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Old Sep 18, 2010, 10:31 AM
Building with TLAR precision
Zenmaniac's Avatar
near Madison, WI
Joined Jan 2009
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Quote:
Originally Posted by johannlochner View Post
That's not a bad weight at all Dave!
My one wing core weighs 33g
sooo ...
10g cloth and +-10g epoxy....
Very light!!
What was your glass lay-up??
Did you lay it up on the bias? and does it "feel strong enough?
Good one Dave!
Sorry... missed all the questions...

I used 2oz cloth -- if my math is any good is like 50g/m2.

Didn't put it on the bias, but should have. It allowed way too much twist. This weekend's full wing will be a double layer of 3/4oz cloth, one on the bias and the other straight on each side. Wish me luck!

Tested a new bag last night, held 12lbs of pressure rock solid all night.

-= Dave
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Old Sep 18, 2010, 04:56 PM
Stirring the pot
johannlochner's Avatar
Port Elizabeth South Africa
Joined Jun 2008
4,017 Posts
Quote:
Originally Posted by Zenmaniac View Post
Sorry... missed all the questions...
I used 2oz cloth -- if my math is any good is like 50g/m2.
Didn't put it on the bias, but should have. It allowed way too much twist. This weekend's full wing will be a double layer of 3/4oz cloth, one on the bias and the other straight on each side. Wish me luck!
-= Dave
Thanks Dave
Do you use any other reinforcing in places like the LE, TE, wing tips and hinge line?
3/4 oz is pretty light
The lightest cloth I can get is 30g/m2
Are you trying live hinges or other... (taped/ silicon-ed)
We went out to friends this evening and got nothing done on the wing...
Sean's fuz is curing and tomorrow,
I'll tackle the wing...
If the wind does not blow!
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Old Sep 18, 2010, 10:23 PM
Building with TLAR precision
Zenmaniac's Avatar
near Madison, WI
Joined Jan 2009
2,666 Posts
Quote:
Originally Posted by johannlochner View Post
Thanks Dave
Do you use any other reinforcing in places like the LE, TE, wing tips and hinge line?
3/4 oz is pretty light
The lightest cloth I can get is 30g/m2
Are you trying live hinges or other... (taped/ silicon-ed)
We went out to friends this evening and got nothing done on the wing...
Sean's fuz is curing and tomorrow,
I'll tackle the wing...
If the wind does not blow!
I'm following Thepasty's recommended 6oz (200g) cloth on the LE. 3/4oz/yd x 2 layers should give me 1 1/2oz/yd on a side, which converts to 50.2 g/m2 if my math is right, close to the 50g on posting #1.

I was going to use Goop hinges, never made one but it seems simple and strong, and I've got Goop in the drawer. I've never made a live hinge either.

-= Dave
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Old Sep 19, 2010, 12:21 AM
Stirring the pot
johannlochner's Avatar
Port Elizabeth South Africa
Joined Jun 2008
4,017 Posts
Sooo...
We enlisted some help!
As regards a temporary vacuum regulator!
That is until Alain decides to come back!!

Sean's Dad did the modifications as per Steve's diagrams....
And it works!
Sort of..
It regulates between 12-17"
Which is way better than I managed!

so today we'll do Sean's wing
Just got to spray up the Mylars first!
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Old Sep 19, 2010, 12:41 AM
Twisted and Confused
flyonline's Avatar
Joined May 2003
4,329 Posts
Nice work!

If you want a tighter deadband, you can get it by having the contact between the micro switch and the bolt closer to the bend on the switch i.e. it moves less distance to turn on/off. You can do that here by rotating the switch so it sits vertically, or by placing a nut on the bolt so the contact is further along.

Oh, and you might want to put a cover over the live wires so you don't accidentaly short them out

Steve
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Old Sep 19, 2010, 02:47 AM
Fly fast, Dont crash.
Thepasty's Avatar
Cornwall, UK
Joined Sep 2006
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Quote:
Originally Posted by Zenmaniac View Post
I'm following Thepasty's recommended 6oz (200g) cloth on the LE. 3/4oz/yd x 2 layers should give me 1 1/2oz/yd on a side, which converts to 50.2 g/m2 if my math is right, close to the 50g on posting #1.

