Use a Harken Carbo Air Block and it will pretty much never need lubrication and it won't rust... Or conduct electricity... Or conduct EMF.
A 40mm may be big enough but the 57mm is a guarantee. Use the cheek mounted style. I've provided a link below. ~$45. http://www.harken.com/productdetail.aspx?id=4725&taxid=418 Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Apr 3, 2016 9:28 PM, "Andrew Frame via CnC-List" <cnc-list@cnc-list.com> wrote: > > This isn't for my boat, but it is about marine hardware, sort of... > > First, background: > > I have to hang a dipole antenna for our emergency management amateur radio > station. We're going to take advantage of some well placed concrete light > poles in the parking lot. The dipole must be able to be lowered to the > ground during severe weather, so a pulley will be mounted to the top of > each of three poles. > > Normally, for an easily accessible location, I'd get hardware-store > galvanized pulleys, lag bolt them to the top of the pole, and grease them > once or twice a year. > > But, accessibility *is* going to be an issue. I have to get the fire > department's bucket to get to the top of the pole. > > So, I pondered using marine stainless hardware and pulleys for the > installation. I'm not sure, so posting this for those who wish to offer a > thought. Feel free to respond direct if you don't want to post to the group. > > Thanks in advance, > > A! > > Andrew Frame > s/v Otter, C&C 24 > Alva, Florida > > _______________________________________________ > > This list is supported by the generous donations of our members. If you > like what we do, please help us pay for our costs by donating. All > Contributions are greatly appreciated! >
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