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Search: Posts Made By: gjs
Showing results 1 to 25 of 67
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Forum: RC Gliders, Sailplanes and Slope Soaring
12-03-2003, 02:09 PM
Replies: 10
Views: 984
Posted By gjs

RE: Building questions.

Plans in magazine is where I learned. xerox enlarge and study. some hobby shops recycle old magazines if you cant find a new sailplane plan. Do a google search " building sailplane" 'fuse' r/c."
Forum: Composites Fabrication And Repair
12-02-2003, 06:02 PM
Replies: 32
Views: 5,456
Posted By gjs

RE: Types of Kevlar

One way Kevlar is used is in thicker laminations. thickness resists buckleing and is still lighter than glass of same stiffness.
Forum: Composites Fabrication And Repair
12-02-2003, 05:49 PM
Replies: 17
Views: 2,184
Posted By gjs

RE: Light landing gear

Steel sounds heavy
Forum: Composites Fabrication And Repair
12-02-2003, 03:06 PM
Replies: 17
Views: 2,184
Posted By gjs

Light landing gear

Greetings Fellow Fabricators!

Has anyone seen a carbon landing gear with plywood core?

And if not, anyone Know Why?


Challenge Everything!

gjs
Forum: Composites Fabrication And Repair
12-01-2003, 01:10 PM
Replies: 0
Views: 640
Posted By gjs

Fuselage bagging

Another application of molded plywood construction was used by Jack Northrop in the construction of the Loughhead S-1. For the S-1. They used a 21-foot-long concrete mold. In this mold were placed...
Forum: Composites Fabrication And Repair
11-30-2003, 12:09 PM
Replies: 1
Views: 546
Posted By gjs

RE: CF plates and rods supplier wanted

Yes,

ModelResearchLabs.com, 36" lengths
and plates I believe.
Forum: Composites Fabrication And Repair
11-30-2003, 11:56 AM
Replies: 0
Views: 1,167
Posted By gjs

3.1) Fiber Reinforcement

3.0) COMPOSITE PART MANUFACTURE

3.1) Fiber Reinforcement



Once all the appropriate tooling is constructed the final part is ready to be made. The first necessary decision is that of...
Forum: Composites Fabrication And Repair
11-30-2003, 11:47 AM
Replies: 1
Views: 495
Posted By gjs

Composites info

Strength of Sandwich Structures

As we have shown in the previous section, the main advantage of sandwich core structures is that they are stiff and light. However, stiffness alone is not enough....
Forum: Park Flyers & Backyard Flyers
10-29-2003, 09:22 AM
Replies: 3
Views: 402
Posted By gjs

RE: Pack size?

There's no hints if it had a separate rx pack or BEC, no info on esc.
Forum: Park Flyers & Backyard Flyers
10-16-2003, 01:08 PM
Replies: 3
Views: 402
Posted By gjs

Pack size?

Greetings,
I’ve acquired an old Wattage 2ch and am wondering how many cells it ran on and size. Anyone familiar with Wattage products? Probably made mid 90s, Speed 400 (380 actually), PE fuse,...
Forum: "1/2 A" & "1/8 A" airplanes
10-16-2003, 12:45 PM
Replies: 2
Views: 399
Posted By gjs

Pack size

Greetings,
I’ve acquired an old Wattage 2ch and am wondering how many cells it ran on and size. Anyone familiar with Wattage products? Probably made mid 90s, Speed 400 (380 actually), PE fuse,...
Forum: Composites Fabrication And Repair
08-22-2003, 05:05 PM
Replies: 17
Views: 2,119
Posted By gjs

How do I get a smooth finish on sanded Kevlar cloth?

Sorry , I havent seed the kevlar fuzzies actually, i just know synthectic fibers generally melt with the touch of a flame without having to accumulate enough heat to start full blown combustion....
Forum: Composites Fabrication And Repair
08-22-2003, 12:49 AM
Replies: 22
Views: 1,977
Posted By gjs

Using plastic as a mold?

