Hi everyone I am building my new park flyer which is a piper cub material I am using is Coro sheet for
Fuselage construction and ordinary packing thermocol for wing construction, I assume weight of the plane is around 350 -400 grms , plan is taken from outerzone . i am trying to use my own handmade wooden propeller for this plane , earlier test on the propeller showing it create some vibration as it is very difficult to maintain equal pitch on both side , I am trying to improve the quality of my wooden prop .i am mango wood for the propeller
plan on the screen scale to 40 percent size and copy on the paper
(https://s2.postimg.org/7a76np4jt/IMG_20170617_184552.jpg) (https://postimg.org/image/4g41a92dh/)
(https://s8.postimg.org/k9dqqoxhh/IMG_20170617_190919.jpg) (https://postimg.org/image/3ydmudkzl/)
(https://s8.postimg.org/n85rptas5/IMG_20170617_192356.jpg) (https://postimg.org/image/vqf7u5hap/)
Seems an interesting project, good luck :thumbsup:
What will be the other specifications (besides weight)
Sir ji i am using 1780kv motor ,2s900 mah lipo battery, two 9grm servo, and a 40 amp esc because
Its heavy ,so adding some nose weight , if it will be to heavy i will replace it with 18 or 20 amp esc , measurements are in the pictures
(https://s1.postimg.org/5waurykwf/20170630_152252.jpg) (https://postimg.org/image/lhs6bwwuj/)
(https://s2.postimg.org/c6023tw7t/20170630_152209.jpg) (https://postimg.org/image/52s6o7qs5/)
(https://s17.postimg.org/vy9ijtgv3/drawing.jpg) (https://postimg.org/image/vy9ijtguz/)
(https://s1.postimg.org/694fuagi7/20170630_152425.jpg) (https://postimg.org/image/44k2t7evf/)
wings
(https://s1.postimg.org/wszts5xfz/20170630_161101.jpg) (https://postimg.org/image/55n4e2c97/)
(https://s9.postimg.org/96o80gzu7/20170630_161234.jpg) (https://postimg.org/image/rz0341w8b/)
piper cub is having plain wing area underside the wing , but i am trying the wing profile of the skysurfer .copy the wing profile on paper and glue it on the both side of thermocol .
(https://s9.postimg.org/qwyl5vgov/wing-profile.jpg) (https://postimg.org/image/mntv3pdff/)
(https://s4.postimg.org/bcmtbuhot/ewrwerewr.jpg) (https://postimg.org/image/ejhcvh24p/)
(https://s16.postimg.org/zff0tt8d1/IMG_20170618_110954.jpg) (https://postimg.org/image/6ps4x64cx/)
(https://s10.postimg.org/6rz8mrh8p/IMG_20170618_101558.jpg) (https://postimg.org/image/4nevloflx/)
(https://s3.postimg.org/ywtbbvlcj/IMG_20170618_101603.jpg) (https://postimg.org/image/iykllqr4f/)
(https://s12.postimg.org/434cfaq1p/IMG_20170618_102504.jpg) (https://postimg.org/image/k1d25fk9l/)
(https://s7.postimg.org/hmyvf2qu3/IMG_20170618_114708.jpg) (https://postimg.org/image/z095txm53/)
(https://s7.postimg.org/hf6f1np3f/yutuytu.jpg) (https://postimg.org/image/5q2fdoy4n/)
(https://s8.postimg.org/4xlz2vb1h/dfsdf.jpg) (https://postimg.org/image/r9jrw9a5d/)
(https://s16.postimg.org/fmveeobjp/IMG_20170618_171453.jpg) (https://postimg.org/image/gce6r1c35/)
(https://s21.postimg.org/y9pece4xz/kjjhihi.jpg) (https://postimg.org/image/j0zgymb9f/)
(https://s16.postimg.org/sezdv3ih1/yoiiuoi.jpg) (https://postimg.org/image/9zewxp4ch/)
Good going!
http://www.rcindia.org/electric-planes/wings-of-thermacol/msg272654/#msg272654
Thanks prabal
Kantesh very beautiful design please show some more information about your construction
I am using bamboo spar on the the upper and the lower surface and finally 3" packing tape for reinforcement .
