[TowerTalk] Rohn 25G flat, top section

[Wayne Kline]

Stan



The Rohn  TB3 ,TB4  bearing  Bolt circle  Dia.  Is 5.375  “  with 4    .500” holes spaces 90 deg.  around the circumference .

Rohn used .462 Dia.  Shouldered  bolts b for  mounting ..



Wayne W3EA



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________________________________
From: TowerTalk <towertalk-bounces at contesting.com> on behalf of Stan Stockton <wa5rtg at gmail.com>
Sent: Saturday, September 22, 2018 6:32:26 PM
To: KK9A
Cc: TowerTalk at contesting.com
Subject: Re: [TowerTalk] Rohn 25G flat, top section

Thanks, John. No, I would never use a Rohn bearing.  Just needed to drill
holes in a piece of Delrin.

Stan


On Sep 22, 2018 4:59 PM, <john at kk9a.com> wrote:

I am not a fan of Rohn bearings, especially in corrosive environments but
regardless I found that DX Engineering has the bolt circle pattern in their
TB3 description.

GL
John KK9A

From:   Stan Stockton <wa5rtg at gmail.com>
Date:   Sat, 22 Sep 2018 13:46:18 -0500


Need the bolt pattern for a Rohn flat, top section - current part number is
25AG4.or the bolt pattern for a Rohn TB3 which should fit what is drilled
on the flat top section.  Center of hole to center of adjacent hole on the
TB3 will work.

Thanks...Stan, ZF9CW

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