[bolger] Re: Tubular Plywood
rlund-@...wrote:
original article:http://www.egroups.com/group/bolger/?start=766
etc. Irv Culver, the famous Lockheed aircraft designer of rigid rotor
helicopter and Skunk Works fame, helped Jim Maupin, of homebuilt glider
fame, design a carbon fiber tailboom for the 'Carbon Dragon' sailplane.
The technique is to use a thin wall aluminum irrigation pipe for the
form; wrap the carbon fiber around; cure; use swimming pool acid to
melt the alum tube out of the finished carbon fiber boom. (Keep the EPA
away!) You can reach Jim at, Jim Maupin, Ltd., 24201 Rowel Ct.,
Tehachapi, CA 93561. Of course, Jim might want to sell you a set of
plans for the Carbon Dragon... Now, go do your thing!
Bill
original article:http://www.egroups.com/group/bolger/?start=766
> Thanks for the info Charles.Robert, and others interested in carbon fiber masts, sprits, booms,
> This stuff (Hollowood might be really cool to wrap with a layer of
> Carbon Fiber for stength. Who wants to try a plywood cored carbon
> fiber mast? Takers, experimenters?
>
> Robert Lundy
etc. Irv Culver, the famous Lockheed aircraft designer of rigid rotor
helicopter and Skunk Works fame, helped Jim Maupin, of homebuilt glider
fame, design a carbon fiber tailboom for the 'Carbon Dragon' sailplane.
The technique is to use a thin wall aluminum irrigation pipe for the
form; wrap the carbon fiber around; cure; use swimming pool acid to
melt the alum tube out of the finished carbon fiber boom. (Keep the EPA
away!) You can reach Jim at, Jim Maupin, Ltd., 24201 Rowel Ct.,
Tehachapi, CA 93561. Of course, Jim might want to sell you a set of
plans for the Carbon Dragon... Now, go do your thing!
Bill
Fritz,
It's a tough call... It would be neat to have you - maybe you could come
through Tulsa.
Gregg
At 12:02 PM 11/10/1999 -0800, you wrote:
It's a tough call... It would be neat to have you - maybe you could come
through Tulsa.
Gregg
At 12:02 PM 11/10/1999 -0800, you wrote:
>>Oklahoma-Texas-Arkansas messabout on Lake Texoma next spring?
>
>Hmmmm....Ok Gregg, only question for me is what boat are you going to
>bring? Is this my chance to check out the step-chine Sneakeasy?
>
>Seriously, I might show (but sans Sneakeasy of course!) - any excuse
>for a break from Alaska weather!
>
>Fritz Funk
>My Boat Page (Bolger Sneakeasy and other stuff):http://www.alaska.net/
>~fritzf/Boats/Boats.htm
>
>
>
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>
>
>Oklahoma-Texas-Arkansas messabout on Lake Texoma next spring?Hmmmm....Ok Gregg, only question for me is what boat are you going to
bring? Is this my chance to check out the step-chine Sneakeasy?
Seriously, I might show (but sans Sneakeasy of course!) - any excuse
for a break from Alaska weather!
Fritz Funk
My Boat Page (Bolger Sneakeasy and other stuff):http://www.alaska.net/
~fritzf/Boats/Boats.htm
A great idea -- I'm there. Have never been to the lake. Looks like
only ~8 hours away .
Phil Lea
only ~8 hours away .
Phil Lea
> GHC wrote:Texoma
> >
> > Who here would come to a Oklahoma-Texas-Arkansas messabout on Lake
> > next spring?
> >
> > Gregg Carlson
I'll do my best to be there!
Count me in. Don't have a boat yet, but have plans and a complete model
for Folding Schooner. Waiting for work to let up... waiting...
-Steve
s-korson@...
for Folding Schooner. Waiting for work to let up... waiting...
-Steve
s-korson@...
Me - I'll come
Chuck
Chuck
> Who here would come to a Oklahoma-Texas-Arkansas messabout on Lake Texoma
> next spring?
>
> Gregg Carlson
>
>
> ------------------------------------------------------------------------
> -- 20 megs of disk space in your eGroup's Document Vault
> --http://www.egroups.com/docvault/bolger/?m=1
>
>
>
Count me in.
GHC wrote:
Richard
Spelling|richard@...|http://www.spellingbusiness.com
SBE Communications, Business Solutions for the next Millennium and
Beyond!
Boat building projects:http://www.sbecommunications.com/boats/index.htm
GHC wrote:
>--
> Who here would come to a Oklahoma-Texas-Arkansas messabout on Lake Texoma
> next spring?
>
> Gregg Carlson
>
> ------------------------------------------------------------------------
> -- 20 megs of disk space in your eGroup's Document Vault
> --http://www.egroups.com/docvault/bolger/?m=1
Richard
Spelling|richard@...|http://www.spellingbusiness.com
SBE Communications, Business Solutions for the next Millennium and
Beyond!
Boat building projects:http://www.sbecommunications.com/boats/index.htm
Who here would come to a Oklahoma-Texas-Arkansas messabout on Lake Texoma
next spring?
Gregg Carlson
next spring?
Gregg Carlson
<snip>
bird's mouth joint. Seems like an easy way to add a lot of stiffness.
BTW, joining tubes is easy. Use a small length of the next smallest
size, telescoped inside the larger pieces.
