Michael Cheponis <Michael@Cheponis.Com> wrote:
> I have a 566, and the knobs are perfectly balanced.
It's great to know that knobs on 566 do not drift by themselves.
I managed today to balance both of my 565 VFO knobs.
It was easier than expected, took me 15 minutes per knob.
Using an 8 mm slot drill, I cut out a ~2 mm deep hole,
on the bottom of the cast balancing hole,
just opposite of the fastening screw.
Quantity of material removed was very similar on both knobs:
approximately 100 mm^3, which is ~0.27 g of aluminium.
For the record:
the knob itself is ~165 g
skirt (made of metalized plastics) is ~8 g
spring is ~1 g
rubber is ~10 g
I completely ignored the skirt and the rubber
as being much lighter than the main knob part.
Now I can use a much lighter drag, similar to FT1000,
and VFO knobs are much more pleasant to use.
73,
Sinisa YT1NT, VE3EA
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