[Rhodes22-list] Critical Standard Mainsail Standing RigDimensionsFor Rhodes 22

[Lloyd Crowther]

Sarjo,

The boom on my '84 Rhodes is nine feet six inches long and it has that same
furling feature of pulling it aft (maybe it is then 9'8") to rotate the boom
and supposedly roll the mainsail around it that you describe.  However, I
also am able to reef my main to the reefing points with a system consisting
of two lines that are fed through grommets in the main in line with the
reefing points, which is the system I use.

I always felt that the feature of rotating the boom was a pain in the A**
when I was trying to furl the main on the boom after taking the bolt rope
out of the mast but since I now have slugs on the mainsail luff ( but not on
the boom) the mainsail stays attached to the mast and is easy to furl and
fits much better under my sail cover when I am buttoning up after sailing
single-handled.

To those of you who responded to my query about Mainsail slugs last winter,
thank you.  I had them put back on minus the slug at the headboard and that
solved the problem.  Incidentally the boss at the sailmaker (previously
named) told me I (you-all) was (were) crazy  but agreed to do it after I
pointed out that I was paying for it and with the cash came the right to be
crazy!  A costly lesson for me but not for him because I had cut all the
original slugs off after I couldn't get the main all the way up and I wanted
to go sailing.  At least I kept the slugs which cut the price down somewhat.

Lloyd

----- Original Message ----- 
From: "Saroj" <saroj at pathfind.net>
To: "The Rhodes 22 mail list" <rhodes22-list at rhodes22.org>
Sent: Tuesday, July 06, 2004 11:17 PM
Subject: Re: [Rhodes22-list] Critical Standard Mainsail Standing
RigDimensionsFor Rhodes 22


> This is just fantastic information, Roger.  In the upper boom position on
> Pathfinder, which is my normal sailing position except where reefing is
> advised, the clearance is just an inch or two with the backstays
tightened.
> That is from memory.  I've got to take measurements this week to get
precise
> about it.  I would think that my boom is standard issue because it has
that
> furling feature wherein if I pull on the boom towards aft, I can rotate
the
> boom and theoretically at least could roll the main sail around it for
> reefing.  I've never heard anyone on the list talk about doing this, but I
> recall reading about this somewhere quite a few years ago.
>
> I wouldn't describe what happens as "getting caught between the
backstays".
> It is more that when tacking, the boom gets caught on either backstay.
>
> Is it possible that I am tightening the backstays too much and decreasing
> the distance between the mast and the stays?  This seems unlikely as the
> mast doesnt' really have that much flex down low at that point.
>
> Again, many thanks.
>
> Saroj
>
> ----- Original Message ----- 
> From: "Roger Pihlaja" <cen09402 at centurytel.net>
> To: "The Rhodes 22 mail list" <rhodes22-list at rhodes22.org>
> Sent: Tuesday, July 06, 2004 8:38 PM
> Subject: [Rhodes22-list] Critical Standard Mainsail Standing Rig
> DimensionsFor Rhodes 22
>
>
> Saroj, Keith, et al,
>
> I just went thru my files & looked up the dimensions & geometry of Dynamic
> Equilibrium's standing rigging and mainsail before I modified  the
masthead
> casting.  First of all, here are the dimensions of a standard Rhodes 22
> mainsail:
>
> Max Luff: 21 feet - 8 inches
> Max Foot: 9 feet - 0 inches
> Mainsail Area: 110 square feet
> Boom Length From Aft Mast Face To End Of Boom: 9 feet - 8 inches
>
> Nominal Backstay Angle Relative To Horizontal When Backstays Are Taut &
Mast
> Bend = 0.00 Chord Inches: 65.68 deg
>
> Horizontal Distance Along Top Of Boom From Aft Mast Face To Backstay:
> With Boom In Upper Position: 10 feet - 1-1/2 inches
> With Boom In Lower Position: 10 feet - 9-1/2 inches
>
> NOTE 1: In the lower boom position, the boom clears the backstays by
13-1/2
> inches when the boom is horizontal, angle = 0 deg
> When I do the algebra & trig, the boom would have to rise to an angle =
67.3
> deg relative to horizontal to hit the backstays
> The aft end of the boom would have to rise up by 107 inches to hit the
> backstays
> This is a very extreme angle for the boom & highly unlikely
>
> NOTE 2: In the upper boom position, the boom clears the backstays by 5-1/2
> inches when the boom is horizontal, angle = 0 deg
> When I do the algebra & trig, the boom would have to rise to an angle =
53.9
> deg relative to horizontal to hit the backstays
> The aft end of the boom would have to rise up by 93-3/4 inches to hit the
> backstays
> This is a very extreme angle for the boom & highly unlikely
>
> Boy, from these calculations, I don't see how you managed to get the boom
> caught between the backstays unless your upper boom position is a lot
higher
> than mine or your boom is longer?
>
> Hopefully, these standard Rhodes 22 rig dimensions will help you resolve
> your boom/backstay interference issues.
>
> Roger Pihlaja
> S/V Dynamic Equilibrium
>
>
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