Re: [bolger] One more thing about mast for sprit rigs?
On 19 Aug 2001, at 5:02, Todd wrote:
how to do it.
a short snippet of his unmistakeable prose:
I think the following technique was got from the SailRite "Make Your Own
Mainsails" manual I got about 20 years ago but have now misplaced. Very
simple. Support the mast on sawhorses where the sail's head and tack will
be. Suspend a weight midway between those two points. The weight is
equal in pounds to half the sail area in square feet. Then stretch a line
between the starting points and measure the deflection at enough points to
"map" it out. I just use three points
i am going to do it next weekend. if you cannot find the article, i can mail it
to you!
hannes
> How should I cut the polytarp luff and foot curve? Wouldtodd, in the back issues of jim michalak you can find excellent instructions on
> I add more curve or less for the stiffer mast?
>
> How do i get the correct draft in the sail?
>
how to do it.
a short snippet of his unmistakeable prose:
I think the following technique was got from the SailRite "Make Your Own
Mainsails" manual I got about 20 years ago but have now misplaced. Very
simple. Support the mast on sawhorses where the sail's head and tack will
be. Suspend a weight midway between those two points. The weight is
equal in pounds to half the sail area in square feet. Then stretch a line
between the starting points and measure the deflection at enough points to
"map" it out. I just use three points
i am going to do it next weekend. if you cannot find the article, i can mail it
to you!
hannes
Todd:
The pvc tube idea sounds good to me, just make sure you give is adequate
drain holes.
The sail is going to be laced to the mast and used with a sprit boom, right?
I would think about epoxying a couple of thumbs to the mast, one for the
snotter, and one for the tack. You might consider reinforcing the mast at
these points (esp. the snotter thumb). install a cleat for the snotter
somewhere on the boat at the base of the mast. Does that make sense?
Chuck
The pvc tube idea sounds good to me, just make sure you give is adequate
drain holes.
The sail is going to be laced to the mast and used with a sprit boom, right?
I would think about epoxying a couple of thumbs to the mast, one for the
snotter, and one for the tack. You might consider reinforcing the mast at
these points (esp. the snotter thumb). install a cleat for the snotter
somewhere on the boat at the base of the mast. Does that make sense?
Chuck
>
> Its not so much the weight of the mast I was concerned about but the
> the length.
>
> For a mast collar i was goig to use a 12'' long pvc tube with a
> glued cap on the bottom. Cut a circle instead of a square in the knee
> and bolt, glue or screw the 12''tubing down inside along the
> starboard hull . In place of the mast heel partner. Just drop the mast
> down inside the tube. I'll have the inside of the mast reinforced
> about 24'' up with a mast bast
>
> Should the tack of the sail be held down and attached to the mast or
> can I run the tack line down to the knee and through a cleat?
>
> Todd
>
> --- In bolger@y..., "Chuck Leinweber" <chuck@d...> wrote:
> > Todd:
> >
> > I don't think it's legal in most states to use a carbon fiber mast
> in a
> > Brick. In fact, just to be safe, why don't you sent it to me. I
> will make
> > sure that it's properly disposed of. Just kidding, it should make a
> great
> > mast, if it's strong enough. You might want to reinforce it a bit
> where it
> > engages the partner and the step. Maybe build some kind of collar
> that
> > feathers out about a foot above the partner. A plug in the bottom
> couple of
> > feet might work, instead.
> >
> > Have you read Dave Gray? He has a lot of information on his website
> >http://hometown.aol.com/polysail/HTML/index.htm
> >
> > As anyone will tell you, there is a certain amount of guesswork
> involved in
> > making a sail. To me, the big advantage of using polytarp is that
> you can
> > experiment without breaking the bank. I've made four or five sails,
> and
> > they all seem to work, so jump in, the water's fine.
> >
> > Chuck
> >
> >
> > > How could I use a two piece 3lb. carbon windsurfing mast for my
> > > bolger brick? How should I cut the polytarp luff and foot curve?
> Would
> > > I add more curve or less for the stiffer mast?
> > >
> > > How do i get the correct draft in the sail?
> > >
> > > Yes, sounds like over kill but I don't have to pay for the two
> piece
> > > carbon mast! I also like the fact that I don't have to lug around
> a
> > > 16' stick.
> > >
> > > Thanks ,
> > > Todd
> > >
> > >
> > >
> > >
> > > Bolger rules!!!
> > > - no cursing, flaming, trolling, spamming, or flogging dead horses
> > > - pls take "personals" off-list, stay on topic, and punctuate
> > > - add your comments at the TOP and SIGN your posts, snip all you
> like
> > > - To order plans: Mr. Philip C. Bolger, P.O. Box 1209,
> > > Gloucester, MA, 01930, Fax: (978) 282-1349
> > > - Unsubscribe: bolger-unsubscribe@y...
> > >
> > > Your use of Yahoo! Groups is subject to
>http://docs.yahoo.com/info/terms/
> > >
> > >
> > >
>
>
> Bolger rules!!!
