like a 
heavy lever placed on the end of the encoder shaft which would have a 
tendency to bend the shaft.

If the knob is mounted so there is adequate contact with the felt 
washer, the knob will be supported and should not cause any problem.

Bottom line, position the knob so there is normal drag produced by the 
felt washer.

73,
Don W3FPR

On 5/16/2014 11:53 AM, David Cole wrote:
> Hi all,
>
> I have just purchased a set of those all metal knobs for my K3...  I did
> not really realize just how heavy they were...
>
> The thought then occurred to me that the encoder shafts for both the
> main and the sub tuning may not be able to take the additional weight...
> Is this a valid worry?  If you are using these knobs, how long have you
> had them on?
>
>