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Search: Posts Made By: dertjack
Showing results 1 to 11 of 11
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Forum: Composites Fabrication And Repair
06-13-2012, 11:34 AM
Replies: 8
Views: 1,333
Posted By dertjack

RE: Brush cleaners from resins

Put them in the freezer. Takes a few minutes of brushing to thaw them out, but the freezer stops the curing process cold.
Forum: Composites Fabrication And Repair
10-01-2010, 09:54 AM
Replies: 7
Views: 1,254
Posted By dertjack

RE: Need help with Badger

I use havaheart traps for my badger problems. The like peanut butter crackers!!
Forum: Composites Fabrication And Repair
10-01-2010, 09:35 AM
Replies: 22
Views: 8,954
Posted By dertjack

RE: 156

A spar consists of an upper and lower cap and a shear web. In this case the upper cap is the Uni carbon. It's not clear, but I assume you will have two 1x1 spars, one on the upper surface and one on...
Forum: Composites Fabrication And Repair
10-15-2009, 12:03 PM
Replies: 3
Views: 1,199
Posted By dertjack

RE: Carbon fiber tailboom layup question.

Woven polyester peel ply is used to make the surface more bondable. The weight does not matter, the material is removed after cure. It creats a textured surface that helps bond the next piece you...
Forum: Composites Fabrication And Repair
10-05-2009, 03:26 PM
Replies: 12
Views: 3,625
Posted By dertjack

RE: Mixing larger amounts of resin

Changing the ratio works fine with polyester resins. The hardener is truly just a catalyst

It should not be done with epoxy. The hardener is part of the matrix.
Forum: Composites Fabrication And Repair
10-05-2009, 03:20 PM
Replies: 8
Views: 3,546
Posted By dertjack

RE: forming lexan

I agree PET-G is a better material for forming. Just as tough as lexan and easier to ther****rm.
Forum: Aerodynamics
12-03-2008, 01:21 PM
Replies: 47
Views: 22,270
Posted By dertjack

RE: Calculate max air speed of a plane?

Lunar,

Your plane has nothing to do with radio controled airplanes. It if far more advanced. It is a UAV (as people have said). It requires an autonomous control system, (you will likely lose...
Forum: Composites Fabrication And Repair
11-21-2008, 12:31 PM
Replies: 39
Views: 5,425
Posted By dertjack

RE: Hawker Tempest Project!

Where did you learn to do resin infusion? What are you using for the resin distribution material?
Forum: Composites Fabrication And Repair
10-05-2006, 03:08 PM
Replies: 12
Views: 1,780
Posted By dertjack

RE: If you could only use one composite fabric, what would it be?

"Composites" is a reinforcement and a matrix. Glass and epoxy is a composite. High quality composites can be achieve with simple wet layup (no vac bag, no autoclave, no heat cure). Quality (high...
Forum: Composites Fabrication And Repair
10-03-2006, 09:45 AM
Replies: 12
Views: 1,780
Posted By dertjack

RE: If you could only use one composite fabric, what would it be?

Are you going to buy a 100 yd roll of material? You can buy what ever you want by the yard. Why limit yourself to one weight of one material. They all have their own strengths and weaknesses. Kevlar...
Forum: Extreme Speed Prop Planes
07-25-2006, 06:40 PM
Replies: 3
Views: 1,037
Posted By dertjack

RE: Twin Long EZ

Like a Rutan Defiant
Showing results 1 to 11 of 11


 
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