Re: Twin Bilge Keels on Brick?
That's a lot less than the 5% of sail area that's said to be best. And an entire world
away from 3 foot draft.
Glad it works for you.
Maybe it's worth it to recall Philip Bolger's note that the more undercanvassed the boat,
the larger the leeboard needs to be; not the other way around.
Mark
pauldayau wrote:
away from 3 foot draft.
Glad it works for you.
Maybe it's worth it to recall Philip Bolger's note that the more undercanvassed the boat,
the larger the leeboard needs to be; not the other way around.
Mark
pauldayau wrote:
> > Those keels are 4" deep by 2' long . I am in the process of cutting
> them back to 1 3/4" as the recent rains have given us some big
> shallow lakes. The offcuts will be glued back on to lenghten the
> keels. the important thing when sailing is not to stall on your
> tacksas you tend to just drift sideways. we once out tacked a Mirror
> by heeling the boat almost to the waterline, whilst they were all
> hanging out the sides. beaching under sail is fun when you dont have
> toto stop and pull anything up.
> Go for it
> cheers Paul, sailing once again on the EPHEMERALlakes of Kalgoorlie.
> Its still not deepenough for the schooner
--- Inbolger@yahoogroups.com, Mark <marka@h...> wrote:
BAY&.src=gr&.dnm=old+wreck++restored.jpg&.view=t&.done=http%
3a//photos.groups.yahoo.com/group/bolger/lst%3f%26.dir=/june%2bbug%
2bBOTANY%2bBAY%26.src=gr%26.view=t
shallow lakes. The offcuts will be glued back on to lenghten the
keels. the important thing when sailing is not to stall on your
tacksas you tend to just drift sideways. we once out tacked a Mirror
by heeling the boat almost to the waterline, whilst they were all
hanging out the sides. beaching under sail is fun when you dont have
toto stop and pull anything up.
Go for it
cheers Paul, sailing once again on the EPHEMERALlakes of Kalgoorlie.
Its still not deepenough for the schooner
>http://photos.groups.yahoo.com/group/bolger/vwp?.dir=/june+bug+BOTANY+
BAY&.src=gr&.dnm=old+wreck++restored.jpg&.view=t&.done=http%
3a//photos.groups.yahoo.com/group/bolger/lst%3f%26.dir=/june%2bbug%
2bBOTANY%2bBAY%26.src=gr%26.view=t
>better in the shallows for
> Near the bottom of the Bolger photos. Worth a look. Will work
> the longer boat.them back to 1 3/4" as the recent rains have given us some big
> Mark
>
> Those keels are 4" deep by 2' long . I am in the process of cutting
shallow lakes. The offcuts will be glued back on to lenghten the
keels. the important thing when sailing is not to stall on your
tacksas you tend to just drift sideways. we once out tacked a Mirror
by heeling the boat almost to the waterline, whilst they were all
hanging out the sides. beaching under sail is fun when you dont have
toto stop and pull anything up.
Go for it
cheers Paul, sailing once again on the EPHEMERALlakes of Kalgoorlie.
Its still not deepenough for the schooner
http://photos.groups.yahoo.com/group/bolger/vwp?.dir=/june+bug+BOTANY+BAY&.src=gr&.dnm=old+wreck++restored.jpg&.view=t&.done=http%3a//photos.groups.yahoo.com/group/bolger/lst%3f%26.dir=/june%2bbug%2bBOTANY%2bBAY%26.src=gr%26.view=t
Near the bottom of the Bolger photos. Worth a look. Will work better in the shallows for
the longer boat.
Mark
Near the bottom of the Bolger photos. Worth a look. Will work better in the shallows for
the longer boat.
Mark
> On the basis of that, my guess is that whatever you try will work
> well enough not to be a complete failure.
>
> YIBB,
>
> David
Dave-
I've built a couple of bricks and a pdracer and found that if you
sit on the leeward side and make the boat heel a little more than
normal she does ok with the leeboard up. Maybe you could try some
chine runners like on matt layden's paradox. They would be easier to
build and since you are'nt trying to make the brick self righting
with ballasted leeboards...the chine runners might be a good idea.
It would keep the draft shallow and the wear and tear would'nt be
such a big problem with repeated groundings and beachings. Not sure
the brick may have a bit to much rocker to make it work
well.....however the pd has less rocker and i could see it working
there. The pd can't haul as much weight as a brick but it is a bit
more steady, faster than the brick and more comfortable to sleep in
due to the reduced rocker. You can get the side panel offsets from
pdracer.com the rest is open to interpratation.....you could build
it just like bolger receomends on his plans or follow some
suggestions on the pd site. It's hard to screw up such a simple
project and i think the chine runners would be real neat. If the
runners did'nt work as well as you'd like it would only take an hour
to cut them off and re paint the thing.
jason
I've built a couple of bricks and a pdracer and found that if you
sit on the leeward side and make the boat heel a little more than
normal she does ok with the leeboard up. Maybe you could try some
chine runners like on matt layden's paradox. They would be easier to
build and since you are'nt trying to make the brick self righting
with ballasted leeboards...the chine runners might be a good idea.