Toughen and smooth sound like you just want to skin with resin. Done that and it's ugly if you don't put something like a sheet of siran wrap over it to help smooth it out. Try it on some scrap, see...
Forum: Composites Fabrication And Repair
08-22-2003, 12:31 AM
Replies: 0
Views: 501
Posted By gjs

how and Why of FOAM cores

This is from an article about metal foams, probably see them in cars soon, but I thought it a pretty good explanation.


Structural Material
Foams intrinsically combine relatively high stiffness...
Forum: Composites Fabrication And Repair
08-22-2003, 12:09 AM
Replies: 2
Views: 897
Posted By gjs

Source of Kevlar thread &carbon fiber rods??

The Kite guy stock some, Ive read reference to "when available" or something like that from materials outlets like Fiberglast , maybe just over runs.

Sorry, all I Know.
Forum: Tips & Techniques
08-21-2003, 07:02 PM
Replies: 2
Views: 736
Posted By gjs

Polyurethane Or Epoxy?

Nice thing about Polyurethane, Ive found, is you can squeegee it all off, and with enough moisture and heat it foams enough to grab Skin if in contact. Do some test samples. Use weight of some kind...
Forum: Composites Fabrication And Repair
08-21-2003, 06:42 PM
Replies: 22
Views: 1,977
Posted By gjs

Plastic parts

Are these plastic parts stiff enough that they won't warp while cureing?
Forum: Composites Fabrication And Repair
08-21-2003, 06:27 PM
Replies: 2
Views: 550
Posted By gjs

How many layer and size of fibre..

I want a thin shell and ribs inside.

please.
Forum: Composites Fabrication And Repair
08-21-2003, 11:52 AM
Replies: 9
Views: 5,561
Posted By gjs

Poly vinyl acetate/ poly vinyl alcohol

Sounds like a big difference, thanks!
Forum: Scratch Building, Aircraft Design, 3D/CAD
08-20-2003, 10:52 PM
Replies: 2
Views: 653
Posted By gjs

NEW Paint chemically bond to plastics??

TV adds say new paint formulated to bond to plastics. Krylon?

Anyone used it?

If so please spill you guts.
Forum: Composites Fabrication And Repair
08-20-2003, 10:41 PM
Replies: 17
Views: 2,119
Posted By gjs

How do I get a smooth finish on sanded Kevlar cloth?

Anybody tried to burn fuzz off, torch it? Seriously
Forum: Composites Fabrication And Repair
08-20-2003, 09:24 PM
Replies: 28
Views: 13,735
Posted By gjs

Kevlar, Soooo Misunderstood

If you don't appreciate the properties of Kevlar you won't like it.

If you do appreciate kevlar you are more like to have success using it.

If you are forced to try to repair kevlar you will...
Forum: Composites Fabrication And Repair
08-20-2003, 07:52 PM
Replies: 2
Views: 1,855
Posted By gjs

How to custom make carbon fiber/kevlar accesories

Theres a book in bookstores, fiberglass and composite materials by forbes aird ( thick magazine size) thats good. You've got to learn HOW to use them, every situation is different.

Have you seen...
Forum: Composites Fabrication And Repair
08-20-2003, 06:49 PM
Replies: 8
Views: 4,986
Posted By gjs

smaller WLoading

My intent is to add Glass rod to Foam or balsa sheet. Foam to resist buckleing in longerons and Glass caps on two sides of foam to stiffen. ect. ect. My own custom building method aimed at the...
Forum: Composites Fabrication And Repair
08-20-2003, 05:48 PM
Replies: 0
Views: 373
Posted By gjs

glueing to Polyester composite materials

Know any place to buy regular Vinyl Acetate?

I used to buy a hobby/craft glue that was Vinyl Acetate. The brand Im useing now is pukey pink. The other dried Clear/white.

BTW it bonds...
Showing results 1 to 25 of 67
 
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