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  #3131  
Old 01-10-2014
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Re: Pros and cons of steel sailboats

Ok a couple of things:
In no order.

Yes we did full VPP analysis of the hull very early on in the design stage. We were very intersted in variations of stablity and keel designs. If you PM me I can propvide you with the VPP's.

Jon is correct. Exhaust lead to both sides.There is no such thing as "back pressure" problems when you are dealing with small marine diesel egines. It's a myth. We have a unique situation in the Sliver due to the engine being in it's own compoartment anbd noithing gloing on each side of it. The client liked the "Nor'sea" exhaust system and so we went with it. It is elegant and should work very well. I look forward to seeing exactly how it works, i.e. where does the cooling water go? Always to the low side? We'll just have to see.

Jeff:
Yep, with that little beam I had to do something toi provide stability. Thankfully in the PNW draft is not an issue.
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  #3132  
Old 01-10-2014
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Re: Pros and cons of steel sailboats

Thanks, Bob and Jeff.. Lots of conversation over there about the exhaust taking place more or less at the same time.

No need to duplicate it here.

Although SA is frequently not safe for work.
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  #3133  
Old 01-10-2014
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Re: Pros and cons of steel sailboats

Hey... if I play around with the resolution of my monitor I can almost make my boat look that sleek!!
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  #3134  
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Re: Pros and cons of steel sailboats



I see her mizzen has now been upgraded to carbon...

Looks like it was stolen from my friend's 1D35 which is also at CSR...
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  #3135  
Old 01-10-2014
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Re: Pros and cons of steel sailboats

"Although SA is frequently not safe for work. "

Hey! watch it! I resemble that remark.

I just got an email from the owner. Too windy today to put up the rig.
Shitski!
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Re: Pros and cons of steel sailboats

Bob is occasionally not safe for work...
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Re: Pros and cons of steel sailboats

It just struck me - Kim is of an age to remember putting "duals" (two exhaust pipes) on a car for more performance.

He's just doing the same with Sliver.
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Re: Pros and cons of steel sailboats

Quote:
Originally Posted by SloopJonB View Post
It just struck me - Kim is of an age to remember putting "duals" (two exhaust pipes) on a car for more performance.

He's just doing the same with Sliver.
I am still waiting until he mounts a set of raised white letter Polyglas's and patches out for the first time.
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  #3139  
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Re: Pros and cons of steel sailboats

"I am still waiting until he mounts a set of raised white letter Polyglas's and patches out for the first time. "

Me too Jeff.

When I was a kid I had a '48 Chev coupe. My mother bought it from her friend for $20 and gave it to me. The friend was moving and had to get rid of the car. I loved that car. Straight 6 and and engine where you could actually tell what the pieces were.

I went to show it to my friend in the next town. When I left I wanted to show off. So I backed out of his driveway, paused then floored it. Unfortnately I was still in reverse. I flew backwards up into his neighbor's yard ending up smack in the middle of his lawn after bending over several lawn sprinkler heads. It became a lesson in plumbing for me.
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Old 01-10-2014
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Re: Pros and cons of steel sailboats

Quote:
Originally Posted by bobperry View Post
Ok a couple of things:
In no order.

Yes we did full VPP analysis of the hull very early on in the design stage. We were very intersted in variations of stablity and keel designs. If you PM me I can propvide you with the VPP's.

Jon is correct. Exhaust lead to both sides.There is no such thing as "back pressure" problems when you are dealing with small marine diesel egines. It's a myth. We have a unique situation in the Sliver due to the engine being in it's own compoartment anbd noithing gloing on each side of it. The client liked the "Nor'sea" exhaust system and so we went with it. It is elegant and should work very well. I look forward to seeing exactly how it works, i.e. where does the cooling water go? Always to the low side? We'll just have to see.

Jeff:
Yep, with that little beam I had to do something toi provide stability. Thankfully in the PNW draft is not an issue.
A diesel mechanic told me you can go down 3 ft underwater with a dry exhaust without getting too much back pressure . I hear Europeans often run their exhaust pipes well underwater for silencing . Some friends have done it for years with no problem. You can get drumming on a steel hull if you don't run it thru a hard point, like a chine , etc.
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