[TowerTalk] Rotor plates

[Jeff Maass]

There is (almost) nothing harder to drill than
galvanized plate like the Rohn rotor plates!

I had to take mine to a shop to have it done by 
someone with a very heavy-duty drill press and
proper very-hard bits. It took a while, with 
some cursing thrown in.

Cold galvanizing will probably not hold up
against moisture in that application (threads
will wipe it away), but you can start there.

What do others suggest?

73,

Jeff Maass  K8ND
 

> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com]On Behalf Of kb9cry at comcast.net
> Sent: Thursday, November 04, 2004 8:05 AM
> To: TowerTalk List
> Subject: Re: [TowerTalk] Rotor plates
> 
> 
> That's probably because rotator plates are not meant (by Rohn) to be used with 
> TB-3 thrust bearings, just rotators.  The Rohn top plates are drilled for TB-3s 
> but not rotators.  I'd say get out your drill and have at it.  Don't forget to 
> spray some cold galvanizing on the inside of the holes as you'll have bare, 
> unprotected metal there.  Phil  KB9CRY
> 
> > I stand corrected. Just looked at a spare one I have around and, sure 
> > enough, no TB-3 holes! 
> > 
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