Re: Isometric of Micro
Many thanks for those! They answered many questions for this new owner.
Charlie
s/v Bolger Micro "For Now"
Yuma, AZ
Charlie
s/v Bolger Micro "For Now"
Yuma, AZ
--- Inbolger@yahoogroups.com, "Bruce Hallman" <bruce@...> wrote:
>
> Isometric rendering of Micro, the perfect sailboat 99% of the time.
>
>http://flickr.com/photos/hallman/2649810939/
>
> How could sail area be increased on trailer sailed Micros? Lugsails?I see that the distance between the the masts is very much the same,
> Ketch rigged??
within inches at most, on the AS19 and Micro.
http://hallman.org/bolger/AS19/as19nav.gif
So the AS19 could have the Micro Nav chinese gaff, or maybe trailer
Micro could have the AS19 gaff, couldn't they?
Graeme
Nice one Bruce.
Writing about the Micro Navigator, Bolger says Micro was long overdue
for an increase in sail area.
http://www.boatdesign.com/micro/files/navigator1.pdf
I guess that is because the Micro hull is so aerodynamically draggy:
relatively high for its length, wall sided, and no rounding. I read
somewhere that even rounding vertices by a radius of only 10% of the
frontal dimension cuts down turbulent drag by 60% or thereabouts. I
guess that if the overall aerodynamic lift/drag of Micro can't be
increased by lowering the deck height, nor by rounding the hull topside
edges, then the alternative for improving the ratio is to increase sail
area. The boat will then go much better to windward.
How could sail area be increased on trailer sailed Micros? Lugsails?
Ketch rigged??
Graeme
Writing about the Micro Navigator, Bolger says Micro was long overdue
for an increase in sail area.
http://www.boatdesign.com/micro/files/navigator1.pdf
I guess that is because the Micro hull is so aerodynamically draggy:
relatively high for its length, wall sided, and no rounding. I read
somewhere that even rounding vertices by a radius of only 10% of the
frontal dimension cuts down turbulent drag by 60% or thereabouts. I
guess that if the overall aerodynamic lift/drag of Micro can't be
increased by lowering the deck height, nor by rounding the hull topside
edges, then the alternative for improving the ratio is to increase sail
area. The boat will then go much better to windward.
How could sail area be increased on trailer sailed Micros? Lugsails?
Ketch rigged??
Graeme
--- Inbolger@yahoogroups.com, "Bruce Hallman" <bruce@...> wrote:
>
> Isometric rendering of Micro, the perfect sailboat 99% of the time.
>
>http://flickr.com/photos/hallman/2649810939/
>
Have you already drawn and uploaded an isometric of AS 29 ? I studied
your flick.com/photos/hallman..... and could not find it. I am
currently thinking to build either an AS 29 or a Jessie Cooper, both
wonderful designs.
Another question : it seems that you make these isometrics with the
"Freeship" software ? If it's true could you upload the AS29.fbm file
if it does exist, I would appreciate to download it and make a better
study of the boat on my computer.
Finally your collection of isometrics is a very nice achievement,
congratulations, jcjglt.
your flick.com/photos/hallman..... and could not find it. I am
currently thinking to build either an AS 29 or a Jessie Cooper, both
wonderful designs.
Another question : it seems that you make these isometrics with the
"Freeship" software ? If it's true could you upload the AS29.fbm file
if it does exist, I would appreciate to download it and make a better
study of the boat on my computer.
Finally your collection of isometrics is a very nice achievement,
congratulations, jcjglt.
--- Inbolger@yahoogroups.com, "Bruce Hallman" <bruce@...> wrote:
>
> Isometric rendering of Micro, the perfect sailboat 99% of the time.
>
>http://flickr.com/photos/hallman/2649810939/
>
Isometric rendering of Micro, the perfect sailboat 99% of the time.
http://flickr.com/photos/hallman/2649810939/
http://flickr.com/photos/hallman/2649810939/