Re: Questions on UV curing polyester resins.

[Fred the Red Shirt]

No longer relevant to boat building so I've crossposted and set follow-
ups.
Thanks, r.b.b. guys!

On Mar 19, 8:55*pm, cavelamb > wrote:
> Fred the Red Shirt wrote:
>
>
>
> > On Mar 19, 3:53 pm, cavelamb > wrote:
> >> Fred the Red Shirt wrote:
>
>
> >>> I'm looking at materials and techniques that would be useful for a
> >>> homebuilt glider.
> >> ...
>
> >> I thought you have a set of Texas Parasol plans, Fred.
> >> Light and cheap techniques there.
>
> > Yes *I do and have found no better (where 'better' is defined
> > in terms of strong, light, fast, and not too expensive) way
> > to make a fuselage.
>
> > I think with composites I can make a lighter wing, considering
> > that a glider wing will be longer, thinner and have a shorter
> > chord than the TP wing.
>
> > --
>
> > FF
>
> The traditional primaries were quite heavy.
>
> Think aluminum angle primary glider type fuselage and take the wing and tail
> from the Texas Parasol.
>
> The whole mess wouldn't weight 100 pounds.
>

Cool! It needs to be under 150 to qualify as a FAR 103 UL glider.

How much does one TP wing weigh? How much does the
whole plane weigh, sans engine?

A 12' SkyPup wing with a 52" chord and weighs about 26 pounds,
but that has no drag spar or ailerons. The whole Pup weighs 205
lbs.

--

FF

[cavelamb[_2_]]

Fred the Red Shirt wrote:
> No longer relevant to boat building so I've crossposted and set follow-
> ups.
> Thanks, r.b.b. guys!
>
> On Mar 19, 8:55 pm, cavelamb > wrote:
>> Fred the Red Shirt wrote:
>>
>
> Cool! It needs to be under 150 to qualify as a FAR 103 UL glider.
>
> How much does one TP wing weigh?

Last ones I built were about 35 pounds each, with ailerons.
They could be 5 to 8 pounds lighter if it were important.
Leave out the false ribs (and the foam false spar that supports them).


How much does the
> whole plane weigh, sans engine?

Bare airframe was about 40 pounds on the gear.
But there is still a lot to add to that for a completed airplane.

But if you were after a primary glider style airframe?
I'd guess 50 pounds complete with single wheel.

LOTS of wire...
But wire is pretty light.

>
> --
>
> FF


--

Richard Lamb
http://www.home.earthlink.net/~cavelamb/

[cavelamb[_2_]]

Fred,

You might also want to take a look at Paper Dragon.
Similar wing, but single tube tailboom.

All zipped up for you.

http://groups.yahoo.com/group/texasparasol/files/Paper%20Dragon/

Richard

[Fred the Red Shirt]

On Mar 20, 1:46*pm, cavelamb > wrote:
> Fred,
>
> You might also want to take a look at Paper Dragon.
> Similar wing, but single tube tailboom.
>
> All zipped up for you.
>
> http://groups.yahoo.com/group/texasparasol/files/Paper%20Dragon/

Thanks.

That's a lot like one of Mike Sandlin's airchairs, only with
an engine.

Have you sen Marske's flying wings:
http://www.continuo.com/marske/
He describes his method for using carbon fiber rods here:
http://www.continuo.com/marske/ARTICLES/Carbon%20rods/carbon.htm
and here:
http://www.marskeaircraft.com/carbonrod.html

Meanwhile, on the subject of wire bracing, how is proper
tension obtained on the wires? Are they terminated with
a threaded fastener like a bicycle spoke?



--

FF

[cavelamb[_2_]]

Fred the Red Shirt wrote:
> On Mar 20, 1:46 pm, cavelamb > wrote:
>> Fred,
>>
>> You might also want to take a look at Paper Dragon.
>> Similar wing, but single tube tailboom.
>>
>> All zipped up for you.
>>
>> http://groups.yahoo.com/group/texasparasol/files/Paper%20Dragon/
>
> Thanks.
>
> That's a lot like one of Mike Sandlin's airchairs, only with
> an engine.
>
> Have you sen Marske's flying wings:
> http://www.continuo.com/marske/
> He describes his method for using carbon fiber rods here:
> http://www.continuo.com/marske/ARTICLES/Carbon%20rods/carbon.htm
> and here:
> http://www.marskeaircraft.com/carbonrod.html
>
> Meanwhile, on the subject of wire bracing, how is proper
> tension obtained on the wires? Are they terminated with
> a threaded fastener like a bicycle spoke?
>
>
>
> --
>
> FF


I like turnbuckles.

But you can also just twist the wire.

Twist with the lay to tighten, against to loosen.




--

Richard Lamb
http://www.home.earthlink.net/~cavelamb/