I was going to use Goop hinges, never made one but it seems simple and strong, and I've got Goop in the drawer. I've never made a live hinge either.

-= Dave
you might want to be careful with the goop hinge Dave, I'm pretty sure goop eats foam for fun. Silicone works well (you need the right stuff) and tape is perfectly functional.
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Old Sep 19, 2010, 07:34 AM
Stirring the pot
johannlochner's Avatar
Port Elizabeth South Africa
Joined Jun 2008
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Sean's wing is in the bag!
Erm....
May be a bit heavy for his liking....
I did the prep work..
Stood back and surveyed my handy work,
and decided....
More is better!!1

So, some additional reinforcing tape went on the LE!

I also used a very slow curing epoxy..
It may be a couple of days!!
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Old Sep 19, 2010, 09:37 AM
Fly fast, Dont crash.
Thepasty's Avatar
Cornwall, UK
Joined Sep 2006
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my sally with a single layer of 50g cloth on the wings is still going strong... less weight means you need less strength. I've spanked it in a couple of times hard enough to break the pod keel and the wing is still cool.

Come on J! you can do a 200g version!
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Old Sep 19, 2010, 11:41 AM
Missing you too FB!
Bakkie's Avatar
South Africa, Eastern Cape, Port Elizabeth
Joined Sep 2010
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Quote:
Originally Posted by Thepasty View Post
my sally with a single layer of 50g cloth on the wings is still going strong... less weight means you need less strength. I've spanked it in a couple of times hard enough to break the pod keel and the wing is still cool.

Come on J! you can do a 200g version!
Thepasty you are putting the okes under pressure here and I like it I was at the Slope Cafe when Johan arrived with the fuzz and it only weighs 50g

I took some pics and a video clip which I'll load later.
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Old Sep 19, 2010, 11:46 AM
Stirring the pot
johannlochner's Avatar
Port Elizabeth South Africa
Joined Jun 2008
4,017 Posts
Alain's back!
Now....
We have more vacuum regulators than we know what to do with!

Steve...
I am trying!
Sean has a new fuz! (with some paint blemishes)
I think the painted mould stood for to many days without following up with the lay-up!
But, the good news is...
She's light!!

I'll have to do him another wing!
A light one!
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Old Sep 19, 2010, 11:53 AM
Missing you too FB!
Bakkie's Avatar
South Africa, Eastern Cape, Port Elizabeth
Joined Sep 2010
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Quote:
Originally Posted by johannlochner View Post
I'll have to do him another wing!
A light one!
does that mean that my wing is gonna be yellow
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Old Sep 19, 2010, 12:22 PM
.....till the wind drops.
Sean Oelofse's Avatar
Port Elizabeth, South Africa
Joined Oct 2006
3,580 Posts
Quote:
Originally Posted by johannlochner View Post
Alain's back!
Now....
We have more vacuum regulators than we know what to do with!

Steve...
I am trying!
Sean has a new fuz! (with some paint blemishes)
I think the painted mould stood for to many days without following up with the lay-up!
But, the good news is...
She's light!!

I'll have to do him another wing!
A light one!
J, it might be square, but not sure a 3Amp is going to cut it!!
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Old Sep 19, 2010, 12:26 PM
Stirring the pot
johannlochner's Avatar
Port Elizabeth South Africa
Joined Jun 2008
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Quote:
Originally Posted by Bakkie View Post
does that mean that my wing is gonna be yellow
Back in your corner Panda!
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Old Sep 19, 2010, 12:33 PM
.....till the wind drops.
Sean Oelofse's Avatar
Port Elizabeth, South Africa
Joined Oct 2006
3,580 Posts
Cant wait for you Greg!!

Thanx J for the very cool fuzz!!
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Old Sep 19, 2010, 12:55 PM
Building with TLAR precision
Zenmaniac's Avatar
near Madison, WI
Joined Jan 2009
2,666 Posts
Quote:
Originally Posted by Thepasty View Post
you might want to be careful with the goop hinge Dave, I'm pretty sure goop eats foam for fun. Silicone works well (you need the right stuff) and tape is perfectly functional.
Good caution, Steve. I was going to seal up the end of the foam with some epoxy and microballoons after carving some foam out for the hinge movement.

-= Dave
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