Posted by hopalongsail (hopalongsail@…>)
considering central america next year. any suggestions for info on how
our boats (read masts) do in a lightening strike? Thanks
Posted by Paul McFadden (pwhitmac@…>)
My mast has a sticker on it from the factory warning of the mast’s electrical conductivity. If I were you I’d protect your boat just like you would if it had a metal stick. PWMhopalongsail <hopalongsail@…> wrote: considering central america next year. any suggestions for info on how our boats (read masts) do in a lightening strike? Thanks
Yahoo! Music Unlimited - Access over 1 million songs. Try it free.
Posted by Sward (swardfullsail@…>)
What is the hull speed of the Freedom 32, shoal draft, fin keel-fully loaded?Paul McFadden <pwhitmac@…> wrote: My mast has a sticker on it from the factory warning of the mast’s electrical conductivity. If I were you I’d protect your boat just like you would if it had a metal stick. PWMhopalongsail <hopalongsail@…> wrote: considering central america next year. any suggestions for info on how our boats (read masts) do in a lightening strike? Thanks Yahoo! Music Unlimited - Access over 1
million songs. Try it free.
Posted by walestom (twales@…>)
The theoretical hull speed is determined by the formula: 1.34XLWL1/2
which in the case of the freedom 32 is 6.8 kts. I don’t believe the
shallow draft will impact hull speed. Fully loaded will and your
boatspeed will be dependant upon how hard you want to push the boat in
windy conditions. Reaching with main and jib in +15K winds I get up to
hull speed pretty easily.
TW Anoush Koon '84 #20
– In freedomyachts2003@yahoogroups.com, Sward <swardfullsail@y…> wrote:
What is the hull speed of the Freedom 32, shoal draft, fin
keel-fully loaded?Paul McFadden <pwhitmac@y…> wrote: My mast has a sticker on it
from the factory warning of the mast’s electrical conductivity. If I
were you I’d protect your boat just like you would if it had a metal
stick.
PWMhopalongsail <hopalongsail@y…> wrote:
considering central america next year. any suggestions for info on
how
our boats (read masts) do in a lightening strike? Thanks
Yahoo! Music Unlimited - Access over 1 million songs. Try it free.
SPONSORED LINKS
Sailing schools Sailing instruction Sailing lesson
Sailing course Sailing adventure Sailing
YAHOO! GROUPS LINKS
Visit your group "freedomyachts2003" on the web. To unsubscribe from this group, send an email to:freedomyachts2003-unsubscribe@yahoogroups.com
Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.
Posted by lance_ryley (lance_ryley@…>)
I just finished reading Don Casey’s boat electrics book, and he has
some great thoughts on mast grounding for lightning strikes,
including the necessity for a LOT more protection if your boat is in
fresh water. However, his methods all involve bolting a conductor to
the bottom of the mast and attaching to keel bolts or a grounding
plate (fwiw, he says not to use a sintered bronze radio grounding
plate as it will most likely explode). On an aluminum mast, I can
see this. On a carbon fiber mast… well… I know it’s a conductor,
but I don’t see bolting a big cable to the bottom of my mast. First,
you’d have to remove the putty or awlgrip or whatever your coating
is just to get to the carbon ‘conductor,’ and then you’d have to
drill and tap the base of the mast to make a good connection. I’d be
afraid of disturbing the carbon fibers in the process.
Another alternative, I guess, would be what he suggests for a wooden
mast, which is to put a pointed lightning rod at the top of the mast
and 8 gauge wire to the grounding point. I’m guessing you’d run the
wire inside a carbon mast, but that seems like a lot of weight aloft.
Lastly, for us cat-ketchers, I’m curious about the ‘cone of
protection’ and how it relates to the split rig.
All of these questions I’ve posted to Don, and when/if he answers,
I’ll post his responses here.
Lance
— In freedomyachts2003@yahoogroups.com, Paul McFadden
<pwhitmac@y…> wrote:
My mast has a sticker on it from the factory warning of the mast’s
electrical conductivity. If I were you I’d protect your boat just
like you would if it had a metal stick.
PWMhopalongsail <hopalongsail@y…> wrote:
considering central america next year. any suggestions for info
on how
our boats (read masts) do in a lightening strike? ThanksSPONSORED LINKS
Sailing schools Sailing instruction Sailing lesson
Sailing course Sailing adventure Sailing
YAHOO! GROUPS LINKS
Visit your group "freedomyachts2003" on the web. To unsubscribe from this group, send an email to:freedomyachts2003-unsubscribe@yahoogroups.com
Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.
Yahoo! Music Unlimited - Access over 1 million songs. Try it free.
