[R-390] More geartrain rebuild info

[robert.boyd at sdc-dsc.gc.ca]

Hi:

Another great cleaner and almost as good as carbon tetrachloride is available from your friendly local dry cleaner. It's called perc for short-don't know the full chemical name. Arrive with a 500 ml bottle and green stamps-most times you'll get it for free!

Robert, VE3BE  

-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net] On Behalf Of Bob Camp
Sent: 2005-02-25 10:03 AM
To: Barry; R-390 HF Receiver List
Subject: Re: [R-390] More geartrain rebuild info


Hi

For a nice complete list of all the things that work best check out the 
Montreal protocols under the heading "banned substances".

The closer you get to something like carbon tetrachloride the better it 
works. At the moment (like for another couple of months) they can still 
sell you bromide compounds that at least work a little like the 
chlorine based stuff. That stuff starts going away in June at least for 
electronic applications.

	Enjoy!

		Bob Camp
		KB8TQ


On Feb 25, 2005, at 9:30 AM, Barry wrote:

> This geartrain was just a tad dirtier than my first one, but not by 
> much.  I
> did not tear down the first one because I had no instructions for 
> putting it
> back together.  Now that I've done the complete teardown on this one 
> and
> found what I have found, once I get this radio finished, I'm probably 
> going
> to tear down my first one and do a complete cleanup on it too.
>
> After taking all the gears off, I took the cam/frame assembly to the
> automotive shop here at work and washed it in one of their parts 
> cleaning
> tanks.  It didn't really do much to cut the dried grease.  I tried 
> denatured
> alchohol with not much better results and am now using kerosene.  That 
> works
> a little better than the other things I've tried, but it doesn't really
> dissolve the dried grease without a lot of rubbing either.  While it 
> might
> work better, I really don't want to have an open container of 
> gasoline.  Any
> other good solvents?  Brake Cleaner?  Carb Cleaner?  Fire?
>
> Barry(III) - N4BUQ
>
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