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Re: [TowerTalk] [Bulk] Lifting a mast off the rotator

To: Grant Saviers <grants2@pacbell.net>, towertalk@contesting.com
Subject: Re: [TowerTalk] [Bulk] Lifting a mast off the rotator
From: Jon Pearl - W4ABC <jonpearl@tampabay.rr.com>
Date: Mon, 25 Apr 2016 18:01:27 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
I think this is a great idea, Grant.

Would you agree, though, that a second Nord-Lock washer would be appropriate underneath the spacer, as well?

There are numerous 'fixes' including the use of safety wire and folding tab washers but the fact that the centering fixture must sit squarely over top of the bolt removes a lot of these options. Additionally, a second Nord-Lock may create a clearance issue within the cup of the centering device which may necessitate the cup's needing to be drilled a bit deeper.

I'll report back tomorrow after I purchase a couple of Nord-Lock washers. The rotator's on the bench.







73,


Jon Pearl - W4ABC
www.w4abc.com



On 4/25/2016 10:41 AM, Grant Saviers wrote:
The used OR-2800 was driving a 3" mast, but I have one driving a 2" without a centering block w/o problems (so far) but a bigger load is going onto the 2" mast shortly.

Medium strength Loctite is a good idea if the internal threads can be degreased. Instead of a split ring washer, I use Nord-Locks for critical fasteners. Check out their video re locking fastener tests.

http://cdn.nord-lock.com/wp-content/uploads/2015/12/Nord-Lock-Junker-test-HD_1280x720.mp4

Grant KZ1W


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