[R-390] kilocycle/megacycle movement

[Scott, Barry (Clyde B)]

I would never have to _force_ myself to look at the gears.

Barry - N4BUQ

<snip>
> It's difficult to spot.  You have to force yourself to look at each
> shaft/gear set and watch to see if the gear stalls as the 
> shaft continues to
> rotate or vica versa -- through the full range of the band(s).
> 
> Another more basic possibility is that the mechanical synch 
> is slightly out
> somewhere.  And, yeah, I suppose there are other possibilities, like a
> hanging slugrack -- on the downswing.  That will also be very 
> consistent.
> Looks like the little roller bearing is following the cam (they're cam
> followers, aren't they?), but then the slug hangs and the 
> bearing is really
> suspended a fraction of an inch over the cam, not resting on 
> it.  Might be
> flush in front and high in the back.  As a slug rack moves down to its
> lowest position, gently tap on front and back to make sure 
> it's really all
> the way down against the cam.
> 
> Gotta look at the thing ... in motion.
> 
> Barry