I use military surplus pulleys. They have really narrow space between the
pulley and the bracket. So never faced this problem. However, very nice and
practical idea. Thanks for sharing.
On Mon, 27 Sep, 2021, 01:26 , <kliegle@myfairpoint.net> wrote:
>
>
>
>
> If I think there might be an issue with the antenna rope jumping the
> pulley and wedging itself between the pulley and the bracket that holds the
> pulley, I drill a hole through both sides of the bracket and install a
> cotter pin, with just enough room for the pulley to rotate. In the aviation
> world, it's called a guard pin. It keeps the stainless steel flight control
> cables from jumping off the pulley and jamming. (not a good thing!)
>
> See the following image:
> https://www.flight-mechanic.com/wp-content/uploads/2017/07/2-74-768x463.jpg
>
> The larger the diameter the pulley, the easier it is to pully either a
> wire or line through. I found the old pulleys from garage doors in the
> scrap yard work VERY well! Just have to drill and install the guard pin.
> Plus I lube the bearings/sleeve with marine grease before installing.
>
> With proper sizing of the pulley and antenna rope, there shouldn't be
> any issue with the rope getting wedged. But the problem is they don't make
> many large diameter pulleys for the small size antenna rope used. Hence my
> use of old garage door pulleys that are made for small diameter cable and
> have large diameter pulleys!
>
> YMMV
>
> 73 Kriss KA1GJU
>
>
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