> - no cursing, flaming, trolling, spamming, or flogging dead horses
> - pls take "personals" off-list, stay on topic, and punctuate
> - add your comments at the TOP and SIGN your posts, snip all you like
> - To order plans: Mr. Philip C. Bolger, P.O. Box 1209,
> Gloucester, MA, 01930, Fax: (978) 282-1349
> - Unsubscribe:bolger-unsubscribe@yahoogroups.com
>
> Your use of Yahoo! Groups is subject tohttp://docs.yahoo.com/info/terms/
>
>
>
Its not so much the weight of the mast I was concerned about but the
the length.
For a mast collar i was goig to use a 12'' long pvc tube with a
glued cap on the bottom. Cut a circle instead of a square in the knee
and bolt, glue or screw the 12''tubing down inside along the
starboard hull . In place of the mast heel partner. Just drop the mast
down inside the tube. I'll have the inside of the mast reinforced
about 24'' up with a mast bast
Should the tack of the sail be held down and attached to the mast or
can I run the tack line down to the knee and through a cleat?
Todd
the length.
For a mast collar i was goig to use a 12'' long pvc tube with a
glued cap on the bottom. Cut a circle instead of a square in the knee
and bolt, glue or screw the 12''tubing down inside along the
starboard hull . In place of the mast heel partner. Just drop the mast
down inside the tube. I'll have the inside of the mast reinforced
about 24'' up with a mast bast
Should the tack of the sail be held down and attached to the mast or
can I run the tack line down to the knee and through a cleat?
Todd
--- In bolger@y..., "Chuck Leinweber" <chuck@d...> wrote:
> Todd:
>
> I don't think it's legal in most states to use a carbon fiber mast
in a
> Brick. In fact, just to be safe, why don't you sent it to me. I
will make
> sure that it's properly disposed of. Just kidding, it should make a
great
> mast, if it's strong enough. You might want to reinforce it a bit
where it
> engages the partner and the step. Maybe build some kind of collar
that
> feathers out about a foot above the partner. A plug in the bottom
couple of
> feet might work, instead.
>
> Have you read Dave Gray? He has a lot of information on his website
>http://hometown.aol.com/polysail/HTML/index.htm
>
> As anyone will tell you, there is a certain amount of guesswork
involved in
> making a sail. To me, the big advantage of using polytarp is that
you can
> experiment without breaking the bank. I've made four or five sails,
and
> they all seem to work, so jump in, the water's fine.
>
> Chuck
>
>
> > How could I use a two piece 3lb. carbon windsurfing mast for my
> > bolger brick? How should I cut the polytarp luff and foot curve?
Would
> > I add more curve or less for the stiffer mast?
> >
> > How do i get the correct draft in the sail?
> >
> > Yes, sounds like over kill but I don't have to pay for the two
piece
> > carbon mast! I also like the fact that I don't have to lug around
a
> > 16' stick.
> >
> > Thanks ,
> > Todd
> >
> >
> >
> >
> > Bolger rules!!!
> > - no cursing, flaming, trolling, spamming, or flogging dead horses
> > - pls take "personals" off-list, stay on topic, and punctuate
> > - add your comments at the TOP and SIGN your posts, snip all you
like
> > - To order plans: Mr. Philip C. Bolger, P.O. Box 1209,
> > Gloucester, MA, 01930, Fax: (978) 282-1349
> > - Unsubscribe: bolger-unsubscribe@y...
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
> >
Cliff,
Into the Windhttp://www.intothewind.com/index.html,a kite shop, has
unlabeled tyvek at
http://www.intothewind.com/cgi-bin/detail.cgi?itemnum=402&sql=ks
I've never done business with them but did save the URL when I ran across
it.
Larry
Into the Windhttp://www.intothewind.com/index.html,a kite shop, has
unlabeled tyvek at
http://www.intothewind.com/cgi-bin/detail.cgi?itemnum=402&sql=ks
I've never done business with them but did save the URL when I ran across
it.
Larry
----- Original Message -----
From: <cliff25@...>
To: <bolger@yahoogroups.com>
Sent: Sunday, August 19, 2001 8:23 AM
Subject: Re: [bolger] Re: One more thing about mast for sprit rigs?
> <<No one seems to go for Tyvec sails. They work, we had one for a
> while.>>
>
> Can you buy Tyvek from the manufacturer without the logo?
>
> Cliff
<<No one seems to go for Tyvec sails. They work, we had one for a
while.>>
Can you buy Tyvek from the manufacturer without the logo?
Cliff
http://www.angelfire.com/mi/mmmkkk/
(Last of the Red Hot DJs)
while.>>
Can you buy Tyvek from the manufacturer without the logo?
Cliff
http://www.angelfire.com/mi/mmmkkk/
(Last of the Red Hot DJs)
Michalak has some info about making your own sails.
www.apci.net/~michalak
I think you want to make the sail a bit flatter with a rigid mast,
because if I'm not mistaken a bendy mast flattens the sail. Of course
that can be handy as the wind comes up, plus a bendy mast seems to
dump load off the top of the sail first. The Brick mast with the
designed taper is very light and luggable, but I admit the length can
be awkward. Not in terms of inertia, but just fitting it into places.
