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Old Nov 28, 2012, 11:49 AM
deltas are cool
AIR SALLY's Avatar
Tehachapi ,CA.
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looking great! what Urethane resin do you use and where did you get it.
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Last edited by AIR SALLY; Dec 10, 2012 at 11:33 PM.
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Old Nov 28, 2012, 12:39 PM
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Thanks

A-R Products 1562 907-7707, Norwalk, Ca.. It is a Smooth-On product. Check their site. More stuff to mold on there.

I use Smooth-On 300 for the urethane resin casting. Similar to "Alumalite", if not exactly the same material.

Steve
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Old Nov 29, 2012, 12:24 AM
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We are both very close to being ready for glass....cant wait
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Old Nov 30, 2012, 07:48 PM
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This is what happens when I over estimate my talent. It just takes longer to get there.

The right thing to have done is to fabricate the entire gun detail and then attach to fuse.

The orange part is a large drinking straw.

Steve
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Old Dec 01, 2012, 12:06 PM
DELTAS RULE
corsair nut's Avatar
tehachapi, CA
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man, id be interested in some glass parts! its looking awesome!
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Old Dec 08, 2012, 06:09 PM
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So I tried to make the gun as part of the fuse. This what I came up with. Not what I had in mind. I will make a more accurate urethane casting and glue it to the fuse later. Between my friends and I, we have enough models to speed things up at times for some details. Like the vents behind the nose gear. these are urethane resin castings off a buddies jet. And cut as needed.

Next V-stab detail and mold. I hope.

Steve
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Old Dec 08, 2012, 10:03 PM
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Nice!...so do we need to pay royalities to BVM for the vents..Ha
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Old Dec 10, 2012, 09:21 PM
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The V-stab. A few pics. Too bad the H-stab covers so much of the details. I will try to put the V-stab LE detail. Its like a solid alum section.

Will probably put detail on the H-stab.

The small diagonal line on some of the larger panels are added due to tape not being wide enough. Those will be gently sanded out of the mold.

The bottom faring may get tricky.



Steve
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Old Dec 10, 2012, 10:23 PM
Lori, hey, you're home early
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United States, NJ, Trenton
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That is awesome. The surface irregularities of the foil tape are going to give this bird a very nice look. This won't look like a scaled up plastic model.

Where do you propose to mount the fan? Will it be just below the tail to keep the efflux/thrust line parallel to the centerlines?
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Old Dec 10, 2012, 11:21 PM
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Wherever the variable tail cone will work best. The glass fuse will have good room for adjustment..

Steve
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Old Dec 10, 2012, 11:37 PM
deltas are cool
AIR SALLY's Avatar
Tehachapi ,CA.
Joined Apr 2006
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there is a crash site about a mile from where im sitting ,there was a huge piece of the H stab that survived ...i might go take a look at it tomarrow .i've also been to yeagers NF-104 crash site ....i still found some small pieces of it ...and a lot of old beer cans ,the kind you had to use a can opener on .they had to get the airmen out there some how
i think your going to need that up thrust...the sabb Draken has that too ,when i build my 70mm depron draken i used the angle and it flies very nice ,no pitch change with throttle.the c/g is pretty far fwd on the 104 so it needs the thrust angle ....at least thats my 2 cents
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Old Dec 11, 2012, 12:44 AM
DELTAS RULE
corsair nut's Avatar
tehachapi, CA
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sucha awesome project, and your really doing it right!
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Old Dec 11, 2012, 09:15 AM
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Quote:
Originally Posted by AIR SALLY View Post
there is a crash site about a mile from where im sitting ,there was a huge piece of the H stab that survived ...i might go take a look at it tomarrow .i've also been to yeagers NF-104 crash site ....i still found some small pieces of it ...and a lot of old beer cans ,the kind you had to use a can opener on .they had to get the airmen out there some how
i think your going to need that up thrust...the sabb Draken has that too ,when i build my 70mm depron draken i used the angle and it flies very nice ,no pitch change with throttle.the c/g is pretty far fwd on the 104 so it needs the thrust angle ....at least thats my 2 cents
Thanks Guys.

New 104 crash site coming soon. I figure the first few may be quick polyester lay ups.

I hate when the plane changes pitch with the throttle!

Steve
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Old Dec 13, 2012, 12:26 PM
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A mistake I made on my aluminum Vstab panels in previous pics of stab.

Forgot.

On the first side of vstab I put the alum tape on the model first, then rivet detail. Not a good way to do it on a foam plug. Too soft, especially since I did not glass that section. It"s just cover with wall patch. Plus one cannot use a ruler easily to guide the rivets.

The way I normally do it is rivet detail frist, then apply. This gives better lines and does not dent the model. Some models have dented skin, but the 104 is really not one of them according to the one at Chino.

I'm only using individual panels due to the smaller pieces being easier to apply, or remove if you screw up.

All will transfer well into the molds. Even the screw ups.

Screws are made with an old mechanical pencil, and rivets are maid with a pounce wheel.

Paint and weathering will decide how much of it shows ultimately.

Steve
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Old Dec 14, 2012, 01:34 PM
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The other side.

I damaged the bottom tip of the rudder. After it's fixed I'll put the alum and piano hinge detail on.

Then a few other things and mold.

Steve
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