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Projection 762 Help please?

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DOUGk911 View Drop Down
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Post Options Post Options   Quote DOUGk911 Quote  Post ReplyReply Direct Link To This Post Topic: Projection 762 Help please?
    Posted: 07 Jan 08 at 10:49am
DECKING ...Such an important issue .... you will need shed loads for your massive Boat !
If you go for the 24 mm stuff from Argentina that could save a few bob . A full container load is the way to go , I've decked my Projection in the 28mm stuff and She looks so pretty !   a couple of inches lower in the water ... but what the heck !
She will still do 7 knots in a good blow . 
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j hasson View Drop Down
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Post Options Post Options   Quote j hasson Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jan 08 at 2:48pm

hi,

   throughout last season i noticed an amount of play in the rudder gettin progressively worse as time went by. i don't fully understand the mechanics involved. it has reached a stage now where it must be remedied. could anyone shed any light on this rudder play why it happens and how to fix it?

cheers

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chic View Drop Down
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Post Options Post Options   Quote chic Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jan 08 at 4:09pm

Hi,

When I bought my boat I was already a little concerned with the amount of play on the rudder - during our first season we have clocked up around 2000 miles, and having had the boat craned out earlier this week it seems to be a little worse.

The simple movement of the rudder shaft in its bearings is bound to cause some wear, but whenever there's weather helm the length of the rudder will act as a big lever putting significant forces (and consequently accelerated wear) on the bearings. Bearing wear tends to be exponential, ie the worse the fit the more quickly it wears, so this might explain why it's suddenly got worse for you over the past season. The other possibility is that the nut that holds everything together is coming undone!

I haven't yet dropped my rudder from its tube and bearings but I suspect I will have to do it before the start of next season's racing. I can tell you that the lower bearing is made from nylon and will probably have been bespoke lathe-cut to fit the shaft and hull. Finding someone to do the work may be the biggest problem, and I'm in no way certain that two boats are alike. If we could acertain that we have identical bearings maybe we could join forces in the hunt for an engineer.

Incidentally, I did ask the owner of the 'Projection Yachts' name (can't remember his name without going through the entire forum) about just this problem but although he promised to write back I never did get a reply...

Any thoughts would be welcomed.

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DOUGk911 View Drop Down
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Post Options Post Options   Quote DOUGk911 Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jan 08 at 7:09pm
My rudder bearings were replaced before I got Her , however I dropped the rudder last week as the tiller alignment is about 5 degs out which is a real pain at times .
The shaft and nylon bearings are tapered , there is a large nylon washer below tiller fitting , I reckon if the washer was a little thicker it may well pull the shaft up slightly and remove the free play ....  ?       Poss worth a try anyway  .
I was amazed  at how heavy  the rudder is , there  must be a lot of steel frame  inside or something .

Doug .
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Oli View Drop Down
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Post Options Post Options   Quote Oli Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jan 08 at 9:04am

Doug,

I tried the thicker washer trick last season. The real problem with this is finding a washer of the required thickness to eliminate the slack BUT without lifting the rudder to excess, which leads to the top edge binding on the bottom of the boat when helm is applied.  

You might guess that I failed in my attempt! 

IMHO Stainless steel Shimming is what is needed under the original washer, maybe only 1-1.5mm thick....

More worrying was the fact that after anti fouling the rudder blade I spotted a weep of water coming from the leading edge of the blade.....resulting in investigative dremmelling and a week of drying and remeadial filling and refairing..I must have cured it as there is no sign of any problem now.

 

 

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Some Bloke View Drop Down
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Post Options Post Options   Quote Some Bloke Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jan 08 at 8:26pm

I replaced Zulu's rudder bearings the year before last. After dropping the rudder both bearings came out fairly easily with a large hammer and a wooden drift. The upper bearing has to be pushed up from below. I measured them up and a local light engineering shop turned up copies from solid Delrin which went straight back in again without any trouble. They still have no play at all. The  whole thing cost about 40 quid.

Kev
GBR7622 Zulu
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BrianD View Drop Down
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Post Options Post Options   Quote BrianD Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jan 08 at 11:47am

Chaps

Colin Ryan at Rowan Yacht Services can provide ( and fit if necessary ) replacement rudder bearings if you can't obtain elsewhere. tel 01634 256691 mob 07885 716087.

 

Not sure I was the one that didn't reply to Chic but if so - many apologies!

rgds

Brian Douglas

Projection Yachts

Projection "the works"
7639R
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chic View Drop Down
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Post Options Post Options   Quote chic Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jan 08 at 6:18pm

Brian,

I'm glad to see that you're still monitoring the P762 thread!

Thanks for the info and phone numbers re bearings, I shall give Colin Ryan a call.

Out of curiosity (I'm sure I'm not the only one), are we going to see any baby projections in the coming months, or are they only built to order?

Regards, Chic

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BrianD View Drop Down
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Post Options Post Options   Quote BrianD Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jan 08 at 8:45am

Hi Chic

 

No orders for 762s at the moment but a new version of the 920 may appear before too long!

 

rgds

Brian

Projection "the works"
7639R
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DOUGk911 View Drop Down
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Post Options Post Options   Quote DOUGk911 Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jan 08 at 9:37am
So you can get a new 762 if you want one !  ?

errr.. price ?

News to me ,last story I heard was of possible Polish production .

I fitted a J80 pulpit last Friday , reasonably easy , 2 extra holes ,and  a little brute force to align .

Doug .


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