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« on: December 20, 2010, 11:33:48 AM »
PankajC
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Learning to Fly




Well, last saturday was pure bliss. I had been scratch building (my own design) a pusher trainer to learn flying. Over the past few I had been testing the bird but somehow could not fly decently. I was taking off, but was turning without gaining height, so it was coming down. In all I made about 7-8 attempts, but even with all the crashing, the model has held on with some repairs.

This was till saturday, when a helpful flyer (Divay Puri) decided to be my mentor and trim the bird. He also managed to maiden the bird, before handling the controls back to me. The 3-4 mins that the bird was in the air, was pure bliss....


The bird has a wingspan of 40", length around 31" chord of 7.1" weighs all up about 550gm. The main fuse has a frame of 1" laminated biofoam with 2mm carbon rods. The wings and tail fins are 5mm biofoam

Well this pic was taken after the 5th attempt when I had to repair the wings as it had ripped from the screw holes.

Thanks Divay for making my day.

regards
Pankaj


IMG_0324.jpg
I finally got to build and fly a pusher trainer
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« Reply #1 on: December 20, 2010, 11:39:50 AM »
PankajC
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Learning to Fly



Some build pics


IMG_0308.jpg
Re: I finally got to build and fly a pusher trainer
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« Reply #2 on: December 20, 2010, 11:44:30 AM »
rajaram
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nice build
Looks are also good Salute
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« Reply #3 on: December 20, 2010, 11:45:37 AM »
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Congrajulations Pankaj, your bird looks great. Good design, what is the compartment under the wing for?
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« Reply #4 on: December 20, 2010, 11:56:56 AM »
PankajC
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Learning to Fly



Earlier, the tail was being designed like this, but was changed after the build when I realized that the 1" x 1" join was not providing enough rigidity to the tail section and that the tail was flexing. After which I made the tail section with a 6mm hollow carbon tube and stuck the tail fins there.

The battery is long enough for 3S1P 1600mAh, but I tested with a 1000mAh pack. The power is provided by a Towerpro combo from Hobbycity http://www.hobbycity.com/hobbyking/store/uh_viewItem.asp?idProduct=4853

The chamber below holds the AR6200 twin receiver and the ESC. The battery goes is in the nose

 

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« Reply #5 on: December 20, 2010, 11:58:01 AM »
anwar
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Nice Smiley

Why is the linkage rod not going straight from the servo the elevator ?
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« Reply #6 on: December 20, 2010, 12:00:29 PM »
PankajC
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Anwar, I did not have a linkage connector, so I have created a Z in the middle to allow for any small correction in the pushrod length.
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« Reply #7 on: December 20, 2010, 12:50:46 PM »
anwar
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Thanks for the clarification.  Usually "V" bends are made for that purpose, and "Z" bends are for the ends to be locked into servo or control horns.

Please do post some videos Smiley
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« Reply #8 on: December 20, 2010, 01:20:54 PM »
runik4
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Hi!
Lenghti but Good efforts with level Best Result.       Salute 
Congrates !!!  Grin

From where You get Prop ?    Head Scratching  What about its Size & Price??  Indian Rupees
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« Reply #9 on: December 20, 2010, 07:17:04 PM »
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I always like pusher planes especially as a trainer airplane it keeps the motor safe.. & look very cool Grin
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« Reply #10 on: December 21, 2010, 11:07:15 AM »
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Hi Pankaj.....looks neat. Have you flown it yet ?
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« Reply #11 on: December 21, 2010, 12:19:41 PM »
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Hey, nice plane.. Looks neat enough to be a ARF Thumbs Up How have you given the wing its curvature?
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« Reply #12 on: December 24, 2010, 12:26:50 AM »
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You are always welcome Pankaj.... I would be more than happy to stand by you and see you fly ... see you soon

Regards,
Divay Puri
« Last Edit: December 24, 2010, 12:24:44 PM by divay99 » Logged

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« Reply #13 on: December 24, 2010, 12:24:05 PM »
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Divay Sir has always been very helpful to all the flyers who come to our field including me. Thx
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« Reply #14 on: December 24, 2010, 12:25:40 PM »
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Thank you Crazy... I can say the very same for you.... cheers !!! Oh btw ... dont forget to get the vaseline tommor.... Thanks
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« Reply #15 on: December 24, 2010, 01:09:44 PM »
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Oh btw ... dont forget to get the vaseline tommor.... Thanks

Vaseline  >Cheesy >Cheesy >Cheesy!!! Naughty Naughty !!!  >Cheesy >Cheesy >Cheesy HA HA HA  Giggle

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Cheers !!!
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« Reply #16 on: December 24, 2010, 02:04:44 PM »
divay99
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ahahahahah.... Saurabh... rubbing vaseline make the landings smoother.... ahahahahahah
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« Reply #17 on: December 24, 2010, 02:43:38 PM »
PankajC
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Since the field is no where is sight, wonder what kind of landings Wink
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« Reply #18 on: December 24, 2010, 02:56:33 PM »
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corrupt mind  Grin Grin Grin Grin Grin Grin Grin Grin Grin Grin Grin Grin Grin Grin Grin Grin Grin Grin
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« Reply #19 on: December 24, 2010, 03:06:53 PM »
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fields are always the best for landings... the grass tickles the body... of the plane Smiley Smiley Smiley
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« Reply #20 on: December 24, 2010, 03:09:06 PM »
anwar
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"Tickle"  Head Scratching

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« Reply #21 on: May 15, 2011, 02:50:03 PM »
PankajC
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OK, some update on this build.

I have been flying this bird for sometime now. Flies nice and slow, in fact so slow that one can take a nap while the bird is in the sky. Decided to time the flight time. I am using a 3S1P 1000mAH battery. It gave me a good 15mins flying time with little bit of throttle management. The other thing was that I was practically flying with about 25-30% of throttle most of the time.

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« Reply #22 on: September 26, 2011, 10:38:25 AM »
PankajC
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Final update..... retiring this bird.
Reason? I was on settling things up for Sunday flying and slipped. Landed heavily on this one and the wing of the cub. The fuse broke in this and the wing in the cub....
Well back to the drawing board.....
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