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Showing results 1 to 25 of 70
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Search: Posts Made By: bobperry
Forum: Boat Review and Purchase Forum 1 Week Ago
Replies: 31
Views: 1,363
Posted By bobperry
Re: My teenage design efforts

Paikea:
If you are talking about a "normal", ballasted 30' keel boat with reasonably healthy design characteristics it would take a real pro to "capsize " it in anything short of a full gale with...
Forum: Boat Review and Purchase Forum 1 Week Ago
Replies: 31
Views: 1,363
Posted By bobperry
My teenage design efforts

I ran across an old tube of drawings marked "historic 1" in my archives. It contained some drawings I did between the age of 16 and 20. It was a very weird feeling to look at the old drawings and...
Forum: Boat Review and Purchase Forum 07-11-2014
Replies: 5,316
Views: 369,315
Posted By bobperry
Re: Pros and cons of steel sailboats

When I designed FRANCIS I had in mind a nice, all round, good mannered vessel that would perform well in all conditions. If I had thought that in our typical tide rip/chop there would have been some...
Forum: Boat Review and Purchase Forum 07-10-2014
Replies: 5,316
Views: 369,315
Posted By bobperry
Re: Pros and cons of steel sailboats

We could easily double the tankage on FRANCIS. There is lots of vacant volume in the boat. We don't need to weld a vice to the deck. There is not much need for welding on Frankie.

I chose SPRAY...
Forum: General Discussion (sailing related) 04-29-2014
Replies: 65
Views: 4,025
Posted By bobperry
Re: Something about the fractional rig that I just don't get...

Med:
I just can't do it. It would take a book to carefully go over all the varaiables here. I think it's a mistake to divide the the subject into two groups, i.e. masthead and fractional. There are...
Forum: Cruising and Sailing with Children 04-04-2014
Replies: 24
Views: 1,652
Posted By bobperry
Re: Baby seat in cockpit

Do not put a baby seal in your cockpit.
The mother seal leaves the pup on the beach so she can go hunting. The mother will come back and retrieve the pup later.
Leave the baby seal on the beach.
...
Forum: Boat Review and Purchase Forum 03-30-2014
Replies: 5,316
Views: 369,315
Posted By bobperry
Re: Pros and cons of steel sailboats

Shank:
Congrats on the new boat. Sounds like life will be good.
Forum: Sailboat Design and Construction 03-22-2014
Replies: 49
Views: 8,122
Posted By bobperry
Re: Limit of Positive Stability (LPS)

Jack:
We are all learning here. Can't see a day coming when I won't learn something. I applaud you for diving head first into the deep subject of stability.
Forum: General Discussion (sailing related) 03-13-2014
Replies: 2
Views: 378
Posted By bobperry
Re: Sailing Mentors: Perry

PJ:
You are running the risk of ruining my reputation around here.

But thank you.
Forum: General Discussion (sailing related) 03-06-2014
Replies: 174
Views: 6,195
Posted By bobperry
Re: full battens for a monohull cruiser?

It depends on the level of performance you are happy with. I do not subscribe to the idea that "this works for everyone".

I would never want a main without battens. I care about sail shape. But...
Forum: Gear & Maintenance 02-28-2014
Replies: 6
Views: 504
Posted By bobperry
Re: Moving the mast on an I-28?

1" will make no difference in anything so long as the steel pad beneath it is still taking the load.
Forum: Boat Review and Purchase Forum 02-27-2014
Replies: 7
Views: 1,112
Posted By bobperry
Re: Golden Gate 30

Not all NA's are as arrogant and cranky as I am. I think they like to be called and recognized for their contributions to the sport. I had no doubt that Chuck would be happy to talk to you.
Forum: Boat Review and Purchase Forum 02-23-2014
Replies: 7
Views: 1,112
Posted By bobperry
Re: Golden Gate 30

