[R-390] Slug Rack Lube?
Bob Camp
ham at cq.nu
Sun May 15 17:57:01 EDT 2005
Hi
Be careful with Teflon gun lubes in combination with other odd
lubricants and cleaners. You can wind up with Teflon gumbo in a big
hurry.
Moly powder and talcum powder have both been suggested as core lubes
for the R390 not an A's .
Enjoy!
Bob Camp
KB8TQ
On May 15, 2005, at 4:02 PM, Cecil Acuff wrote:
> Hi Barry and Group,
>
> I have been working on an R-390 recently that is also
> exhibiting the squeaking noise on a couple of the racks. I know
> it's not the coming from the cam/bearing contact points because
> they are well lubed and all rotating. (bearings) The ends of the
> slug racks and the RF deck frames are not touching or loose in my
> radio so It's not that...so it only leaves the cores sliding in the
> coils. The R-390 has no adjustment that allows tensions to be
> removed from the cores due to slight misalignments as the "A"
> does. I noticed the cores are also coated with some type of shiny
> outer coating as well. Maybe to aid in friction reduction.
>
> I have heard of guys using a ceramic stone and polishing those
> contact points. I would assume some type of lubrication would also
> be in order. I have used the Mobil 1 synthetic lube at those
> points as well with good luck.
>
> A good Teflon gun lube would also be another thought...
>
> Cecil...
>
>
> ----- Original Message ----- From: "Barry" <N4BUQ at aol.com>
> To: "R-390" <R-390 at mailman.qth.net>
> Sent: Friday, May 13, 2005 10:04 PM
> Subject: [R-390] Slug Rack Lube?
>
>
>
>> What are some of you guys using to lubricate the slug racks? I
>> have a very
>> squeaky 0.5 - 1.0 rack. It is not the cam followers, but the rack
>> sides
>> against the frame. I had thought about some kind of silicone coating
>> (spray?) but didn't know. It seems MobilOne is too thin in this
>> area, but
>> maybe not.
>>
>> Thoughts?
>>
>> Thanks,
>>
>> Barry - N4BUQ
>>
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>
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