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rparigor(at)SUFFOLK.LIB.N Guest
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Posted: Wed Aug 16, 2006 9:11 am Post subject: Magnetic hardware? (was magnetic screwdrivers) 2 |
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Hmmm, sent this yesterday, never made it onto list. here goes another try:
On Mon, Aug 14, 2006, rparigor(at)suffolk.lib.ny.us said:
There were 2 replies to the magnetic screwdriver thread, one said when
going to A+P school hardware was placed in a bowl that had a magnetic in
the bottom and slight magnetized the hardware and it needed to be
discarded, and there was another reply about having to discard hardware
that becomes magnetic on turbine aircraft.
Where can you not use magnetic hardware safely on a piston, and a turbine
aircraft and why?
I read something from Lycoming when a friend was rebuilding a O-540 about
checking the hydraulic valve lifters with a thin piece of string and a
paperclip and to discard if there was more than some sort of deflection.
Initial I thought it was because it may attract metal particles and fail
the check valve, but it may be that the magnetism may hinder operation of
check valve?
I have a 914 Rotax on a Europa. Has a magnetic plug to catch debris.
Ron Parigoris
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Eric M. Jones
Joined: 10 Jan 2006 Posts: 565 Location: Massachusetts
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Posted: Thu Aug 17, 2006 5:51 am Post subject: Re: Magnetic hardware? (was magnetic screwdrivers) 2 |
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Ron,
I think you should ignore the issue.
A hand compass will disclose a lot. Consider for example that all the steel cans in your pantry are magnetic (Try it!). A steel tube fuselage will become magnetic just sitting on the ramp. A ship will become magnetic just sailing along--or can suddenly become magnetized when smacked by a wave, just as a nail can be made magnetic when struck with a hammer.
Things can be demagnetized but this is usually only a temporary fix. Most of us live on a magnetic planet...
Magnetic drainplugs are great. An internet search will tell you far more about magnetism than you ever wanted to know.
As for the advice of others...If a thing CAN be magnetized, then it will become magnetized just sitting on the shelf--so take their advice with a grain of salt.
"Hokey religions and ancient weapons are no match for a good blaster..."
--Han Solo
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_________________ Eric M. Jones
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113 Brentwood Drive
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