Awesome, thank you Roy!
Sent from my iPhone
> On Mar 22, 2023, at 11:43 AM, Leeward Rail wrote:
>
>
> Hi Randy,
>
> Good news..
> I was just organizing my spring task lists and found the measurements in my
> notes.
>
> My boat is a 1978 30 Mark 1.
>
> Masthead Sheaves are for both wire
Hi Randy,
Good news..
I was just organizing my spring task lists and found the measurements in my
notes.
My boat is a 1978 30 Mark 1.
Masthead Sheaves are for both wire and rope:
Material: Aluminum with bronze bushing
7/16" I.D. (bolt/shaft hole not the bushing hole)
9/16" Wide x 3.5"
Hi Dennis,
No, Grenadine’s sheaves are definitely much thinner and larger diameter, and
aluminum.
Cheers,
Randy
> On Mar 16, 2023, at 8:58 AM, Dennis C. via CnC-List
> wrote:
>
> Randy,
>
> They look like this?
>
>
Thanks Roy. Grenadine has always been a freshwater boat, so corrosion is not
an issue.
The main halyard masthead sheave is a bit buggered on one of its rims from the
halyard jumping the sheave and being pried back out. I don’t know if it’s a
chafing risk for a new all-rope halyard, but it’s
They look way to wide for the masthead sheaves on a C 30.
The important measurements are:
- Size of axle hole
- Overall diameter of the sheave
- overall width of the sheave
Extra measurements:
- Width of the rope groove (ie what size rope will it hold
- Width of wire groove
See:
Randy,
They look like this?
https://drive.google.com/file/d/0B_sb5TfIENvsTzNCZWtUQ2JQeVE/view?usp=share_link=0-Em5B_AxQTt0SXnJYhnRneA
I had these on my desk for years along with a mast base exit fitting. I've
looked everywhere and can't find now them to measure for you.
--
Dennis C.
Touche'
Randy,.
Forgot to mention. The original C masthead sheaves are aluminum with bronze
bushings. Basically bulletproof and superior to modern plastic ones.
They likely just need cleaning and lubrication.
That said, some people have concerns that the dual groove design causing
premature wear