- Charles
> ...i'm going to attempt the bird mouth mast making procedure.<snip>An interesting variation might be to insert a carbon fiber tow in each
> Who wants to try a plywood cored carbon
> fiber mast? Takers, experimenters? <snip>
bird's mouth joint. Seems like an easy way to add a lot of stiffness.
BTW, joining tubes is easy. Use a small length of the next smallest
size, telescoped inside the larger pieces.
- Charles
Thanks for the info Charles.
I just checked their site. For a 3" size, the cost for 16 feet would
be $136.16. Not sure how you'd join them. the cost of the two boards
(1x6 #1 Fir, 16 ft lengths) was a around $1.69 per ft or $54.08 that
i'm going to attempt the bird mouth mast making procedure. Notice I
say attempt not actually build. The birds mouth method is going take a
lot of labor and long saw cuts to get right.
This stuff (Hollowood might be really cool to wrap with a layer of
Carbon Fiber for stength. Who wants to try a plywood cored carbon
fiber mast? Takers, experimenters?
Robert Lundy
charles buchwald <graphic-@...> wrote:
original article:http://www.egroups.com/group/bolger/?start=761
I just checked their site. For a 3" size, the cost for 16 feet would
be $136.16. Not sure how you'd join them. the cost of the two boards
(1x6 #1 Fir, 16 ft lengths) was a around $1.69 per ft or $54.08 that
i'm going to attempt the bird mouth mast making procedure. Notice I
say attempt not actually build. The birds mouth method is going take a
lot of labor and long saw cuts to get right.
This stuff (Hollowood might be really cool to wrap with a layer of
Carbon Fiber for stength. Who wants to try a plywood cored carbon
fiber mast? Takers, experimenters?
Robert Lundy
charles buchwald <graphic-@...> wrote:
original article:http://www.egroups.com/group/bolger/?start=761
> I've used this stuff for a couple of projects. I've always hadexcellent
> service. A couple of mail order catalogs list it for much higherprices
> -- direct from the man'f. is the way to go. You'll find pricing andURL?
> other info. athttp://www.brandnew.net/holwood.html
>
> The wall thickness is just 1/8", which makes it a bit fragile for most
> uses on a small boat. Might make a good sprit, gaff, or boom, though.
> Many sizes telescope inside others. They just recently began producing
> some with a 3/16" wall thickness that should be more robust, too.
>
> Somewhere I have a link to a small boat builder who has been using PVC
> pipe and wrapping layers of veneer around it to make spars; maybe this
> same technique could be used to beef up Hollowood. Anyone have the
>"tubular
> Also note that the Hollowood site has some technical data provided by
> the Gougeon bros., of WEST System fame, so I assume they have messed
> around with it, although I haven't seen any results of this.
>
> - Charles Buchwald
>
> "Robert N. Lundy" wrote:
> > I was persuing Messing About in boats and noticed the ad for
> > plywood"....<snip>
> > Anybody used this stuff for masts? how heavy is it?
I've used this stuff for a couple of projects. I've always had excellent
service. A couple of mail order catalogs list it for much higher prices
-- direct from the man'f. is the way to go. You'll find pricing and
other info. athttp://www.brandnew.net/holwood.html
The wall thickness is just 1/8", which makes it a bit fragile for most
uses on a small boat. Might make a good sprit, gaff, or boom, though.
Many sizes telescope inside others. They just recently began producing
some with a 3/16" wall thickness that should be more robust, too.
Somewhere I have a link to a small boat builder who has been using PVC
pipe and wrapping layers of veneer around it to make spars; maybe this
same technique could be used to beef up Hollowood. Anyone have the URL?
Also note that the Hollowood site has some technical data provided by
the Gougeon bros., of WEST System fame, so I assume they have messed
around with it, although I haven't seen any results of this.
- Charles Buchwald
"Robert N. Lundy" wrote:
service. A couple of mail order catalogs list it for much higher prices
-- direct from the man'f. is the way to go. You'll find pricing and
other info. athttp://www.brandnew.net/holwood.html
The wall thickness is just 1/8", which makes it a bit fragile for most
uses on a small boat. Might make a good sprit, gaff, or boom, though.
Many sizes telescope inside others. They just recently began producing
some with a 3/16" wall thickness that should be more robust, too.
Somewhere I have a link to a small boat builder who has been using PVC
pipe and wrapping layers of veneer around it to make spars; maybe this
same technique could be used to beef up Hollowood. Anyone have the URL?
Also note that the Hollowood site has some technical data provided by
the Gougeon bros., of WEST System fame, so I assume they have messed
around with it, although I haven't seen any results of this.
- Charles Buchwald
"Robert N. Lundy" wrote:
> I was persuing Messing About in boats and noticed the ad for "tubular
> plywood"....<snip>
> Anybody used this stuff for masts? how heavy is it?
I was persuing Messing About in boats and noticed the ad for "tubular
plywood" (just resubscribed after a four year hiatus). At first, I thought
this might be a joke ad like the time Cruising World ran an article in the
April issue about "Fiberglass Termites" as an April Fools joke.
Anybody used this stuff for masts? how heavy is it?
Robert & Amy Lundy
St. Petersburg, Fla.
plywood" (just resubscribed after a four year hiatus). At first, I thought
this might be a joke ad like the time Cruising World ran an article in the
April issue about "Fiberglass Termites" as an April Fools joke.
Anybody used this stuff for masts? how heavy is it?
Robert & Amy Lundy
St. Petersburg, Fla.