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Caravan 1/2 A

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Caravan 1/2 A

Post  jmcalata on Fri Apr 29, 2016 5:04 pm

Here is the plan of my new project.



Vintage american motorglider configuration wasalmost like tandem wing with big stab and center of gravity about 70% very stable


Last edited by jmcalata on Fri Apr 29, 2016 5:34 pm; edited 1 time in total
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Square fuse

Post  jmcalata on Fri Apr 29, 2016 5:21 pm

Building square fuse it´s not complicated, not necessary paper plan copy scale 1:1

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Re: Caravan 1/2 A

Post  duke.johnson on Fri Apr 29, 2016 11:35 pm

Very cool. I love free flight.
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Re: Caravan 1/2 A

Post  MauricioB on Fri Apr 29, 2016 11:42 pm

Jose Excellent !, I will be visiting the post sharing your progress! ... A hug, Mauricio Thumbs Up .-
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Re: Caravan 1/2 A

Post  KariFS on Sat Apr 30, 2016 1:18 am

Nice! I like those pylon style models too. Are you going free flight or radio assist?
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Re: Caravan 1/2 A

Post  OVERLORD on Sat Apr 30, 2016 1:57 am

Hi José, looking forward to the build. Will you install a timer?
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Re: Caravan 1/2 A

Post  jmcalata on Sat Apr 30, 2016 3:44 am

Thanks for your comments friends.  I Love This Forum!

Yes, I also love very much "free flight" over all categories.  cheers

I think is a pure art. Trimming airplane to circling thermals.   sunny

But today at XXI Century better radio-assisted  RC Plane  because here there are many trees roads and railway close.  Sad

But normally I don´t touch transmiter during the flight but is to bring him or avoid an accident.

I just enjoy seeing flies free lying on the floor.  Popcorn



We have several vintage motorgliders.

Two super high pylon wing "Timer´s Nightmares" of Frank Ehling





https://www.coxengineforum.com/t1325-timers-nightmare-frank-ehling-1942

The "Frisco Kid" of John Tatone very similar to this Caravan.





https://www.coxengineforum.com/t1374-frisco-kid-john-tatone-1955

And "Engendrus" a personal design home-made with recycled free fligh gliders parts and powered  Small Cox Logo  Tee dee .020.





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Re: Caravan 1/2 A

Post  jmcalata on Sat Apr 30, 2016 4:08 am

I want to buid the Caravan strongest than Frisco and Nightmare, they are very light and low weight for quite weather, and I want the Caravan for fligh in all conditions.  Airplane

If Small Cox Logo Babe Bee .049 .049 it is not enaugh  power to clim higher and fast, I could mount a big engne OK .074 with auxiliar tank into the fuse and Tatone timer to cut fuel to practice vertical takeoff "V-tol".   affraid



Now assembling the fuselage, note the top and bottom veneer with cross grain to improve the torsional strength and two steel wires 1/32" diameter transmission for rudder and elevator.



Last edited by jmcalata on Sat Apr 30, 2016 4:12 am; edited 4 times in total (Reason for editing : Language always spelling corrections)
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Re: Caravan 1/2 A

Post  jmcalata on Sun May 01, 2016 4:23 pm

The fuselage and the rudder will be covered with very bright colors



I have made a modification to the plan and I build the wingtips trapezoidally



I used wooden harder in the central wing panels as they work to greater bending stresses.


Last edited by jmcalata on Sun May 01, 2016 4:31 pm; edited 1 time in total
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Dihedral joint

Post  jmcalata on Sun May 01, 2016 4:30 pm

It is very important to make a good joint wing panels, I used dihedral reinforcement ply sheets on all spars.





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Wing

Post  jmcalata on Mon May 02, 2016 4:21 pm

Gluing dihedral joints



Wing finished ready to cover



Horizontal stabilizer is very easy (no dihedral joints).


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Re: Caravan 1/2 A

Post  jmcalata on Tue May 03, 2016 2:37 am

I use clear oracover at centre wing panel because oracover is strong, and blue clear oralight at tips wing panels.



Wing weight 125 g (4,41 oz) span 1130 mm (44,5 ") coord 190 mm (7,5 ")


Last edited by jmcalata on Tue May 03, 2016 3:53 pm; edited 1 time in total
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Re: Caravan 1/2 A

Post  OVERLORD on Tue May 03, 2016 3:33 am

Looks great!!
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Re: Caravan 1/2 A

Post  fit90 on Tue May 03, 2016 7:41 am

Beautiful work! It looks super. I bet it flies really well.
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Re: Caravan 1/2 A

Post  pkrankow on Tue May 03, 2016 2:31 pm

dihedral can be a trip to glue right. Looks good. I like the colors.

Phil
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Horizontal stabilizer

Post  jmcalata on Tue May 03, 2016 2:43 pm

Thank you for your comments. I'm glad you like it, someone knows the name of the designer ???


I choose vivid, bright and colorful and above all visible colors height, flourescent is the most visible.



High visibility can make the difference between seeing or not seeing it.   RC Plane



Although I have built a larger elevator to desthermalizer tilting 45 degrees with servo.
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Re: Caravan 1/2 A

Post  jmcalata on Tue May 03, 2016 4:54 pm

Flying surfaces covered



Fixing system of the horizontal stabilizer with rubber bands



Hole between stab and elevator to put rubber bands

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Babe bee .049

Post  jmcalata on Wed May 04, 2016 8:37 am

I mount this Babe bee .049, it has a shim at botom cylinder, I think to remember it was to modify timming to use larger props ?

Anyone can confirm it to me?





At first, I mount this plastic yellow 6x3 " ... if don´t pull enough ... I can change by grey 7x3,5" to increase thrust.  Babe Bee

If it is not plenty power ...  I will mount this Tee dee .049

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Re: Caravan 1/2 A

Post  jmcalata on Thu May 05, 2016 6:40 am

Finished



Ready to fly





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Re: Caravan 1/2 A

Post  pkrankow on Thu May 05, 2016 8:30 am

I'm not sure how I feel about the checkerboard fuselage... Then again it is YOUR plane. In any case that is a good looking plane.

Clapping

Nicely done!

Phil
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Re: Caravan 1/2 A

Post  jmcalata on Thu May 05, 2016 10:36 am

Thank you Phil, may 2016 is the Small Cox Logo Chess month lol!



Check Mate ! Small Cox Logo Reds win !



This afternoon I flew it for the first time, I could not wait any longer ...  sleep

Tonight upload Youtube video maiden flight.  lol!  affraid



Sad Goodbye
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Re: Caravan 1/2 A

Post  fit90 on Thu May 05, 2016 2:40 pm

Looks great! I am looking forward to watching the video.
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Re: Caravan 1/2 A

Post  jmcalata on Fri May 06, 2016 2:45 am

Here´s the Caravan stressfull maiden flight video.  RC Plane  lol!



I´m still tired .. Warm Warm Warm

JMCalata sunny Spain
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Re: Caravan 1/2 A

Post  OVERLORD on Fri May 06, 2016 3:47 am

That's a fantastic video José: innocent beginning followed by suspense and a happy end ; all with dramatic Wagner!!

Glad you found the plane back.
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Re: Caravan 1/2 A

Post  Oldenginerod on Fri May 06, 2016 3:54 am

It does teach us a lesson.  Don't assume that you remembered everything.  affraid  Always do a pre-flight check of your controls. Airplane
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Re: Caravan 1/2 A

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