[Rhodes22-list] centerboard attachment

Ellyn and Sam Moore eandsmoore at hughes.net
Fri Mar 7 09:37:00 EST 2014 

I really don't thing we can call this a dangerous weakness in the boat.
All boats, and boating, especially sailing, have risks. Seamanship is
about minimizing the dangers. I think that as a rule, the centerboard will
flip back and up when an obstacle is hit. But as sailors we do our best to
stay off the rocks. Maintain the craft, know your waters, pay attention. I
was really glad when our cb hit bottom and flipped up. If it had been a 
keelboat we might have been hard aground on a falling tide. 

Sam Moore
'77 R22 S/V Roadster

On Mar 7, 2014, at 8:51 AM, Ric Stott wrote:

> Hmm!
> I'm very grateful for this thread and this communication.
> I see this as an inherent and dangerous weakness in the boat.
> I was sailing in a keel boat once long ago. We were on our way to a  
> race in Fisher's Island sound.
> It was foggy and before GPS, we proudly knew  where we were, but not  
> to the nearest yard.
> There are some tall rocks close to the edge of the channel in  
> otherwise very deep water.
> There was a 2  ft chop  on a 2  foot swell from offshore and it was  
> low tide.
> The wind had dropped off and we were moving only a knot or two,  
> bobbing in the bumps.
> Cocky and content, alert and on watch, we were cruising along with the  
> chute up.
> Suddenly, the boat dropped off a wave on the keel came down on a rock.  
> We hit so hard I bit my tung  bloody from the impact. The mast and  
> rigging twanged like it broke. We quickly checked the bilge fearing  
> the worse, but to everyones surprise - no leaks.
> An underwater inspection revealed a big dent on the bottom of the lead  
> keel.
> If that happened in a Rhodes 22, it would have driven the CB right  
> through the cap and flooded the boat.
> No wonder Stan builds in floatation.
> 
> There must be a solution here.
> What holds the garden hose in place, anybody know?
> 
> Ric
> Dadventure
> 
> 
> On Mar 6, 2014, at 9:58 PM, cjlowe at sssnet.com wrote:
> 
>> I have a different take on some of these issues, don't know if I'm  
>> right,
>> probably just a different take. I think I remember someone on the list
>> saying the pcv pieces slide on each side of the cb pin and act as a
>> sacrificial bushing , so the stainless steel pivot pin doesn't eat  
>> out the
>> fiberglass in the side and bottom of the grove. Hope I didn't dream  
>> that,
>> because I spent a lot of time making them bushings, mine didn't have  
>> them.
>> I'm not sure trying to limit the cb's vertical movement is the best
>> idea. I'm thinking anything you put in the channels has a chance of
>> falling out and jambing the cb travel. Anything hard screwed in the
>> channels has a good chance of tearing big holes in the cb trunk and
>> taking out both sides of the cb cap. If you think fixing the cb cap  
>> was
>> a pain, ask Lou how much fun it is to do repairs inside the  
>> centerboard
>> trunk.
>> I'm thinking the best bet is to not anchor/moor in shallow water,  
>> don't
>> motor backward in shallow water, and NEVER EVER splash the boat unless
>> the cb pendant is cleated with the cb in the UP position. Any other  
>> ides
>> on this are more than welcome.
>> 
>>   Jerry
>> 
>> 
>> 
>>> I have changed the title of this exchange as it appear the topic has
>>> morphed
>>> from the matter of the mast post base to the question of how the
>>> centreboard
>>> is attached and how this might result in damage to the cap if the
>>> centreboard is not held in the up position when launching.
>>> 
>>> My centreboard pivot pin rides in two vertical channels in the  
>>> housing
>>> that
>>> are about 5" long. Those grooves are very clear in the second photo  
>>> that
>>> Rob
>>> Lowe just posted. As I saw it, the channels would allow the pin to be
>>> dropped down to the proper position without the need to insert the  
>>> pin
>>> from
>>> the outside of the housing.  It now occurs to me  that this design  
>>> might
>>> also have been intended to allow the pivot pin to rise up inside the
>>> housing
>>> should the centreboard hit something. Makes sense although perhaps  
>>> not if
>>> this would allow the centreboard to damage the cap.
>>> 
>>> In my case two length of .5 inch rigid PVC  pipe were placed in each
>>> channel
>>> above the pin. It appears that these pipes were intended to prevent  
>>> the
>>> pin
>>> from rising up. As I mentioned earlier, I was pretty sure that the  
>>> cap had
>>> never been removed and assumed, therefore, that the pieces of pipe  
>>> were
>>> part
>>> of the original design. Now I am beginning to wonder if this was  
>>> some kind
>>> of retrofit by a previous owner who, perhaps, was responding to  
>>> damage
>>> caused when the centreboard was pushed into the cap.
>>> 
>>> I am inclined to leave the pieces of pipe out when I reinstall the
>>> centreboard or perhaps search for something that might act as a shock
>>> absorber but still allow the board to raise up if it hits a solid  
>>> object.
>>> Perhaps shorter lengths of flexible plastic tubing would work.
>>> 
>>> Has anyone else found a similar arrangement in the pivot pin channel?
>>> Any thoughts?
>>> 
>>> Graham
>>> 
>>> 
>>> -----Original Message-----
>>> From: rhodes22-list-bounces at rhodes22.org
>>> [mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of Lowe, Rob
>>> Sent: March-06-14 3:13 PM
>>> To: The Rhodes 22 Email List
>>> Subject: Re: [Rhodes22-list] Searching the archives and settled  
>>> step >now
>>> mast step cb leak
>>> 
>>> It seems like there are various versions of CB and the lift  
>>> systems.  Here
>>> are some photos that someone (I forgot who, sorry!) posted of their  
>>> CB
>>> taken
>>> apart. - rob
>>> 
>>> http://www.rhodes22.org/pipermail/rhodes22-list/attch/200507/14/Getaway1.jpg
>>> http://www.rhodes22.org/pipermail/rhodes22-list/attch/200507/14/Getaway2.jpg
>>> 
>>> 
>>> 
>>> -----Original Message-----
>>> From: rhodes22-list-bounces at rhodes22.org
>>> [mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of Ric Stott
>>> Sent: Thursday, March 06, 2014 2:00 PM
>>> To: The Rhodes 22 Email List
>>> Subject: Re: [Rhodes22-list] Searching the archives and settled  
>>> step >now
>>> mast step cb leak
>>> 
>>> Thanks Graham
>>> It might have been cracked when they loaded it onto a trailer to  
>>> launch
>>> last
>>> spring and delivered it to me.
>>> It was a transport trailer.
>>> Sam replied that the pendant had to be cleated when trailered, or  
>>> it would
>>> cause a crack.
>>> I'd like to understand the mechanics of that reply.
>>> Is the top or aft edge of the CB that close to the cap, and what  
>>> component
>>> would allow it to move vertically, a hinge pin?
>>> Is there a CB diagram anywhere?
>>> I think it was leaking, but very little until later in the season  
>>> then
>>> - after a storm, it got much worse.
>>> The boat may have been on the bottom or bounced on the bottom at a  
>>> very
>>> low
>>> tide.
>>> I'll take it apart when it warms up.
>>> Pendant - Braided nylon is very stretchy - is that what we want?
>>> Ric
>>> 
>>> On Mar 6, 2014, at 1:24 PM, Graham Stewart wrote:
>>> 
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>> 
>> 
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