(https://s21.postimg.org/51qtmhb13/IMG_20170628_170312.jpg) (https://postimg.org/image/x1ux6rehf/)
(https://s22.postimg.org/gv95ztp1t/IMG_20170629_113917.jpg) (https://postimg.org/image/4tds5oft9/)
(https://s18.postimg.org/xp0f24hxl/we2312.jpg) (https://postimg.org/image/i3j3i65z9/)
(https://s4.postimg.org/45112jjp9/qw12312.jpg) (https://postimg.org/image/6mcs9t3ll/)
(https://s17.postimg.org/j8szqa5v3/fgdfgdfgdfg.jpg) (https://postimg.org/image/7wge8hx63/)
(https://s2.postimg.org/l5906q0x5/dfgdgdfg.jpg) (https://postimg.org/image/8duu07r51/)
I made this
See this
Use wooden
thanks prabal
very nice build kantesh {:)} {:)}
lamination with 3" packing tape
(https://s23.postimg.org/q7xmid3yj/lamination1.jpg) (https://postimg.org/image/854jr583r/)
(https://s15.postimg.org/tmlqaoe3v/lamination2.jpg) (https://postimg.org/image/gig5xzm1z/)
(https://s16.postimg.org/l446xcpxh/lamination3.jpg) (https://postimg.org/image/r51vufcjl/)
use a hotwire for the wings.
Gives better results
Tell me specifications of ur wings only like waight and size
Around 95 cm span and 14 cm chord.
It's styrofoam so weight would be around 100 gms for the wing with the tape. Add some more for the spar.
I also made winds 40x6 inch and waight is 130gram
Yes we are getting very nice finish if we are using hot wire cutting , but i hand carved the wing
Anybody have some idea about the technical detail of the wing profile and performance of the skysurfer wings because i copy it in my piper cub wing.
(https://s13.postimg.org/7dxpuzw87/image.jpg) (https://postimg.org/image/us5p6xe5f/)
(https://s14.postimg.org/8zau91435/image.jpg) (https://postimg.org/image/nv9dgmfhp/)
(https://s13.postimg.org/wh0n7tuhz/image.jpg) (https://postimg.org/image/j03ooyk6b/)
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
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.
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) (https://postimg.org/image/9qimj64kh/)
(https://s15.postimg.org/a98k6m9kb/cq2.jpg) (https://postimg.org/image/mnvc6y12f/)
(https://s24.postimg.org/c3af8y751/cq3.jpg) (https://postimg.org/image/qz8ygjijl/)
Actually i build coro fuselage along with wings so please don't mind these are old pictures.
(https://s9.postimg.org/y6osqbmzj/cq4.jpg) (https://postimg.org/image/t81absj6j/)
(https://s2.postimg.org/i9n7r8eqx/cq6.jpg) (https://postimg.org/image/za63zwrs5/)
(https://s9.postimg.org/t9b857l0f/cq5.jpg) (https://postimg.org/image/55kggx2jf/)
nice going!
elevator is drooping in the last picture....
haven't glued yet?
work on elevator section.
(https://s9.postimg.org/wubifniun/image.jpg) (https://postimg.org/image/vf9xqxhrf/)
(https://s14.postimg.org/okzexp5nl/image.jpg) (https://postimg.org/image/w0yojhtct/)
(https://s13.postimg.org/zdnj3pf4n/image.jpg) (https://postimg.org/image/cc6xxyfgz/)
(https://s22.postimg.org/foyouh8c1/image.jpg) (https://postimg.org/image/nhpcmgeb1/)
(https://s22.postimg.org/99obg7ojl/image.jpg) (https://postimg.org/image/6sck8y4n1/)
(https://s21.postimg.org/wae62zm5j/image.jpg) (https://postimg.org/image/anz5lynkz/)
construction of hinges using mango wood strip, empty pen rifill.
(https://s13.postimg.org/cuyma0s13/k21.jpg) (https://postimg.org/image/lpzgkjgtf/)
(https://s17.postimg.org/ui2n2r5hb/image.jpg) (https://postimg.org/image/6r39kn5a3/)
(https://s10.postimg.org/nhid8j2ih/image.jpg) (https://postimg.org/image/6gzgzuph1/)
(https://s18.postimg.org/myar6wruh/image.jpg) (https://postimg.org/image/essp8r3lh/)
(https://s9.postimg.org/5xv9hta5b/image.jpg) (https://postimg.org/image/m8vde4mmz/)
(https://s24.postimg.org/nibwn1q51/image.jpg) (https://postimg.org/image/o7uozeqoh/)
(https://s10.postimg.org/407abr55l/image.jpg) (https://postimg.org/image/nutbxvkd1/)
installation of electronics and control links using high gauge wire , fan rewinding cover pipes .
