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« Reply #25 on: July 04, 2017, 10:47:14 AM »
prabal276
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One step at a time :)



The tips of the skysurfer wings are raised.
That's what makes it stable.
Someone recently posted that cutting the tips away makes it sporty.
For a scale appearance , you will have to make a tip~less wing.
So you should have an sporty wing.
Piper Cubs do have a tendency to tip stall and you need to get the thrust and thrust angle just right otherwise it is a mess. I had built one some time before. It was a mess
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« Reply #26 on: July 04, 2017, 10:49:06 AM »
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One step at a time :)



Go for an normal flat bottom airfoil in the middle and make the tips under cambered. Just like Josh bixler does on his FT spitfire.
That should prevent tip stalls.
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« Reply #27 on: July 04, 2017, 08:11:21 PM »
wingmanbunty
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prabal thanks for the information ,  Josh bixler is great guy dedicated to rc i really like the ft simple cub i am trying to use the colour combination from that. Also i like their landing gear design.

https://s8.postimg.org/b5k77w5np/cq1.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s15.postimg.org/a98k6m9kb/cq2.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s24.postimg.org/c3af8y751/cq3.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.
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« Reply #28 on: July 04, 2017, 08:19:04 PM »
wingmanbunty
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Actually i build coro fuselage along with wings so please donít mind these are old pictures.
https://s9.postimg.org/y6osqbmzj/cq4.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s2.postimg.org/i9n7r8eqx/cq6.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s9.postimg.org/t9b857l0f/cq5.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.
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« Reply #29 on: July 05, 2017, 10:17:14 AM »
prabal276
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One step at a time :)



nice going!
elevator is drooping in the last picture....
haven't glued yet?
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« Reply #30 on: July 07, 2017, 08:57:32 AM »
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work on elevator section.
https://s9.postimg.org/wubifniun/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s14.postimg.org/okzexp5nl/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s13.postimg.org/zdnj3pf4n/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.
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« Reply #31 on: July 07, 2017, 09:00:07 AM »
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https://s22.postimg.org/foyouh8c1/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s22.postimg.org/99obg7ojl/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s21.postimg.org/wae62zm5j/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.
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« Reply #32 on: July 08, 2017, 05:48:38 PM »
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construction of hinges using mango wood strip, empty pen rifill.
https://s13.postimg.org/cuyma0s13/k21.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s17.postimg.org/ui2n2r5hb/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s10.postimg.org/nhid8j2ih/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.
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« Reply #33 on: July 08, 2017, 05:50:47 PM »
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https://s18.postimg.org/myar6wruh/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s9.postimg.org/5xv9hta5b/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s24.postimg.org/nibwn1q51/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.
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« Reply #34 on: July 08, 2017, 05:52:02 PM »
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https://s10.postimg.org/407abr55l/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.
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« Reply #35 on: July 08, 2017, 05:58:41 PM »
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installation of electronics and control links using high gauge wire , fan rewinding cover pipes .
https://s9.postimg.org/m2nln6xfz/fan.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s22.postimg.org/a1wwrjx8x/pipe1.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s24.postimg.org/r10l0595h/c10.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.
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« Reply #36 on: July 08, 2017, 06:00:14 PM »
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https://s9.postimg.org/9e84ykh4f/20170705_142223.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s2.postimg.org/6ew5woqw9/20170705_142327.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s14.postimg.org/tkcvqxhmp/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.
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« Reply #37 on: July 08, 2017, 08:01:00 PM »
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elevator control link.
https://s24.postimg.org/8cjysf65x/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s12.postimg.org/ibmfubje5/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s17.postimg.org/a1v7wnr27/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.


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« Reply #38 on: July 08, 2017, 08:01:54 PM »
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https://s11.postimg.org/rg8njes9v/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.
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« Reply #39 on: July 08, 2017, 09:36:14 PM »
prabal276
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One step at a time :)



good going!
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« Reply #40 on: July 08, 2017, 09:39:27 PM »
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Thanks
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« Reply #41 on: July 08, 2017, 09:50:23 PM »
prabal276
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One step at a time :)



When do you plan to maiden it?
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« Reply #42 on: July 08, 2017, 10:38:14 PM »
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I posted the modified version of Sky Surfer by cutting the tips away. Please note my intention was that if u are tired of flying the stable plane u can cut off the tip and u will find that it will be difficult to control it and it will give similar challenges for flying as in sports plane or more.
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« Reply #43 on: July 09, 2017, 11:23:37 AM »
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prabal
i think maiden will be next weekend.
unidrakeshrc
Please share the link I will be very happy to know about it . I really want to know how sky surfer behave after cutting the tips. Do you have video?
Also share your experience of tip stall. Piper cub is I think is most beautiful airplane. What I had done is it has plane bottom wing profile and i had adapted wing profile of sky surfer. I had given enough dihedral for wings. It will be interesting to predict how airplane is going to behave, please share your views.
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« Reply #44 on: July 10, 2017, 07:07:31 PM »
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Hi Wingman! Thanks for showing your interest.
http://www.rcindia.org/chatter-zone/convert-your-sky-surfer/msg273529/#msg273529
I have posted the pictures in the link. Yeah at the beginning I did face Tip Stall, but after slight adjustments in the aeliron servos I was able to solve the problem. Please also see the profile of the wings that I have maintained. I have not recorded any video, however I will post them soon.
I have seen your pictures of your wing. I personally think there may be a lift problem, however it will fly.
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« Reply #45 on: July 10, 2017, 07:48:53 PM »
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@unidrakeshrc
thanks for the info how is the glide of the aircraft after this modification
i design this profile because of the glide of the airplane , if there is lift problem in the wing i have to redesign it and apply plain wing at the bottom.
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« Reply #46 on: July 10, 2017, 08:30:37 PM »
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construction of landing gear using bicycle spoke .
https://s3.postimg.org/65up3uw9f/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s4.postimg.org/yjna8whzh/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s10.postimg.org/u9k7xwubd/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.
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« Reply #47 on: July 10, 2017, 08:32:06 PM »
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https://s23.postimg.org/anq2bnf23/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s2.postimg.org/7wdl07uy1/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s24.postimg.org/d8s3gpcmd/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.
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« Reply #48 on: July 10, 2017, 08:33:39 PM »
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https://s11.postimg.org/riavm49bn/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s14.postimg.org/tsl6v81dd/l10.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s1.postimg.org/kwarzoxhr/l11.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.
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« Reply #49 on: July 10, 2017, 08:34:51 PM »
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https://s10.postimg.org/jcfrz08ft/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.

https://s17.postimg.org/g4ywu5rj3/image.jpg
Piper cub using coro sheet , thermocol, wood, bamboo sticks.
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