SB-101 LMO

[Army Curtis - AE5P]

Rich,

I think you will find that the problem is in the washer-like devices, each
with a tab stop, on the LMO shaft. They are a very clever arrangement to
"count turns", and limit the total number of revolutions the LMO shaft is
allowed to make. When the unit has sat unused for a long time, one or more
of the devices often tend to stick together, and limit the turns count to
something less than the original. 

While you could always disassemble the whole mess and unstick them, I
frankly have had pretty decent luck in simply turning the main knob rather
quickly into the improper "stop" (the one at 3+ on your dial), until they
unstick. I can't promise it will work in every case, but it has worked quite
well for me, and is definitely a whole lot easier than a complete
disassembly of the LMO.

Hope this helps.

Army Curtis - AE5P
Nacogdoches, the oldest town in Texas


-----Original Message-----
From: Heathkit Owners and Collectors List [mailto:HEATH at LISTSERV.TEMPE.GOV]
On Behalf Of Rich Evans
Sent: Saturday, March 03, 2007 9:58 PM
To: HEATH at LISTSERV.TEMPE.GOV
Subject: SB-101 LMO

I'm have a mechanical problem with the LMO in my original SB-101.

I'm almost finished with restoration, but I now find that the LMO shaft
or knob only make a little over 3 revolutions, instead of the 5.  This
translates to the dial pointer moving from 0 to 3+, rather than 5.

I took the LMO apart for the first time and I don't see anything obvious.
The var cap goes from fully meshed to about 60 percent open.

The shaft has a series of washer-like devices on it, each with a tab stop.
I think the problem must be in this area; I must be missing something
obvious.

Has anyone had anything like this before?  The 101 sat idle for almost
20 years ( kids, etc.), now it's time to roll. Everything else is up to
spec,
bust this LMO thing.   Thanks.

Rich  W3FYD

-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved.  This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind.  Buyer beware!

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.aspx?list=HEATH
To post - HEATH at LISTSERV.TEMPE.GOV
Archives - http://listserv.tempe.gov/archives/HEATH.html

-- 
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.446 / Virus Database: 268.18.6/709 - Release Date: 3/3/2007
8:12 AM
 

-- 
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.446 / Virus Database: 268.18.6/709 - Release Date: 3/3/2007
8:12 AM
 

-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved.  This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind.  Buyer beware!

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.aspx?list=HEATH
To post - HEATH at LISTSERV.TEMPE.GOV
Archives - http://listserv.tempe.gov/archives/HEATH.html