(https://s9.postimg.org/m2nln6xfz/fan.jpg) (https://postimg.org/image/vafu3w4i3/)
(https://s22.postimg.org/a1wwrjx8x/pipe1.jpg) (https://postimg.org/image/6iaz1quj1/)
(https://s24.postimg.org/r10l0595h/c10.jpg) (https://postimg.org/image/rdrz6brf5/)
(https://s9.postimg.org/9e84ykh4f/20170705_142223.jpg) (https://postimg.org/image/epn1ja36z/)
(https://s2.postimg.org/6ew5woqw9/20170705_142327.jpg) (https://postimg.org/image/rojs7j76t/)
(https://s14.postimg.org/tkcvqxhmp/image.jpg) (https://postimg.org/image/7xxv9wj25/)
elevator control link.
(https://s24.postimg.org/8cjysf65x/image.jpg) (https://postimg.org/image/hx3lfavht/)
(https://s12.postimg.org/ibmfubje5/image.jpg) (https://postimg.org/image/6z9ucjap5/)
(https://s17.postimg.org/a1v7wnr27/image.jpg) (https://postimg.org/image/le7tefzqz/)
(https://s11.postimg.org/rg8njes9v/image.jpg) (https://postimg.org/image/un3731cpr/)
good going!
Thanks
When do you plan to maiden it?
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.
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.
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.
@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.
construction of landing gear using bicycle spoke .
(https://s3.postimg.org/65up3uw9f/image.jpg) (https://postimg.org/image/mtm76cr0v/)
(https://s4.postimg.org/yjna8whzh/image.jpg) (https://postimg.org/image/7ykrdcfm1/)
(https://s10.postimg.org/u9k7xwubd/image.jpg) (https://postimg.org/image/oy5bd788l/)
(https://s23.postimg.org/anq2bnf23/image.jpg) (https://postimg.org/image/wmwgyuvw7/)
(https://s2.postimg.org/7wdl07uy1/image.jpg) (https://postimg.org/image/ldajj359h/)
(https://s24.postimg.org/d8s3gpcmd/image.jpg) (https://postimg.org/image/3o8gttna9/)
(https://s11.postimg.org/riavm49bn/image.jpg) (https://postimg.org/image/c9ky8cfn3/)
(https://s14.postimg.org/tsl6v81dd/l10.jpg) (https://postimg.org/image/sqb0coijx/)
(https://s1.postimg.org/kwarzoxhr/l11.jpg) (https://postimg.org/image/3vrvr0kgb/)
(https://s10.postimg.org/jcfrz08ft/image.jpg) (https://postimg.org/image/f3b1wu56d/)
(https://s17.postimg.org/g4ywu5rj3/image.jpg) (https://postimg.org/image/w37mkalqz/)
Is that propellor reversed?
And is that handmade?
yes prabal this is hand made propeller , it is made of mango wood and totally hand crafted by me, i had tested these propellers , it is not reversed as it seem from the picture. actually i am still working on these propellers they are not totally successful , first i am not able to maintain equal pitch on both side that's why they create some vibration and approx 50 grms of less thrust as compare to plastic props, i had flown my airplanes using these hand made props with success , i am improving , i want to use it in this model ,if all up weight of the airplane not exceed 250 grms. i want 1:1 thrust to weight . let's see how it goes......
as i said, the piper cub is a very sensitive model to thrust and thrust angle.
mine was over powered and i gave 2 degree down thrust.
Even though that, all it wanted to do was to loop.
keep an 4 degree downthrust and use 50% throttle for maiden.
reduce elevator throws and add -ve expo
okay
@wingmanbunty
That is awesome project. You have lots of patients and skill. You made the whole wing by sanding it with hand and handmade propeller too, I am amazed. I really appreciate your work. Waiting for the maiden.
@swapnilnimbalkar
thanks sir :hatsoff:.planning to maiden very soon.
paint job (lamination started.)
