[R-390] wow... the R-391A does exist - Video Update

[Paul H. Anderson]

They work fine when they're kept clean and lubed.

His sounds the same as mine - the loudest noise is the squealing when the 
clutches are slipping at the stops (which they're supposed to do - that's 
how the unit 'zeros' itself).

If you get the grinding, it is because the clutches are stuck, which 
forces the motor gear to jump teeth over the meshing gear on the auto tune 
shaft.

I freed the clutches on mine by soaking the positioning heads in kerosene 
for a few weeks.  I'm sure there are other ways as well.

Paul

On Tue, 11 Apr 2006, Barry Hauser wrote:

> Ray ..
>
> You've captured the essence of the thing.  Make sure you turn up the volume 
> on your PC's when you play it for full effect.
>
> Bear in mind - all that racket and grinding noise occurs when the autotune is 
> working right.  When it isn't -- stuck, damaged, or out of mechanical synch, 
> it crashes into the ends of the ten turn stops and keeps on trying like a 
> horizontal pile driver.  It's a good idea to be ready to cut the 28 vdc. 
> There is no automatic safety shutoff.  Also notice when you play the video -- 
> it does not seek the shortest path, so to speak -- it cycles through all or 
> most of the way in one direction, then reverses.
>
> A demo of the R-391A prototype or a regular R-391 ("It will work the same as 
> this, sir.") might have gone a long way toward kaboshing the R-391A proposed 
> contract.  ("We recommend a full alignment every two weeks, overhaul of the 
> RF deck every three months, and replacement of the PTO every six months.") 
> Not consistent with "cost-reduced".  "Y'know what?  Let 'em change the 
> frequency by hand."
>
> The R-105/R105A (ARR-15) has a 10-channel autotuner and the technology 
> (combination-locksmith w/pawls, locking keys, etc.) is nearly the same, but 
> they don't make as much of a racket and the action is a lot smoother.  You 
> can tell why when  you manually tune those.
>
> Barry
>
>
>
> ----- Original Message ----- From: "Ray" <w2ec at bmjsports.com>
> Subject: Re: [R-390] wow... the R-391A does exist - Video Update

>> "http://www.w2ec.com/Autotune.html"
>> 
>> 73, Ray  W2EC