Re: [bolger] Re: L. Francis Herreshoff's Rozinante

> If you break the curved hull into enough strips, I think any curved
> hull can be made developable.

The Bolger 'sea of peas' box boat is an extreme form of this,
it has three strakes. I have been exploring five, six strake boats.
A six strake boat is not that much more work to build than a
three strake boat, but is it vastly more 'curvy' to the eye!

The 'sea of peas' primarily addresses the issue of turbulence
around the hard chine. But, you cannot expect
a 'sea of peas' boat to win a contest based on surface
friction. Surface friction is such a huge issue with low
powered boats, [that is row boats], that I argue that rowboats
should be curvy.
On 11/12/05, John Bell <smallboatdesigner@...> wrote:
> For freeship to develop plates, you must check the option that a particular
> layer is developable. Not everything is, though.

I have tried it two ways, and found that Freeship does its best to
render the curvy surface into a developable shape, IOW, it flattens
the bulges into strakes when it calculates the developed shape.

If you break the curved hull into enough strips, I think any curved
hull can be made developable.

Yes, you need to learn about that checkbox in layer properties,
to get Free!Ship to plot strakes; it defaults to 'no', and to get
strakes you need 'yes'. I stumbled around a couple hours
before I figured that out!
Ah, found it, thanks!

--- Inbolger@yahoogroups.com, "John Bell" <smallboatdesigner@m...> wrote:
>
> For freeship to develop plates, you must check the option that a
particular
> layer is developable. Not everything is, though.
>
>
> ----- Original Message -----
> From: "builtaboat" <builtaboat@y...>
> To: <bolger@yahoogroups.com>
> Sent: Saturday, November 12, 2005 8:55 PM
> Subject: [bolger] Re: L. Francis Herreshoff's Rozinante
>
>
> |
> | > The Rozinante data input and model making took about two hours
total.
> |
> |
> | How did you make the model? When I opened your file in Freeship, the
> | "develope plate" isn't highlighted, and therefore won't create the
> | plates. Is there another secret? You made a nice model too!
> |
> |
> |
> |
> |
> |
> | Bolger rules!!!
> | - no cursing, flaming, trolling, spamming, respamming, or flogging
dead
> horses
> | - stay on topic, stay on thread, punctuate, no 'Ed, thanks, Fred'
posts
> | - Pls add your comments at the TOP, SIGN your posts, and snip away
> | - Plans: Mr. Philip C. Bolger, P.O. Box 1209, Gloucester, MA,
01930, Fax:
> (978) 282-1349
> | - Unsubscribe:bolger-unsubscribe@yahoogroups.com
> | - Open discussion:bolger_coffee_lounge-subscribe@yahoogroups.com
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>
For freeship to develop plates, you must check the option that a particular
layer is developable. Not everything is, though.


----- Original Message -----
From: "builtaboat" <builtaboat@...>
To: <bolger@yahoogroups.com>
Sent: Saturday, November 12, 2005 8:55 PM
Subject: [bolger] Re: L. Francis Herreshoff's Rozinante


|
| > The Rozinante data input and model making took about two hours total.
|
|
| How did you make the model? When I opened your file in Freeship, the
| "develope plate" isn't highlighted, and therefore won't create the
| plates. Is there another secret? You made a nice model too!
|
|
|
|
|
|
| Bolger rules!!!
| - no cursing, flaming, trolling, spamming, respamming, or flogging dead
horses
| - stay on topic, stay on thread, punctuate, no 'Ed, thanks, Fred' posts
| - Pls add your comments at the TOP, SIGN your posts, and snip away
| - Plans: Mr. Philip C. Bolger, P.O. Box 1209, Gloucester, MA, 01930, Fax:
(978) 282-1349
| - Unsubscribe:bolger-unsubscribe@yahoogroups.com
| - Open discussion:bolger_coffee_lounge-subscribe@yahoogroups.com
| Yahoo! Groups Links
|
|
|
|
|
|
> I recognize that we're all amateurs here, but the .fbm Rozinante mock-
> up is very far from the original design. Evidently the data entry was
> not the published table of offsets.
>
> -Peter Belenky

I admit to being amateur, and even to being sloppy, though
the data did come from page 73 of Herreshoff's book _Sensible
Cruising Designs_ where he gives the table of offsets.
I would guess that it is accurate to within few inches at scale.
> The Rozinante data input and model making took about two hours total.


How did you make the model? When I opened your file in Freeship, the
"develope plate" isn't highlighted, and therefore won't create the
plates. Is there another secret? You made a nice model too!
--- Inbolger@yahoogroups.com, Bruce Hallman <bruce@h...> wrote:
> The Rozinante data input and model making took about two hours total.
>

I recognize that we're all amateurs here, but the .fbm Rozinante mock-
up is very far from the original design. Evidently the data entry was
not the published table of offsets.

-Peter Belenky
> From this I gather that you are now delving into Free Ship. How long
> did it take you to get to this point

FreeShip is more powerful, and correspondingly more complex
that Hulls.exe, but it a great program! I started looking at it
three days ago, and read the manual twice through carefully
to learn how to run the program. [Plus a bit of stumbling around.]

The Rozinante data input and model making took about two hours total.
Bruce

From this I gather that you are now delving into Free Ship. How long
did it take you to get to this point and I gather it printed out the
strakes for you in the same way Hulls does?

HJ

Bruce Hallman wrote:

>http://community.webshots.com/album/502308228tbHVlm
>http://hallman.org/herreshoff/rozinante/Rozinante.jpg
>http://hallman.org/herreshoff/rozinante/
>
>A little off topic, L. Francis Herreshoff's Rozinante, modeled in Free!Ship
>
>It really is on topic when you considered what Phil Bolger has written
>about Rozinante, especially in the chapter he wrote on Burgundy.
>
>
>
>Bolger rules!!!
>- no cursing, flaming, trolling, spamming, respamming, or flogging dead horses
>- stay on topic, stay on thread, punctuate, no 'Ed, thanks, Fred' posts
>- Pls add your comments at the TOP, SIGN your posts, and snip away
>- Plans: Mr. Philip C. Bolger, P.O. Box 1209, Gloucester, MA, 01930, Fax: (978) 282-1349
>- Unsubscribe:bolger-unsubscribe@yahoogroups.com
>- Open discussion:bolger_coffee_lounge-subscribe@yahoogroups.com
>Yahoo! Groups Links
>
>
>
>
>
>
>
>
>
http://community.webshots.com/album/502308228tbHVlm
http://hallman.org/herreshoff/rozinante/Rozinante.jpg
http://hallman.org/herreshoff/rozinante/

A little off topic, L. Francis Herreshoff's Rozinante, modeled in Free!Ship

It really is on topic when you considered what Phil Bolger has written
about Rozinante, especially in the chapter he wrote on Burgundy.