Posted by Paul McFadden (pwhitmac@…>)
Interesting to consider what a solid strike might do to a carbon fibre mast. I don’t think I’ve ever read of an account involving one. I think though that if I was really concerned with lightning strikes on my 32, I’d probably rig a lightning rod at the masthead like a “pig stick” for flags on the old boats. I would then probably run a #4 bare wire from the “stick” down to the rail, and over the side into the water. personally, I would NEVER run anything down the inside of the mast due to the resultant damage potential to the mast if, by some slim chance I did experience a direct strike. Plus I expect that you’d stand a good chance of having a hole blown in the bottom of your boat, what with lighting’s proclivity to travel via the most direct route possible. That being said, I took one of my previous boats, which was steel with a very tall aluminum mast, from WA. down thru the canal and eventually up to FL. I must have been in 50 or 60
lighting storms/squalls during the trip with nary a hit. So even tho it’s a scary thought, the chances of it happening are pretty slim. Again, that being said… PWMlance_ryley <lance_ryley@…> wrote: I just finished reading Don Casey’s boat electrics book, and he has some great thoughts on mast grounding for lightning strikes, including the necessity for a LOT more protection if your boat is in fresh water. However, his methods all involve bolting a conductor to the bottom of the mast and attaching to keel bolts or a grounding plate (fwiw, he says not to use a sintered bronze radio grounding plate as it will most likely explode). On an aluminum mast, I can see this. On a carbon fiber mast… well… I know it’s a conductor, but I don’t see bolting a big cable
to the bottom of my mast. First, you’d have to remove the putty or awlgrip or whatever your coating is just to get to the carbon ‘conductor,’ and then you’d have to drill and tap the base of the mast to make a good connection. I’d be afraid of disturbing the carbon fibers in the process.Another alternative, I guess, would be what he suggests for a wooden mast, which is to put a pointed lightning rod at the top of the mast and 8 gauge wire to the grounding point. I’m guessing you’d run the wire inside a carbon mast, but that seems like a lot of weight aloft.Lastly, for us cat-ketchers, I’m curious about the ‘cone of protection’ and how it relates to the split rig.All of these questions I’ve posted to Don, and when/if he answers, I’ll post his responses here.Lance— In freedomyachts2003@yahoogroups.com, Paul McFadden <pwhitmac@y…> wrote:>> My mast has a sticker on it from the factory
warning of the mast’s electrical conductivity. If I were you I’d protect your boat just like you would if it had a metal stick.> PWM> > hopalongsail <hopalongsail@y…> wrote:> considering central america next year. any suggestions for info on how > our boats (read masts) do in a lightening strike? Thanks> > > > > > SPONSORED LINKS > Sailing schools Sailing instruction Sailing lesson Sailing course Sailing adventure Sailing > > ---------------------------------> YAHOO! GROUPS LINKS > > > Visit your group “freedomyachts2003” on the web.> > To
unsubscribe from this group, send an email to:> freedomyachts2003-unsubscribe@yahoogroups.com> > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. > > > ---------------------------------> > > > > > > ---------------------------------> Yahoo! Music Unlimited - Access over 1 million songs. Try it free.>
Yahoo! DSL Something to write home about. Just $16.99/mo. or less
Posted by Sward (swardfullsail@…>)
Thank you. Tomorrow, 2 crew members and myself are leaving New Bern, NC heading to Marathon, FL on the outside, not in the ICW. Really looking forward to it. Swardwalestom <twales@…> wrote: The theoretical hull speed is determined by the formula: 1.34XLWL1/2 which in the case of the freedom 32 is 6.8 kts. I don’t believe the shallow draft will impact hull speed. Fully loaded will and your boatspeed will be dependant upon how hard you want to push the boat in windy conditions. Reaching with main and jib in +15K winds I get up to hull speed pretty easily. TW Anoush Koon '84 #20 – In freedomyachts2003@yahoogroups.com, Sward <swardfullsail@y…> wrote: > > What is the hull
speed of the Freedom 32, shoal draft, fin keel-fully loaded? > > Paul McFadden <pwhitmac@y…> wrote: My mast has a sticker on it from the factory warning of the mast’s electrical conductivity. If I were you I’d protect your boat just like you would if it had a metal stick. > PWM > > hopalongsail <hopalongsail@y…> wrote: > considering central america next year. any suggestions for info on how > our boats (read masts) do in a lightening strike? Thanks > > > > > > > --------------------------------- > Yahoo! Music Unlimited - Access over 1 million songs. Try it free. > > SPONSORED LINKS > Sailing schools Sailing instruction
Sailing lesson Sailing course Sailing adventure Sailing > > --------------------------------- > YAHOO! GROUPS LINKS > > > Visit your group “freedomyachts2003” on the web. > > To unsubscribe from this group, send an email to: > freedomyachts2003-unsubscribe@yahoogroups.com > > Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. > > > --------------------------------- >
Posted by lance_ryley (lance_ryley@…>)
Sward,
Bright Star spent several years in New Bern… have a great trip!
Lance
— In freedomyachts2003@yahoogroups.com, Sward <swardfullsail@y…>
wrote:
Thank you.
Tomorrow, 2 crew members and myself are leaving New Bern, NC
heading to Marathon, FL on the outside, not in the ICW. Really
looking forward to it.Sward
walestom <twales@a…> wrote: The theoretical hull speed
is determined by the formula: 1.34XLWL1/2
which in the case of the freedom 32 is 6.8 kts. I don’t believe
the
shallow draft will impact hull speed. Fully loaded will and your
boatspeed will be dependant upon how hard you want to push the
boat in
windy conditions. Reaching with main and jib in +15K winds I get
up to
hull speed pretty easily.
