[Rhodes22-list] Pivot pin bushings

Fri Mar 7 20:03:55 EST 2014

Todd,

  Go to the nabble  page and search garden hose. Should show loose
centerboard after the ads. The one headlined by Billy-Doc has pics. of
the bearings and the hose. The time line is oct. 2010.
  I didn't put the garden hose in on the last rebuild, but it probably
wouldn't hurt.
  I've had the cb out twice since I bought the boat and even the first
time I didn't see any evidence of pivot pin bushings. Like you, I
thought there was a lot of play in the channels. The clearance between
the pin and the cb was ok. I used pvc water pipe, I think it was 3/4".
UHMWPE would probably be better, but I didn't have that in the pile of
junk in the basement. I don't remember the measurements, but I put the
pin in the channels , pushing it to one side and measureing the small
gap between the pin and the outside of the other channel, add the pin
length to the small gap to get max. length of pin and bushing assembly.
Subtract that from the thickness of the centerboard, and devide that by
2 to get the no slop ,self centering, length of each bushing. After
cutting to length, I sanded the outside to fit snugly in the bottom of
the channel, and bored the inside to slide easily onto the pin. My hope
is the bushings will not move in the channel, creating more wear in the
fiberglass, and all the wear will be to the bushings.

    Jerry

> Todd,
>
>   I love ya man, but I 'm not tearing apart the  cb cap and yanking the cb
> out to take photos if the pin and bushings. I didn't take pictures at
> the time of repair. I have to go to lunch with my wife right now but I
> will try to look up more on this when I get back.
>
>   Jerry
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> Jerry,
>>
>> Can you post pbbics of your pin and bushings? My cb flops around a bit.
>> I
>> may have to turn a new shaft and bushings on the lathe.
>>
>> There was also a thread sometime ago about putting short pieces of hose
>> in
>> the trunk to limit movement of the cb. If anyone has those pics or an
>> idea
>> when it was, I would appreciate if you could post and comment.
>>
>> Todd T.
>> --
>> Sent from my Android phone with mail.com Mail. Please excuse my brevity.
>>
>> 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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