It would keep the draft shallow and the wear and tear would'nt be
such a big problem with repeated groundings and beachings. Not sure
the brick may have a bit to much rocker to make it work
well.....however the pd has less rocker and i could see it working
there. The pd can't haul as much weight as a brick but it is a bit
more steady, faster than the brick and more comfortable to sleep in
due to the reduced rocker. You can get the side panel offsets from
pdracer.com the rest is open to interpratation.....you could build
it just like bolger receomends on his plans or follow some
suggestions on the pd site. It's hard to screw up such a simple
project and i think the chine runners would be real neat. If the
runners did'nt work as well as you'd like it would only take an hour
to cut them off and re paint the thing.
jason
Don't know if this will help, but a couple of Summer's back My
bother-in-law and I snapped the leeboard off my Teal while driving
her too hard. The wind was gusting into the 20s and I thought for
sure we were going to end up at the far side of the lake. What I
found was that if I let her heel down a little more than how I would
normally sail, the chine would bite into the water enough that I
could make good enough progess to windward. So good, in fact, that I
didn't get around to building a replacement leeboard for a few years.
On the basis of that, my guess is that whatever you try will work
well enough not to be a complete failure.
YIBB,
David
C.E.P.
415 W.46th Street
New York, New York 10036
http://www.crumblingempire.com
Mobile (646) 325-8325
Office (212) 247-0296
bother-in-law and I snapped the leeboard off my Teal while driving
her too hard. The wind was gusting into the 20s and I thought for
sure we were going to end up at the far side of the lake. What I
found was that if I let her heel down a little more than how I would
normally sail, the chine would bite into the water enough that I
could make good enough progess to windward. So good, in fact, that I
didn't get around to building a replacement leeboard for a few years.
On the basis of that, my guess is that whatever you try will work
well enough not to be a complete failure.
YIBB,
David
>Greetings All,--
>I started building my Brick this afternoon and I was wondering if
>anyone has tried twin Bilge Keels on this boat? If so How high, How
>Long, How thick??The Lakes here in central Colorado that I would be
>sailing in are not too deep.
C.E.P.
415 W.46th Street
New York, New York 10036
http://www.crumblingempire.com
Mobile (646) 325-8325
Office (212) 247-0296
David,
This intrigued me 'cause I'm realizing how unbalanced my own in progress Brick will be
using a pivoting leeboard pivoted part way up. My skids are built up to an inch and a
half, which looks pretty substantial, so I'm hoping to get a little help to windward with
them in the shallows.
The design shows about 3.5 square feet. If the middle 3' of the boat had one or a pair of
fixed keels a foot below the bottom to equal that, the draft would be about 16". That
strikes me as quite deep for the edges of the nearby, local, shallow lake. Stretched out
to the maximum five feet gets the draft down to a foot. Half inch thick is just about the minimum.
High aspect boards are more effective than are shorter ones. How much longer a shoal
version has to be to compensate I cannot say. The similar PD Racers are reported to work
-sort of- without any foil at all on account of the slab sides. So whatever you can add
will be improvement.
An option Bolger uses often is a roped on, Dutch shaped board. The wide, round bottom gets
some extra area without going so deep. These don't appear to shift the balance so far aft
as rectangular boards do retracted.
Best of fun,
Mark
David Alan wrote:
This intrigued me 'cause I'm realizing how unbalanced my own in progress Brick will be
using a pivoting leeboard pivoted part way up. My skids are built up to an inch and a
half, which looks pretty substantial, so I'm hoping to get a little help to windward with
them in the shallows.
The design shows about 3.5 square feet. If the middle 3' of the boat had one or a pair of
fixed keels a foot below the bottom to equal that, the draft would be about 16". That
strikes me as quite deep for the edges of the nearby, local, shallow lake. Stretched out
to the maximum five feet gets the draft down to a foot. Half inch thick is just about the minimum.
High aspect boards are more effective than are shorter ones. How much longer a shoal
version has to be to compensate I cannot say. The similar PD Racers are reported to work
-sort of- without any foil at all on account of the slab sides. So whatever you can add
will be improvement.
An option Bolger uses often is a roped on, Dutch shaped board. The wide, round bottom gets
some extra area without going so deep. These don't appear to shift the balance so far aft
as rectangular boards do retracted.
Best of fun,
Mark
David Alan wrote:
>
> Greetings All,
> I started building my Brick this afternoon and I was wondering if anyone has tried twin Bilge Keels on this boat? If so How high, How Long, How thick??The Lakes here in central Colorado that I would be sailing in are not too deep.
>
> Thank You,
> Dave Blow
> smallshelterss
Greetings All,
I started building my Brick this afternoon and I was wondering if anyone has tried twin Bilge Keels on this boat? If so How high, How Long, How thick??The Lakes here in central Colorado that I would be sailing in are not too deep.
Thank You,
Dave Blow
smallshelters
---------------------------------------------
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I started building my Brick this afternoon and I was wondering if anyone has tried twin Bilge Keels on this boat? If so How high, How Long, How thick??The Lakes here in central Colorado that I would be sailing in are not too deep.
Thank You,
Dave Blow
smallshelters
---------------------------------------------
This e-mail was sent using a CentralPets WebMail account
Get yours at:http://mail.centralpets.com