My main question about the pin in a hole is: did rust form between the
pin and the inside of the hole, or just on the surface where it would be
something that would need to be sheared off when the pin is moved? I
think a better, but non-scientific test would be to find a set of bolts
on the suspension of our cars that have not bee loosened in many years
and try one penetrant on one bolt and different ones on.others.
Peace,
Pat
Thusly spake John T. Blair:
> At 10:40 PM 12/16/2007 -0600, Elton E. (Tony) Clark wrote:
>
>
>> *I wish we could come up with a objective test method that we each could use
>> to test the "home brew" against our favorite penetrant . . I've always been
>> a "Kroil" fan but 5 or 6 of my buddies and I are using the acetone/ATF with
>> unscientifically documented good results . . Any ideas for a "rusted
>> thread" standard test?*
>>
>
> Someone said they didn't like or accept the test that was used for the
> penetrants. That a pin was not a thread. True a pin is not a threaded
> rod, but to me his test is quite valid, but maybe not for what we are
> thinking. His test was uniform, and does measure the abiliby of a
> penatrant to penatrate. A force fit pin has a lot less clearence than
> a thread. And it's ability to lubricate. Which we need to help lessen
> the effort required to break something loose.
>
> Now if you really want a test to be more realistic, repeat the same test
> with one difference. Use bolts instead of pins. The aging process could
> stay the same, and in fact seems quite good. Then you'd need something
> like a socket on a breaker bar, and a spring scale, preferably with a
> teltale, or sticking highest reading so you'd know how much torque was
> exerted.
>
> John
>
>
>
> John T. Blair WA4OHZ email: jblair1948@cox.net
> Va. Beach, Va
> Phone: (757) 495-8229
>
> 48 TR1800 48 #4 Midget 65 Morgan 4/4 Series V (B1106)
> 75 Bricklin SV1 (#0887) 77 Spitfire 71 Saab Sonett III
> 65 Rambler Classic
>
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>
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--
Pat Horne, Owner, Horne Systems
(512) 797-7501 Voice 5026 FM 2001
Pat@HorneSystemsTx.com Lockhart, TX 78644-4443
www.hornesystemstx.com
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