Shop our Airplanes Products Drone Products Sales
Thread Tools
Apr 04, 2011, 04:54 AM
Use your imagination....
czirh's Avatar
Build Log

Short Skyvan SC-7


I started a new project, Skyvan...
Sign up now
to remove ads between posts
Apr 04, 2011, 05:14 AM
An itch?. Scratch build.
eflightray's Avatar
There are a few Skyvan threads, (around 18), if it helps determine, solve, any problems.

Nice old workhorse.
Apr 04, 2011, 07:04 AM
Use your imagination....
czirh's Avatar
I started fuselage. 3mm balsa, plywood and pine..
Apr 04, 2011, 02:17 PM
Use your imagination....
czirh's Avatar
I drew Corel.. Wingspan: 2m.
Apr 05, 2011, 01:46 AM
Use your imagination....
czirh's Avatar
What airfoil should I use in this model?
Apr 05, 2011, 12:36 PM
Use your imagination....
czirh's Avatar
Fuselage...
Apr 05, 2011, 12:43 PM
Formerly "vonJaerschky"
Wolpertinger's Avatar
Quote:
Originally Posted by czirh
What airfoil should I use in this model?
I don't know what the full size aircraft used. I would choose an airfoil that gave good lift at low speed, something like a NACA2415 which is semi-symmetical, or perhaps even a simple Clark-Y if you prefer a flat bottom airfoil. A Clark YM-15 is a bit thicker and might be a good choice, too.
Apr 05, 2011, 05:23 PM
Long-Time Member
James Frolik's Avatar
I would simply use a Clark-Y profile. That's what was used on the nice design and free plans provided in the German magazine FMT back in 1998, when I built mine.

From you photos, it appears you will have detachable wings. With a 2-meter wing span this might be nice, but most versions (mine has a 1.5m span) have a one-piece wing where the upper fuselage hump deck—the fuel tank on the real plane—is part of a removable wing. This makes construction easier, and the general strength of the wing's mid-section is tougher.

My model uses simple Speed 400/7.2v direct-drive motors with 6x4 props and 7 x NiCd cells. Construction is all balsa and controls are aileron, elevator, rudder, and [brushed| motors. The ESC is a 35A Schulze. I have not flown the model in over 10 years—it simply hangs on display—and therefore have never tried a 2s LiPo pack, but I'm sure it would fly fine with one. The model is very light.
Last edited by James Frolik; Apr 05, 2011 at 05:29 PM.
Apr 05, 2011, 10:55 PM
CEL abuser
To really enhance the scale feel, make sure your model at least smells like Jet A. Bonus points for leaking it and vibrating badly as well.

Oh yeah make sure the tailgate is closed for takeoff!

It's a fun one to jump out of though
Apr 06, 2011, 12:29 AM
Use your imagination....
czirh's Avatar
Thanks for all comments..
Apr 06, 2011, 12:56 AM
Use your imagination....
czirh's Avatar
Wing: 1.5mm balsa over foam and 40gr of glass fabric coating, then paint.

Fuselage : Balsa over 40gr of glass fabric, then paint.

Rudder, elevator: Balsa construction, the normal film coating, then paint.

1 - Any suggestions on the above process?

2 - 8 mini servos will be used. Is it OK to use normal ESC?

Thank you ...
Apr 06, 2011, 09:05 AM
Use your imagination....
czirh's Avatar
Quote:
Originally Posted by vonJaerschky
I don't know what the full size aircraft used. I would choose an airfoil that gave good lift at low speed, something like a NACA2415 which is semi-symmetical, or perhaps even a simple Clark-Y if you prefer a flat bottom airfoil. A Clark YM-15 is a bit thicker and might be a good choice, too.
Yes, Clark-y good idea..
Apr 06, 2011, 09:15 AM
Formerly "vonJaerschky"
Wolpertinger's Avatar
Quote:
Originally Posted by czirh
8 mini servos will be used. Is it OK to use normal ESC?
Thank you ...
Probably not. 8 mini servos will be too much for most ESC's. You will need a seperate BEC, like this or this. Most ESC's have a what is called a linear voltage regulator, and 8 servos would overload them. Some ESC's (Like the Phoenix Ice Series) have a built in switching type regulator, and they can handle more servos.
Apr 06, 2011, 09:20 AM
Use your imagination....
czirh's Avatar
I started the construction of the nose. This is the difficult part for me. I use the lost foam method.
Apr 06, 2011, 01:44 PM
Use your imagination....
czirh's Avatar
Quote:
Originally Posted by vonJaerschky
Probably not. 8 mini servos will be too much for most ESC's. You will need a seperate BEC, like this or this. Most ESC's have a what is called a linear voltage regulator, and 8 servos would overload them. Some ESC's (Like the Phoenix Ice Series) have a built in switching type regulator, and they can handle more servos.
Thank you for your reply. I have got this, but I think deficient...?


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Short Skyvan Plans Vagabond324 Scale Kit/Scratch Built 45 Feb 12, 2017 05:13 PM
Discussion Full scrathbuilt Short Sc-7 skyvan wing span:90" THEYONK Scale Kit/Scratch Built 23 Jan 14, 2017 09:44 PM
Discussion Short Skyvan Warbird@home Scratchbuilt Indoor and Micro Models 3 Feb 21, 2011 11:08 PM
Build Log Short SC-7 Skyvan airkid Scale Kit/Scratch Built 57 Jan 04, 2010 03:36 AM
Discussion SHORT sc7 SKYVAN Aluminium edition weerasakmusyo Scale Kit/Scratch Built 3 Jul 27, 2008 04:44 AM