TW Anoush Koon '84 #20– In freedomyachts2003@yahoogroups.com, Sward
<swardfullsail@y…> wrote:What is the hull speed of the Freedom 32, shoal draft, fin
keel-fully loaded?Paul McFadden <pwhitmac@y…> wrote: My mast has a sticker
on it
from the factory warning of the mast’s electrical conductivity.
If I
were you I’d protect your boat just like you would if it had a
metal
stick.
PWMhopalongsail <hopalongsail@y…> wrote:
considering central america next year. any suggestions for
info on
how
our boats (read masts) do in a lightening strike? Thanks
Yahoo! Music Unlimited - Access over 1 million songs. Try it
free.SPONSORED LINKS
Sailing schools Sailing instruction Sailing
lesson
Sailing course Sailing adventure Sailing
YAHOO! GROUPS LINKS
Visit your group "freedomyachts2003" on the web. To unsubscribe from this group, send an email to:freedomyachts2003-unsubscribe@yahoogroups.com
Your use of Yahoo! Groups is subject to the Yahoo! Terms ofService.
SPONSORED LINKS Sailing
schools Sailing
instruction Sailing
lesson
Sailing course
Sailing adventure
Sailing
YAHOO! GROUPS LINKS Visit your group "freedomyachts2003" on the web. To unsubscribe from this group, send an email to:freedomyachts2003-unsubscribe@yahoogroups.com
Your use of Yahoo! Groups is subject to the Yahoo! Terms of
Service.
Posted by lance_ryley (lance_ryley@…>)
I think for clarity, you meant 1.34 * SquareRoot(LWL)…
Lance
— In freedomyachts2003@yahoogroups.com, “walestom” <twales@a…>
wrote:
The theoretical hull speed is determined by the formula:
1.34XLWL1/2
which in the case of the freedom 32 is 6.8 kts. I don’t believe
the
shallow draft will impact hull speed. Fully loaded will and your
boatspeed will be dependant upon how hard you want to push the
boat in
windy conditions. Reaching with main and jib in +15K winds I get
up to
hull speed pretty easily.
TW Anoush Koon '84 #20– In freedomyachts2003@yahoogroups.com, Sward
<swardfullsail@y…> wrote:What is the hull speed of the Freedom 32, shoal draft, fin
keel-fully loaded?Paul McFadden <pwhitmac@y…> wrote: My mast has a sticker on
it
from the factory warning of the mast’s electrical conductivity. If
I
were you I’d protect your boat just like you would if it had a
metal
stick.
PWMhopalongsail <hopalongsail@y…> wrote:
considering central america next year. any suggestions for
info on
how
our boats (read masts) do in a lightening strike? Thanks
Yahoo! Music Unlimited - Access over 1 million songs. Try it
free.SPONSORED LINKS
Sailing schools Sailing instruction Sailing
lesson
Sailing course Sailing adventure Sailing
YAHOO! GROUPS LINKS
Visit your group "freedomyachts2003" on the web. To unsubscribe from this group, send an email to:freedomyachts2003-unsubscribe@yahoogroups.com
Your use of Yahoo! Groups is subject to the Yahoo! Terms ofService.
Posted by lance_ryley (lance_ryley@…>)
I found an interesting link to hullspeed… if you follow the
calculations out, they make sense…
http://potter-yachters.org/manyways/hullspeed/
— In freedomyachts2003@yahoogroups.com, “lance_ryley”
<lance_ryley@y…> wrote:
I think for clarity, you meant 1.34 * SquareRoot(LWL)…
Lance
— In freedomyachts2003@yahoogroups.com, “walestom” <twales@a…>
wrote:The theoretical hull speed is determined by the formula:
1.34XLWL1/2
which in the case of the freedom 32 is 6.8 kts. I don’t believe
the
shallow draft will impact hull speed. Fully loaded will and your
boatspeed will be dependant upon how hard you want to push the
boat in
windy conditions. Reaching with main and jib in +15K winds I get
up to
hull speed pretty easily.
TW Anoush Koon '84 #20– In freedomyachts2003@yahoogroups.com, Sward
<swardfullsail@y…> wrote:What is the hull speed of the Freedom 32, shoal draft, fin
keel-fully loaded?Paul McFadden <pwhitmac@y…> wrote: My mast has a sticker
on
it
from the factory warning of the mast’s electrical conductivity.
If
I
were you I’d protect your boat just like you would if it had a
metal
stick.
PWMhopalongsail <hopalongsail@y…> wrote:
considering central america next year. any suggestions for
info on
how
our boats (read masts) do in a lightening strike? Thanks
Yahoo! Music Unlimited - Access over 1 million songs. Try it
free.SPONSORED LINKS
Sailing schools Sailing instruction Sailing
lesson
Sailing course Sailing adventure Sailing
YAHOO! GROUPS LINKS
Visit your group "freedomyachts2003" on the web. To unsubscribe from this group, send an email to:freedomyachts2003-unsubscribe@yahoogroups.com
Your use of Yahoo! Groups is subject to the Yahoo! Terms ofService.