[R-390] Offset gear source Pass_2

[Cecil Acuff]

All the thing does is keep the Veeder-Root counter in sync with the RF deck 
gear train.

It's not a big deal.  You set the RF deck to align all the cams, and set the 
Veeder-Root counter to read the magic number....Can't ever remember what it 
is for the R-390/URR...it's different from the "A".  Bolt the two back 
together.

The trickiest part is making sure you don't get the Band Switch shaft out of 
sync.  If memory serves me correct it can end up in different places each 
time the RF deck it rotated through alignment.  Meaning you can rotate the 
gear train continuously in one direction and achieve alignment of the cams 
but still have the Band Switch out of alignment.  You then have to continue 
in the same direction and go around the world to come back to alignment 
again and see where the band switch is.  I think it's only an 180 degree 
thing so I think you have a 50/50 chance with it.  What I did was took a 
spring loaded punch and put a dimple in the face of the two drive gears on 
the rear of the RF deck where the teeth mesh with everything in alignment on 
disassembly and that way you just get the cams in alignment, make sure the 
dimples align, bolt the Veeder-Root counter on with the magic numbers 
displayed and you are done.

No green gear needed.

I fretted about it at first too but learned quickly it was not really 
necessary.

Cecil Acuff
K5DL


----- Original Message ----- 
From: <Flowertime01 at wmconnect.com>
To: <R-390 at mailman.qth.net>
Sent: Sunday, May 11, 2008 1:26 PM
Subject: Re: [R-390] Offset gear source Pass_2


> Fellows.
>
> Ed ask, Can anyone tell me where I can come up with the elusive green
> (offset) gear for my R-390? Thanks in advance for any help. I really need 
> to pull the
> RF deck as part of a restoration project.
>
> Would someone again count the teeth and measure the size of that mystical
> gear?
>
> We could then find a half dozen generic sources of a gear with the right
> number of teeth and diameter. The center bore is not critical. We could 
> find a
> thick gear so the thickness is not critical. Then the guys who need these 
> things
> could get a gear that fits the needs for their maintenance work.
>
> Fellows have cut rubber washers and bolted these in to lock up the deck 
> gears
> for a maintenance procedure.
>
> How about some who has one of these R390 decks in hand doing a write up as 
> to
> what that gear does for us when it is installed and the deck is pulled.
>
> Then we can write up a procedure to get a deck reset if you pull it 
> without
> the gear.
>
> I bet its all in the archives and we just need to get it pulled back to 
> the
> surface.
>
> Thanks
>
> Roger AI4NI
>
>
>
>
>
>   </HTML>
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