[Rhodes22-list] Was Sails Now Boom Vangs

Wed Jan 13 10:46:13 EST 2010

David, Many of us would be interested in your boom vang/restricter.  
The patent issue is your call. From my association with Rhodes 22 (The 
List) if there is any way fellow sailers can benefit, especially 
safety, there is support. My experiences with Stan at General Boats has 
also been very positive so if we can help Stan, in any way, like has 
helped so many over the years a cooperative agreement might be a good 
direction.  I look foward to reading and hopefully seeing more of your 
project. 
Jim Johnston "LOON" Torch Lake, MI

Quoting Todd Tavares <sprocket80 at mail.com>:
>
>  David,
>
>   You better patent it before you post pics or descriptions. That way you can
> claim residuals due whenever someone copies it then sells
> their boat here on the Rhodes 22 list.  LOL
>
>
>
>
>
>
>
>
> -----Original Message-----
> From: David Culp <dculp at hsbtx.com>
> To: rhodes22-list at rhodes22.org
> Sent: Tue, Jan 12, 2010 2:59 pm
> Subject: Re: [Rhodes22-list] Was Sails Now Boom Vangs
>
>
> Since you guys brought this up and not me.... I will tell you that there is
> a way to have a "boom vang/preventer" type apparatus on the Rhodes 22 that
> works with the pop top up or down and the boom up or down.  I have been
> reluctant to mention it on this forum because it is an experimental,
> personal project.  However, like Mark McQuire I have decided to "come clean"
> with my Rhodes buds and budettes.   I built it this last summer for about $
> 150.00 dollars and have been testing it since then with good results.  It is
> not a true boom vang, but it does accomplish the three main things that I
> wanted:
>
> 1.  Keep the boom down and parallel to the deck running downwind with a
> possible performance gain. 
>
> 2.  Prevent an accidental gybe. 
>
> 3.  Not interfere with the pop top or ingress/egress from the cabin and
> works in either boom position. 
>
> An unintended result of having it installed is my new ability to sail the
> boat backwards.  I did this initially to test
> the structural integrity of the setup.  Then it became a joke.  You get some
> very interesting reactions from power boaters as you go by them sailing your
> Rhodes backwards.  Perhaps even a few have given up drinking as a result
> .... nah!  Anyway, I was going to video it and put it up on YouTube. Still
> coming, but my videographer who also participated in some of the testing is
> very sick right now and I wanted to give him a shot a being a part of it. 
>
> Issues:
>
> True boom vangs can be tightened and swing the full 180 degree travel of the
> boom.  My system has two attach points and the tensioning line must be
> released to run in the blocks in either a tack or gybe and then you have to
> move the snap shackle to the other side and re-tension.  However, it does a
> great job of controlling boom rise working downwind and really the Rhodes
> doesn't need a boom vang except downwind in my opinion.  In other words,
> with a small, end-sheeted main, you really can't depower with a vang close
> to the wind for a noticeable result.  The traveler is much more effective in
> that regard. 
>
> Accidental gybes have been tested up to wind speeds of approximately 12-13
> kts with good results but I wouldn't go much higher then that.  My target is
> 15 kts., but so far haven't gotten to test in a known steady 15 kt wind. 
>  The perfect system and there are some on the market, would allow a slow
> release of the boom to gybe the boat.  Otherwise, there are some huge
> transitional loads put on the rig, tensioning lines and hardware of this
> system or any system for that matter.  Accidental gybes in a sailboat are
> dangerous and never good for the rig regardless of what system is in place. 
>  This preventer will prevent an accidental gybe, but even better, it gives
> you more time to recognize that possibility and recover your course before
> it happens. 
>
> Should the normal Rhodes owner run out and put this on his/her boat?
>  Leaving it up to you, but most probably don't care.  Would the manufacturer
> of the boat recommend it? Probably not as presently designed.  Has it worked
> well for me and been convincing to other sailors who have witnessed its
> operation?  Yes!   Could you hurt yourself or damage your boat with it?
> Maybe, if you are not paying attention and do stupid things in high winds. 
>  Of course, that holds true in any sailing situation; so it is not
> inherently dangerous. 
>
> Now the most important thing:  Did it increase the speed of the boat?  Yes. 
>  My knot-meter tells me about .5 kts in winds 12-13 knots in relatively
> smooth water. 
>
> Someone wrote on this forum sometime time back that when they manually held
> their boom down by hand going downwind... that it was worth about 1/2 a
> knot.      $ 150.00 dollars later, I can confirm that observation as being
> pretty much true.  There are a lot of factors that control boat speed and
> your results may vary. 
>
> In the final analysis; for most people, there are better ways to spend your
> money for 1/2 a knot.  For instance, a whisker pole for the Rhodes costs
> about $ 150.00 dollars.  If you want real performance downwind, put a
> spinnaker on the boat.  I was more interested in increasing efficiency with
> the sails I have.  I never have a crew and don't want a spinnaker, so this
> is what I did. IT DOES WHAT I WANTED IT TO DO. Which is my definition of a
> successful home project. If others are interested, post your comments and I
> will build a webpage with photos fully explaining how to build it.  It's
> actually fairly simple.  You will have to decide if it is worth it to you. 
>
> David Culp
>
> Date: Tue, 12 Jan 2010 07:09:19 -0800 (PST)
> From: Leland <LKUHN at cnmc.org>
> Subject: [Rhodes22-list]  Was Sails Now Boom Vangs
> To: rhodes22-list at rhodes22.org
> Message-ID: <27128980.post at talk.nabble.com>
> Content-Type: text/plain; charset=us-ascii
>
>
> Rummy,
>
> Since you brought up the winter topic and unlike you I won't be able to sail
> until the ice melts, how about them boom vangs?
>
> Someone on this list has a removable vang that can be used with the poptop
> down but I normally sail with the poptop up and am too lazy to take a vang
> on and off. 
>
> I assume there is no practical means of keeping the boom down when the
> poptop is up or Stan would have figured it out by now.  A reverse rigid
> vang-like apparatus installed higher up on the mast could push the boom down
> but would probably interfere with the sail.  You could tie the end of the
> boom down using strategically placed cleats but that could involve a lot of
> cleats and a safety issue.  Even less safe would be a bag of weights hanging
> off the end of the boom--might be exciting during tacks and jibes. 
>
> Until someone comes up with a workable solution I guess I'll just keep using
> Boomer to hold things down, but my wife doesn't particularly like the title
> or the job. 
>
> Lee
> 1986 Rhodes22  At Ease
> Kent Island, MD
> __________________________________________________
> To subscribe/unsubscribe go to
> http://www.rhodes22.org/mailman/listinfo/rhodes22-list
>
> For the list Charter and help with using the mailing list and archives go to
> http://www.rhodes22.org/list
> __________________________________________________
>
>
> __________________________________________________
> To subscribe/unsubscribe go to
> http://www.rhodes22.org/mailman/listinfo/rhodes22-list
>
> For the list Charter and help with using the mailing list and archives go to
> http://www.rhodes22.org/list
> __________________________________________________
>