(https://s1.postimg.org/pi2mf2w8v/fullsizeoutput_569.jpg) (https://postimg.org/image/48f048fy3/)
(https://s13.postimg.org/nhtftgxdz/image.jpg) (https://postimg.org/image/n521naf43/)
(https://s9.postimg.org/wtz8v1se7/image.jpg) (https://postimg.org/image/tzw3hlq7v/)
(https://s10.postimg.org/ge7lm6rq1/fedfr.jpg) (https://postimg.org/image/ojpnkcfyt/)
(https://s1.postimg.org/d3819fuin/image.jpg) (https://postimg.org/image/9wdhpta2j/)
(https://s11.postimg.org/4r33amw2r/image.jpg) (https://postimg.org/image/m4ddphrdr/)
(https://s1.postimg.org/awaozrcr3/ertsrdfwer.jpg) (https://postimg.org/image/6n5yxl9hn/)
(https://s11.postimg.org/x9kcljdv7/image.jpg) (https://postimg.org/image/deyazeynj/)
(https://s4.postimg.org/rza5sowil/image.jpg) (https://postimg.org/image/fkndsd509/)
(https://s1.postimg.org/ko8uqlej3/image.jpg) (https://postimg.org/image/iwfvvov63/)
Nice going......
W8 ing for d maiden
(https://s1.postimg.org/bx06p76rz/image.jpg) (https://postimg.org/image/n9cs6zfgr/)
(https://s23.postimg.org/4tu1mevcr/a22.jpg) (https://postimg.org/image/lucxv38dz/)
(https://s18.postimg.org/3u2qoec4p/a61.jpg) (https://postimg.org/image/a7rtrnh0l/)
@prabal
maiden, have some patients
hopefully Sunday.
All waight with all electronic and what is wing span
I'm waiting.
Want to see your creation take to the skies......
:) :)
prabal
hopefully .
@Kantesh
wing is about 32" as i had shown it in 1 st page of the build , all up weight is appx 300 grms. with everything battery esc , rx, motor , prop ,servo....
final adjustment for wings , angle of incidence, pitch of the propeller etc.
(https://s9.postimg.org/ochq9gtu7/image.jpg) (https://postimg.org/image/mxg5kqsqz/)
(https://s9.postimg.org/alw6l21wf/image.jpg) (https://postimg.org/image/cdp5fyl97/)
(https://s4.postimg.org/f3qgym2b1/rrr.jpg) (https://postimg.org/image/sknfhhcmh/)
(https://s11.postimg.org/rczv1hxoz/image.jpg) (https://postimg.org/image/63c8qnhe7/)
(https://s14.postimg.org/ww0ivpqv5/eee2.jpg) (https://postimg.org/image/5y6ltz67x/)
(https://s17.postimg.org/7v9e995gf/eeee2.jpg) (https://postimg.org/image/ch5ihlqzf/)
(https://s21.postimg.org/6ke9ngt0n/ghgh.jpg) (https://postimg.org/image/oafy8i6lf/)
(https://s1.postimg.org/ak14nz9jj/dsdsds.jpg) (https://postimg.org/image/pfznvkky3/)
(https://s2.postimg.org/g5cpbc1o9/image.jpg) (https://postimg.org/image/tz120du9h/)
(https://s18.postimg.org/ta8o4by9l/fvfvf.jpg) (https://postimg.org/image/zb6d1ekvp/)
:hatsoff: :hatsoff: :hatsoff:
@unidrakeshrc
thanks
although the weight of the airplane is not calculated yet if airplane is over weight then in first flight i have to use plastic propeller , because i have to lift more weight and i need more thrust , but on latter test i am definitely planning to use my home made wooden propeller in piper cub. here is quick look how these props are made.
(https://s21.postimg.org/egsa7473b/image.jpg) (https://postimg.org/image/o1bwtzwf7/)
(https://s11.postimg.org/epup21hpv/image.jpg) (https://postimg.org/image/mvcr075yn/)
(https://s14.postimg.org/yo9flmckx/image.jpg) (https://postimg.org/image/pt8lb3nsd/)
(https://s11.postimg.org/ogs8jr6hf/w45.jpg) (https://postimg.org/image/go1krs0i7/)
(https://s14.postimg.org/9p9igvtip/image.jpg) (https://postimg.org/image/4137pzp65/)
(https://s11.postimg.org/onj8qpkn7/image.jpg) (https://postimg.org/image/qs3lrsm9r/)
https://youtu.be/w2_g91igVXw
(https://s10.postimg.org/fqt0yr5op/prop.jpg) (https://postimg.org/image/vcaciphmt/)
some bamboo stick work for the strength of the rudder, front motor mount,artificial landing gear shockers and side spars.
