[ARC5] lubricating BC-221 or LM freq meter gearing

[Mike Everette]

You might try removing the old, dried out original grease first.  

Use something called P-B Blaster, which can be found at auto parts stores.  DO NOT "hose" the gears; spray the stuff into a cotton swab and gently wash out and wipe out the old stuff.  Re-lubricate with a light grease. 

 An excellent product is a lubricant made for model train use, by Labelle Industries, called No. 102 Gear Oil.  It is viscous, so it'll stay put; and it's synthetic, so it won't attack anything in the LM or BC-221.  You can find this Labelle oil in a hobby shop.  It also has a syringe-type applicator tip, so you can get into a tight place easily.

73

Mike
WA4DLF





On Tuesday, January 21, 2014 6:22 PM, Bruce Long <coolbrucelong at yahoo.com> wrote:
 
May not be very helpful but last year I removed the dryed grease from a National PW gearbox and got it sqeeky clean with solvents.
The gear box moved freely but was slightly rough

Then I added a good grade of synthetic grease, not too much and the feel of the gear box was surprising better.    I'd say add a little grease.   If you don't like it it can be removed





On Tuesday, January 21, 2014 3:38 PM, Kenneth G. Gordon <kgordon2006 at frontier.com> wrote:

On 21 Jan 2014 at 12:14, Dennis Monticelli wrote:

> I have the LM version and while the freq knob turns freely I can feel
> every tooth engage and disengage; it's a bit rough.  As far as I know
> no lubrication was used originally (except for the shaft bearing which
> is not the issue) so the good news is nothing as gummed up.  But I
> wonder if judicious application of the right lubricant would make the
> tuning much smoother.  I did check the action of the anti-backlash and
> it is working correctly.  Has anybody tried applying lubricant to
> smooth the worm gear to anti-backlash gear interface?

I routinely use Tri-Flow bicycle lube for that sort of stuff.

Ken W7EKB

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