Kind of amusing to watch me getting it thru the basement bulkhead and
stowed. The weight is no problem at all; it's very easy to pick up
with one hand.
No one seems to go for Tyvec sails. They work, we had one for a while.
www.apci.net/~michalak
I think you want to make the sail a bit flatter with a rigid mast,
because if I'm not mistaken a bendy mast flattens the sail. Of course
that can be handy as the wind comes up, plus a bendy mast seems to
dump load off the top of the sail first. The Brick mast with the
designed taper is very light and luggable, but I admit the length can
be awkward. Not in terms of inertia, but just fitting it into places.
Kind of amusing to watch me getting it thru the basement bulkhead and
stowed. The weight is no problem at all; it's very easy to pick up
with one hand.
No one seems to go for Tyvec sails. They work, we had one for a while.
--- In bolger@y..., "Chuck Leinweber" <chuck@d...> wrote:
> Todd:
>
> I don't think it's legal in most states to use a carbon fiber mast
in a
> Brick. snip
> Chuck
>
>
> > How could I use a two piece 3lb. carbon windsurfing mast for my
> > bolger brick? How should I cut the polytarp luff and foot curve?
Would
> > I add more curve or less for the stiffer mast?
> >
> > How do i get the correct draft in the sail?
> >
> > Yes, sounds like over kill but I don't have to pay for the two
piece
> > carbon mast! I also like the fact that I don't have to lug around
a
> > 16' stick.
> >
> > Thanks ,
> > Todd
> >
> >
> >
> >
>
Todd:
I don't think it's legal in most states to use a carbon fiber mast in a
Brick. In fact, just to be safe, why don't you sent it to me. I will make
sure that it's properly disposed of. Just kidding, it should make a great
mast, if it's strong enough. You might want to reinforce it a bit where it
engages the partner and the step. Maybe build some kind of collar that
feathers out about a foot above the partner. A plug in the bottom couple of
feet might work, instead.
Have you read Dave Gray? He has a lot of information on his website
http://hometown.aol.com/polysail/HTML/index.htm
As anyone will tell you, there is a certain amount of guesswork involved in
making a sail. To me, the big advantage of using polytarp is that you can
experiment without breaking the bank. I've made four or five sails, and
they all seem to work, so jump in, the water's fine.
Chuck
I don't think it's legal in most states to use a carbon fiber mast in a
Brick. In fact, just to be safe, why don't you sent it to me. I will make
sure that it's properly disposed of. Just kidding, it should make a great
mast, if it's strong enough. You might want to reinforce it a bit where it
engages the partner and the step. Maybe build some kind of collar that
feathers out about a foot above the partner. A plug in the bottom couple of
feet might work, instead.
Have you read Dave Gray? He has a lot of information on his website
http://hometown.aol.com/polysail/HTML/index.htm
As anyone will tell you, there is a certain amount of guesswork involved in
making a sail. To me, the big advantage of using polytarp is that you can
experiment without breaking the bank. I've made four or five sails, and
they all seem to work, so jump in, the water's fine.
Chuck
> How could I use a two piece 3lb. carbon windsurfing mast for my
> bolger brick? How should I cut the polytarp luff and foot curve? Would
> I add more curve or less for the stiffer mast?
>
> How do i get the correct draft in the sail?
>
> Yes, sounds like over kill but I don't have to pay for the two piece
> carbon mast! I also like the fact that I don't have to lug around a
> 16' stick.
>
> Thanks ,
> Todd
>
>
>
>
> Bolger rules!!!
> - no cursing, flaming, trolling, spamming, or flogging dead horses
> - pls take "personals" off-list, stay on topic, and punctuate
> - add your comments at the TOP and SIGN your posts, snip all you like
> - To order plans: Mr. Philip C. Bolger, P.O. Box 1209,
> Gloucester, MA, 01930, Fax: (978) 282-1349
> - Unsubscribe:bolger-unsubscribe@yahoogroups.com
>
> Your use of Yahoo! Groups is subject tohttp://docs.yahoo.com/info/terms/
>
>
>
How could I use a two piece 3lb. carbon windsurfing mast for my
bolger brick? How should I cut the polytarp luff and foot curve? Would
I add more curve or less for the stiffer mast?
How do i get the correct draft in the sail?
Yes, sounds like over kill but I don't have to pay for the two piece
carbon mast! I also like the fact that I don't have to lug around a
16' stick.
Thanks ,
Todd
bolger brick? How should I cut the polytarp luff and foot curve? Would
I add more curve or less for the stiffer mast?
How do i get the correct draft in the sail?
Yes, sounds like over kill but I don't have to pay for the two piece
carbon mast! I also like the fact that I don't have to lug around a
16' stick.
Thanks ,
Todd