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[Towertalk] structural assumptions// bolts - Orion 2800

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Subject: [Towertalk] structural assumptions// bolts - Orion 2800
From: (Kim Bottles)
Date: Thu, 13 Jun 2002 06:48:09 -0700
Is it April?

-----Original Message-----
From: FireBrick [] 
Sent: Thursday, June 13, 2002 6:14 AM
To: TowerTalk List
Subject: Re: [Towertalk] structural assumptions// bolts - Orion 2800

Bolts loosen because rotational effects work on them torque wise.

For example if you put a Phillips head bit into an electric drill and
tighten the chuck, the bit will drive screws and never loosen. But use
the drill in reverse, and a resistant screw may result in the the chuck
loosening and the bit spinning.

The rotor bolts are loosening due to the users rotating the antenna
counter clockwise too often.

Hams below the Equator do not have that problem due to the opposite
rotation due to the reverse gravitational effects. Their rotor clamp
bolts are always tightening.

Michigans State Motto: First Line Of Defense From The Canadians

Bill H. in Chicagoland

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