Excellent suggestion.... consider a proper bronxe bushind with matching
shaft/fastener, and if there's enough material, consider machining for an
actual bearing.... altgough likely not enough.
I'm an over-engineer which is why I initially recommended a whole new sheve
with bearing.
Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: George Dubovsky <n4ua.va@gmail.com>
Date: 1/18/18 11:38 (GMT-06:00) To: jz73@verizon.net Cc: towertalk
<towertalk@contesting.com> Subject: Re: [TowerTalk] Sheave source wanted for
Rohn EF2545 erection
fixture
Chuck it in a lathe, bore slightly oversize, press in brass or steel
bushing as desired. Probably 15 minutes of work in a machine shop.
73,
geo - n4ua
On Thu, Jan 18, 2018 at 12:30 PM, Jon Zaimes <jz73@verizon.net> wrote:
> I'm trying to replace the worn sheave on the top pulley assemblies of two
> Rohn EF-2545 gin poles. This appears to be cast aluminum with a 5/16" bolt
> going through the center hole. The sheaves measure 2 3/8" outer diameter,
> and are 5/8" wide. The center hole in the sheave has worn with time such
> that these are now wobbly and risk pinching the haul rope if it jumps out
> of
> the sheave.
>
> I tried contacting Rohn and they directed me to their distributors. The
> first I called said they couldn't help me, and the second said they didn't
> have it but would try their contact at Rohn.
>
> There is no listing for this part in the online Rohn catalogs for this.
> I've
> been unable to match up anything of this size or close from any industrial
> suppliers thus far.
>
> Anyone have a source?
>
> There's a photo here: http://www.aa1k.us/sheave
>
>
>
> 73/Jon
>
>
>
> Jon P. Zaimes, AA1K
>
> Tower climber for hire
>
> http://www.aa1k.us/
>
>
>
> Reviews of AA1K tower work on eham website:
> http://www.eham.net/reviews/detail/12922
>
>
>
> Hug your favorite tower every day, and always stay connected to it.
>
>
>
> _______________________________________________
>
>
>
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>
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