Pete_A

I know it isn't Aviation, but if you count the sail there are still aerodynamics going on.

This is my first ever exposure to working with composites

http://icflatpack.blogspot.com/

G'day all

 

 

2. How can I verify the templates if they are cut and the mearurements are not available?

 

 

Thank you in advance;

 

Jeff

Jeff,

Do you still have the rest of the A0 paper you cut the templates from ? If so, check the verification dimensions on the edge of the paper for discrepancies.

You are looking for fractional differences, don't stress if you come across a couple that are a whole inch out as Jon had a couple of dyslexic moments when he was adding the verification dimensions.

Sorry, I think you are asking how to prove the templates if the verification dimensions are not available ? I guess the only other option is to compare chord line dimensions. Which of your templates do you not have the verification dimensions available for? I am sure somebody can run a ruler over their prints.

Pete

G'day all

 

My biggest concern are the template errors. This foam stuff is kind of $$ and I don't want to be several inches off.... Doh!

 

Jeff

Don't worry about the templates, apart from the couple of dyslexic moments adding an extra 1 to the baseline markers the templates look good. I recently plotted them off onto trace and measured them up against cozy IV originals and the profiles are spot on. There are a few subtle differences with sparcap layups due to increased gross but otherwise they are remarkably similar

Wasn't there a guy on the list who was CnC'ing cores ? I have no idea what the price differences are, or if the CnC cores are still available. But if you are concerned about accuracy that may be the way to go.

 

Regarding the West Systems Epoxy, I beleive it has been approved for structual layups as per Cozy newsletters. I Will check on this but I believe it has been brought up a few times in various other threads.

 

Jamie

Just for interest, General Atomics use West Systems for repairs on their Predator and Mariner UAV's

I know nothing of the properties of West Systems so take this as simply an interesting observation.

Have you considered using a supplied air respirator like professional welders ? You can get lightweight, full face masks that will let you wear glasses under them. Forced air will keep the sweat down and with the right welders air source you can drop the supplied air temp by 45F under ambient.

I believe the setup is fairly expensive, but your long term health is priceless. As has already been mentioned, what is the point of building a sweet ride if you get bounced on your medical ?

I wear a good dust mask when sanding. But if I have to wear a respirator to work on the plane, then the plane will be sold. It's a simple as that. The dust mask is just barely tolerable to me - steamed up glasses, wet, dripping face under the dust mask. Very unpleasant - but tolerable.

 

But the respirator with plastic (rubber?) touching my entire face, glasses pushed up so far that I can only see through the lower portion of the bi-focals - just ain't gonna happen. I'll sell the project and build a metal plane if it gets to the point that I have to wear a respirator.

This is from an uneducated and inexperienced perspective, but has anybody flipped the sidestick over to the LH side console ?

Pretty much every GA aircraft I have looked at seem to all have control in the left hand and power in the right. It seems to me that in a busy environment where you might be taking notes on a knee board it would be really hand to have your right hand free ? Apologies to all the wierdo left handers out there

Thoughts?

Pete