If memory serves those are all Chuck Burns designs. Chuck worked for Gary Mull before going on his own. Chuck is a very good designer. Why don't you give him a call and ask him about the boats. He's...
Forum: General Discussion (sailing related) 02-07-2014
Replies: 11
Views: 711
Posted By bobperry
Re: rudder rake

I try to get my rudders as far aft as practical and l like to keep the rudder stock perpendicuar with the hull profile in the way of the rudder. I am working with a rudder foil I know and I would...
Forum: General Discussion (sailing related) 02-07-2014
Replies: 145
Views: 8,308
Posted By bobperry
Re: Low vs. high freeboard - benefits and drawbacks

Jon:
No I won't take that into consideration. Too nebulous and can't be applied with any guaranteed consistancy. I'll just assume we are talking about boats loaded as most mom and pop boats are...
Forum: General Discussion (sailing related) 02-06-2014
Replies: 145
Views: 8,308
Posted By bobperry
Re: Low vs. high freeboard - benefits and drawbacks

411
It doesn't matter what scale you use. You just need some "units".
They don't have to relate to any real scale. They have to relate to each other.

So,,,,you have a drawing of a boat. Take out...
Forum: General Discussion (sailing related) 02-06-2014
Replies: 145
Views: 8,308
Posted By bobperry
Re: Low vs. high freeboard - benefits and drawbacks

OK Team I have some results:

EAGLE 54, Hoek design long, low and lean freeboard 7.3% of LOA
REDLINE 41 Mark Mills IRC racer freeboard 11% of LOA...
Forum: Boat Review and Purchase Forum 02-05-2014
Replies: 6,754
Views: 1,681,864
Posted By bobperry
Re: Interesting Sailboats

Pelican:
Nope I would not design a IMOCA boat with or without chines. I'm comfy here in my beach shack and I don't need the money that badly. But the real reason I would not take that job for any...
Forum: Boat Review and Purchase Forum 02-04-2014
Replies: 6,754
Views: 1,681,864
Posted By bobperry
Re: Interesting Sailboats

If you want to see a very successful narow boat with chines you should check out RAGTIME, a Spencer design. This boat is a downwind rocket and has been winning for about 35 years.

I'll leave it to...
Forum: Learning to Sail 02-02-2014
Replies: 31
Views: 2,551
Posted By bobperry
Re: Closer to the wind question

I use 40% of luff length up from tack through the clew for my sheet location. I start there.
I like to have my genny "kissing" the spreader tip when beating. Just gently bouncing off and on the...
Forum: Boat Review and Purchase Forum 01-31-2014
Replies: 5,316
Views: 369,315
Posted By bobperry
Re: Pros and cons of steel sailboats

mstern:
You pretty much nailed it:

Yes, in this case that is exactly what we did. I started a weight study and used calculations and wild ass guesses. At the time we didn't even know what...
Forum: Boat Reviews 01-28-2014
Replies: 37
Views: 2,326
Posted By bobperry
Re: Islander Freeport 36

For the record I am an old looking really nice guy. I may come off being rude and arrogant but that just because I am rude and arrogant. Underneath that facade you will find a nice, old rude and...
Forum: Gear & Maintenance 01-11-2014
Replies: 9
Views: 713
Posted By bobperry
Re: What is this large bronze part?

That's what I am thinking too. That strap went down the stem inside the boat. Maybe glassed in place maybe through bolted. The other piece needs to be drilled for headstay and jib tack shackle.
...
Forum: Boat Review and Purchase Forum 01-11-2014
Replies: 5,316
Views: 369,315
Posted By bobperry
Re: Pros and cons of steel sailboats

Jon:
VPP table and polars for Frankie sent vie email.
Forum: Boat Review and Purchase Forum 01-02-2014
Replies: 11
Views: 1,444
Posted By bobperry
Re: Bill Healy wooden boat

Check the IDEAL Series of books put out by MOTOR BOATING and SAILING back in the 50's. They have full sets of plans for almost all of Atkins designs. I'm sure LITTLE MIAD is in there but I can;t tell...
Showing results 1 to 25 of 70

 

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