No subject

wiper/contact that attaches to the LMO variable cap. Only sure fix I have
used is to attach/solder a piece of copper ground strap material to the
actual variable cap rotor shaft (there is plenty of solderable shaft on
these) and attach it to the variable cap frame. Complete cure for bad/weak
contact....Its a bit of work on some LMO's but it is a sure fix. On my
SB-102 LMO, I had to completely disassemble it to get at the variable cap
shaft...It can be done with a bit of patience and care...

Mark V. Johnson
VE3DJU/VE3DDI
---------------------- Forwarded by Mark Johnson/Ontario/IBM on 06/14/2002
11:32 AM ---------------------------

"Kechkaylo Dave (ATLINKS)" <KechkayloD at TCE.COM>@LISTSERV.TEMPE.GOV> on
06/14/2002 09:55:47 AM

Please respond to "Kechkaylo Dave (ATLINKS)" <KechkayloD at TCE.COM>

Sent by:    Heathkit Owners and Collectors List <HEATH at LISTSERV.TEMPE.GOV>


To:    HEATH at LISTSERV.TEMPE.GOV
cc:
Subject:    LMO Worm Gear Grease


To All:

I have another LMO from an SB-300 which again "warbles" when it's tuned
across the band. I've found, and from others on this list, that the grease
on the gears have hardened over the years. Cleaning these gears and then
re-applying grease there cures the problem completely.

My question is: what is the best grease to use that will last and not
harden, even at cooler room temperatures? Some LMOs will exhibit this
problem from a cold start, but after warmup, thermally, by sitting next to
the tubes, the grease becomes soft, and the tuning therefore is smooth and
"warble"-free.

Regards,

Dave Kechkaylo, W8QIZ

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