[TowerTalk] Heights Tower - Separating Aluminum from Steel

[Dubovsky, George]

And after all that soaking with penetrant, take advantage of the
different coefficients of expansion of the two materials. Aluminum will
expand about twice what steel will at the same temp. Put a heat gun on
the legs (a torch is a little too uncontrollable) and get the temp up to
250-300 F or so, then whack and bang and press or whatever, and it
should come on off.

73,

geo - n4ua

> -----Original Message-----
> From: towertalk-bounces at contesting.com [mailto:towertalk-
> bounces at contesting.com] On Behalf Of Roger K8RI on Tower
> Sent: Tuesday, June 21, 2005 10:23 PM
> To: towertalk at contesting.com; Bill Tippett
> Subject: Re: [TowerTalk] Heights Tower - Separating Aluminum from
Steel
> 
> As Jerry said, soak them with penetrating oil. Have patience.  Give it
a
> good soaking, every couple of hours, and test carefully.  If they do
not
> come loose easily, let set overnight.  They teach this in small engine
> repair.  I've seen pistons bound so tight you couldn't move them with
a
> heavy hammer.  Pour enough WD40 or other penetrating oil on top so
it'll
> run
> down the sides of the piston, let set overnight and you can take it
out by
> hand the next day.
> 
> Roger Halstead (K8RI and ARRL 40 year Life Member)
> N833R - World's oldest Debonair CD-2
> www.rogerhalstead.com
> 
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> 
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with
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> 
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