Sloper made from Depron - RC Groups
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Nov 12, 2008, 01:32 AM
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ultralajt's Avatar
Build Log

Sloper made from Depron


Hi!

I decided to build a small compact glider for the slopes, that will be made from depron.


Parts from 3 and 5 mm thick depron



Edges of cockpit are reinforced with a wood strip.



Test fit of the fuselage ribs.



Forward part of the fuselage.



One drinking straw on the bottom for the RX antenna and one bowden for the elevator on top of rear fuselage part. Both holding in place with a fuselage former.



Sanded all fuselage edges and nose rounded to proper shape.



Wing construction using double sided self adhesive tape.
Spruce spar and depron ribs.





Finished model.


Maiden flight:
Depron glider (3 min 46 sec)


It was allmost no wind, so I am waiting for the proper weather to test the model completely and find out its real and practical flight envelope.

Mitja
Last edited by ultralajt; Nov 12, 2008 at 08:34 AM.
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Nov 12, 2008, 01:48 AM
TEAM OZSKUNKWORX
r/c junkie's Avatar
Thats sweet dude good work.

Shane
Nov 12, 2008, 03:16 AM
Needs more moose!
That's SICK! Any plans? I'd love to have a go at one myself
Nov 12, 2008, 10:46 AM
Registered User
?????
All up weight
Wing area
Servoes used
Rx
Battery etc etc
Nov 12, 2008, 10:59 AM
Registered User
ultralajt's Avatar
Quote:
Originally Posted by ktoey
?????
All up weight
Wing area
Servoes used
Rx
Battery etc etc
All up weight ~200g without ballast (7 oz)
Wing span 114cm (44,88")
Length 80 cm (31,5")
Wing area 17,23 dm2
Root airfoil thicknes 6,3%
Tip airfoil thicknes 8,5%

Servos HXT900...HS55...or similar
RX Corona synthesized 4 CH
Battery 4x NimH 350 AAA
Last edited by ultralajt; Nov 12, 2008 at 11:29 AM.
Nov 12, 2008, 11:31 AM
Registered User
ultralajt's Avatar
Some landings...yesterday late evening....:
A bunch of landings (1 min 9 sec)


But I still waiting the wind...
Nov 12, 2008, 11:49 PM
Next time I'll ARTF...
glydr's Avatar

Nice !!


Another Mitja - must build. This one will probably go in front of the guppy!

Thanks again!

Graham
Nov 13, 2008, 01:29 AM
Registered User
rockbus's Avatar
Nice design. Do you have plans????
Nov 13, 2008, 01:35 AM
Registered User
ultralajt's Avatar
Quote:
Originally Posted by rockbus
Nice design. Do you have plans????
My plans so far are that my friend will prepare CNC laser cutted parts and sell them as a KIT version including all other materials (wooden strips, elevator bowden, controll horns...)

I will think about publishing the plans for free later... maybe in january 09.

Mitja
Nov 13, 2008, 02:04 AM
skumgummi dave
Mitja:

Beautiful sloper. Would like to build if/when plans are released.

Dave-
Nov 16, 2008, 11:39 AM
Registered User
ultralajt's Avatar
As weather dont permit me to fly on the slope to shot some videos, I started to prepare the assembly manual.
I made allmost all drawings of assembly process....

Assembly is easy...like making a toy from Lego....






Mitja
Nov 17, 2008, 12:43 AM
Registered User
ultralajt's Avatar
As this glider is made from depron, and building thread is inclined more to the construction material and less to the flying ambient (slope), I moved to the section Foamies (Scratchbuilding):

https://www.rcgroups.com/forums/show...0#post10956509


If I eventually catch some nice video on the slope, I will post it allso here.

Mitja
Nov 20, 2008, 09:25 AM
Registered User
ultralajt's Avatar
A video taken today!

At last a proper WIND!!

Depron Sloper on its first wind.avi (9 min 58 sec)



Mitja
Nov 20, 2008, 10:34 AM
Registered User
Ward Hagaman's Avatar
Very Nice!
Nov 21, 2008, 06:16 PM
Plank addicted
Marcos Quito's Avatar
Hi,

Has anyone told you to put some more nose weight ?
Appearently it´s tail heavy.

You´ll be able to fly with much more control.


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