(https://s11.postimg.org/vgdzvqrlf/image.jpg) (https://postimg.org/image/xkycwtt7z/)
(https://s21.postimg.org/tpl43p9pj/image.jpg) (https://postimg.org/image/oe67iznmr/)
(https://s10.postimg.org/galx29lhl/image.jpg) (https://postimg.org/image/og3z0f9qd/)
(https://s4.postimg.org/f3o7kiqm5/image.jpg) (https://postimg.org/image/pdqmjrghl/)
(https://s24.postimg.org/68sjhyv11/image.jpg) (https://postimg.org/image/auonqbgk1/)
(https://s2.postimg.org/eka3ts53d/fdfd.jpg) (https://postimg.org/image/6rjg1sz45/)
(https://s21.postimg.org/ummov79cn/m21.jpg) (https://postimg.org/image/7l63pg9oz/)
(https://s22.postimg.org/tasaanctt/image.jpg) (https://postimg.org/image/6yuhh9dpp/)
(https://s2.postimg.org/tgaiukosp/paint.jpg) (https://postimg.org/image/ns483okg5/)
(https://s9.postimg.org/rfyl0ggrj/l54.jpg) (https://postimg.org/image/y6f29w3x7/)
(https://s24.postimg.org/s36ee9385/image.jpg) (https://postimg.org/image/djz9cua35/)
Tommorow is Sunday........
(https://s18.postimg.org/szwag0ld5/image.jpg) (https://postimg.org/image/lwof0efxh/)
(https://s17.postimg.org/x7v41qc33/IMG-20170713-_WA0002.jpg) (https://postimg.org/image/5x9stt963/)
(https://s10.postimg.org/ozako304p/IMG-20170713-_WA0005.jpg) (https://postimg.org/image/vpr1xinad/)
prabal
i think today is Sunday :headscratch: , i have to go to office, i mean next Sunday ;) ;) ;) ;)
(https://s12.postimg.org/xp32bp03x/IMG-20170713-_WA0011.jpg) (https://postimg.org/image/dhpmje2mh/)
(https://s14.postimg.org/6fsdq2bj5/IMG-20170713-_WA0012.jpg) (https://postimg.org/image/6sjrw8tst/)
(https://s10.postimg.org/4auu7h2p5/IMG-20170713-_WA0013.jpg) (https://postimg.org/image/d5vohzrhh/)
(https://s14.postimg.org/tp6cjzle9/IMG-20170713-_WA0017.jpg) (https://postimg.org/image/9hswronwt/)
(https://s17.postimg.org/x4g6xjmrz/IMG-20170713-_WA0014.jpg) (https://postimg.org/image/hvq9jrt3f/)
(https://s11.postimg.org/sdgfw4alv/IMG-20170713-_WA0016.jpg) (https://postimg.org/image/nrkbnrp2n/)
My fault ;D ;D
how do you upload these pics?
Open any picture in new window and you have it
some pictures of glide test C.G. checks, yes the wing is having tip stall tendency .
(https://s1.postimg.org/lqn1h62sv/fl4.jpg) (https://postimg.org/image/kblgsg1pn/)
(https://s1.postimg.org/jps0bu3xb/fl5.jpg) (https://postimg.org/image/bx1cjuxy3/)
(https://s1.postimg.org/b1vrr6jf3/fl3.jpg) (https://postimg.org/image/3lwi5dvpn/)
(https://s2.postimg.org/mtwbtvmmh/fl2.jpg) (https://postimg.org/image/hihf960jp/)
(https://s22.postimg.org/p2mpqgi01/vlcsnap-2017-07-27-19h04m16s73.jpg) (https://postimg.org/image/pfe3wn09p/)
:thumbsup:
Flight video please.
Thanks sir. soon
Stickers
Stickers
Looking awesome
Thanks
https://youtu.be/8OrclkWqEj0
Nice {:)} {:)}
Waiting for video from long time :thumbsup:
Great job.
@PRANAVK
thanks
Yes... Very nice flying..
:thumbsup: :thumbsup: :thumbsup:
@taitil
thanks
(https://s4.postimg.org/mskjv4wtp/image.jpg) (https://postimg.org/image/s3zgfuiw9/)
(https://s1.postimg.org/ik2sjrapb/image.jpg) (https://postimg.org/image/qctgbqgob/)
(https://s1.postimg.org/s8fzpod7z/image.jpg) (https://postimg.org/image/j0nr8z65n/)
https://youtu.be/0DTcSpgOXhQ
{:)} {:)}
thanks sanjay sir :hatsoff: