SZD - 36 Cobra 15 1:3 scale

Let us all watch your new project progress.
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skyhawk92
Posts: 115
Joined: 20 Jan 2017, 06:47
Location: Domzale

SZD - 36 Cobra 15 1:3 scale

Post by skyhawk92 » 26 Jan 2017, 07:14

Hi,

I started a thread on RCGroups, but one of the members convinced me to make one here too, so I'll copy to here what's been done so far.


Some time ago, I became interested in this glider, that is why I decided to show building process of it in 1 : 3 scale. Building style will be something new for many of you, especially design of the wings. Some things I'll try for the first time myself.

You can find some other airplanes I posted, build with this style here(probably you won't understand text , but there are pictures) http://forum.modelarji.com/viewtopic.php?f=29&t=66582
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skyhawk92
Posts: 115
Joined: 20 Jan 2017, 06:47
Location: Domzale

Re: SZD - 36 Cobra 15 1:3 scale

Post by skyhawk92 » 26 Jan 2017, 07:15

First I decided to make wing supporters, so that epoxy will harden enough before I would need them.
Because it is not worth to make molds for one or two models, I made things differently.
I glued drawings of wing supporters on plywood and covered everything with transparent tape, so that epoxy doesn't stick on it.
I made edges from balsa and also covered them with tape and glued everything together with few drops of instant glue.
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skyhawk92
Posts: 115
Joined: 20 Jan 2017, 06:47
Location: Domzale

Re: SZD - 36 Cobra 15 1:3 scale

Post by skyhawk92 » 26 Jan 2017, 07:16

For reduced weight, I inserted triangular piece of balsa, which will stay inside. I fill supporter alternately with fibers and roving TEX2400 then saturated it with epoxy.
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skyhawk92
Posts: 115
Joined: 20 Jan 2017, 06:47
Location: Domzale

Re: SZD - 36 Cobra 15 1:3 scale

Post by skyhawk92 » 26 Jan 2017, 07:16

I placed a piece of plexiglass on everything and weighted it down. (I used a toolbox with 20 kg of LiPo batteries )
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skyhawk92
Posts: 115
Joined: 20 Jan 2017, 06:47
Location: Domzale

Re: SZD - 36 Cobra 15 1:3 scale

Post by skyhawk92 » 26 Jan 2017, 07:29

Fuselage ribs are cut and placed on the plan.
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skyhawk92
Posts: 115
Joined: 20 Jan 2017, 06:47
Location: Domzale

Re: SZD - 36 Cobra 15 1:3 scale

Post by skyhawk92 » 26 Jan 2017, 07:33

I started gluing slats of balsa on tail. So far I always made tail separately, but here I will make it together with fuselage, so I will have enough room for servos and elevator links.
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skyhawk92
Posts: 115
Joined: 20 Jan 2017, 06:47
Location: Domzale

Re: SZD - 36 Cobra 15 1:3 scale

Post by skyhawk92 » 26 Jan 2017, 07:33

I glue slats on both sides alternately.
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skyhawk92
Posts: 115
Joined: 20 Jan 2017, 06:47
Location: Domzale

Re: SZD - 36 Cobra 15 1:3 scale

Post by skyhawk92 » 26 Jan 2017, 07:34

A bit of progress...
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skyhawk92
Posts: 115
Joined: 20 Jan 2017, 06:47
Location: Domzale

Re: SZD - 36 Cobra 15 1:3 scale

Post by skyhawk92 » 26 Jan 2017, 07:35

Few more slats glued...
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skyhawk92
Posts: 115
Joined: 20 Jan 2017, 06:47
Location: Domzale

Re: SZD - 36 Cobra 15 1:3 scale

Post by skyhawk92 » 26 Jan 2017, 07:35

All slats glued and surface evenly sanded.
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