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« on: May 15, 2010, 12:09:29 AM »
R C
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Hi,

Here are few pics of my F-22, made from Coro, 30" wingspan, length 35".

Need help for what power system to use on it.
Actual plan was for Depron, but due to unavailability of depron, i planned to do it from coro.
So please give your valuable inputs on which motor, esc & cell to be used on it. {THIS F-22 PLAN IS FOR 8" PROP}
It weighs 300 grams.

Thanks.

2.jpg
MY CORO F-22.
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« Reply #1 on: May 15, 2010, 12:14:17 AM »
R C
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pics

26.jpg
Re: MY CORO F-22.
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« Last Edit: May 15, 2010, 03:40:51 AM by R C » Logged

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« Reply #2 on: May 15, 2010, 12:15:40 AM »
R C
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More pics......

6.jpg
Re: MY CORO F-22.
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« Reply #3 on: May 15, 2010, 12:24:45 AM »
R C
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I have used spar for the leading edge & one spar in centre.

Attached are the Pics.

14.jpg
Re: MY CORO F-22.
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« Reply #4 on: May 15, 2010, 12:37:39 AM »
R C
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Today i have completed the model, i just have to do the motor mount as per the motor which i will use.

It was difficult to maintain the 68 degree anlge for the Vertical Stabilizer, i have used 2" of 2mm aluminium wire. I have used 2 of each wire in one vertical stabilizer to get the angle.



some pic of finished F-22.

22.jpg
Re: MY CORO F-22.
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« Reply #5 on: May 15, 2010, 02:40:38 AM »
ujjwaana
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So another F-22 to see in Jakkur coming month! Great work RC!

Attaching  other's plan without mention is usually violation copyright to some extent. I would advice you to remove the file and put a link instead. The Plan seems to be that for EPP and not Depron (Biofoam).

Is the target AUW 300g or that of just the Airframe alone ? Without KFm aerofoils, the weight seems to be on the higher side. Be ready for fast approach for landing.

What I suggest is  you go for a 6x4 sports prop like one from RC Dhamaka / HC. 8x** would be over kill for Jet of this size.

http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=3_48_80&products_id=265
http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=7936&Product_Name=_TGS_Sport_6x4E_Precision_propeller

Pusher Prop Jets have sweet power setup at 3S 2200Kv motor. Unfortunately 2200Kv motors are not so commonly available. For your 300g airframe, below motor would be apt:

http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=2110&Product_Name=TR_28-26_16A_1900Kv_Brushless_Outrunner

http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=59_93&products_id=273


ESC: 25AMP
http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=59_95&products_id=312
http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idproduct=3731
http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=9483&Product_Name=Mystery_30A_BEC_Brushless_Speed_Controller_(Blue_Series)

Lipo :
       3S 1050-1600mAh  20C


For assembling the Tail at 68* (I had 64*),I made a 'Zig' like the one in picture below and attached the Fin. Later I reinforced with thin Depron spar stuck with Foam face CA/Epoxy. This reminds me that Biofoam (alt for Depron) is available in Bangalore in Iyengar Road market. Inquire in shops selling Acrylic / Sunpack (Coro) sheet. There this one near a temple on the road.
 
All the best... keep us posted!

PS: 1. The slot for Prop is way small you would need to cut more
      2. I assume you have reinforced the wingspan with CF rod. If not, do get a 2mm Solid/ 3x2mm hollow CF rod from RC Dhamaka.

IMG_9860.jpg
Re: MY CORO F-22.
* IMG_9860.jpg (26.14 KB, 771x514 - viewed 306 times.)
« Last Edit: May 15, 2010, 02:54:30 AM by ujjwaana » Logged

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« Reply #6 on: May 15, 2010, 04:57:32 AM »
R C
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Thanks a lot ujjwaana.

Just the Airframe alone is 300grms.

Can i purchase this from RCDHAMAKA?
http://www.rcdhamaka.com/index.php?main_page=product_info&cPath=59_93&products_id=273

I have a 30A ESC, which i had purchased from RCFORALL last year, can i use that?

I have not cut the slot for the prop completely as i was waiting for someone to tell which prop to use on it, so i will cut accordingly.

I have reinforced the wingspan with spar.

I also have 6x4 prop from RCDAHAMAKA, shall i also purchase 7x4 just incase......!

Thanks again for the detailed explaination & also thanks for informing me to remove the file.


 Smiley
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« Reply #7 on: May 15, 2010, 09:45:26 AM »
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Nice to see a F-22 made from coro Smiley Can u post a link to the plans?
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« Reply #8 on: May 15, 2010, 09:49:14 AM »
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Neat build! Congrats!!!
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« Reply #9 on: May 15, 2010, 02:45:20 PM »
R C
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Nice to see a F-22 made from coro Smiley Can u post a link to the plans?


Hi,

Thanks.
 I dont remember the link from where i got the plan, but i will email u the PDF file.
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« Reply #10 on: May 15, 2010, 02:46:57 PM »
R C
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Neat build! Congrats!!!

Thanks VC.
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« Reply #11 on: May 15, 2010, 05:33:02 PM »
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The EMAX motor with RCDhamaka is a charm. Go for it. Also use the 6x4 Prop.
the RCforall 30 ESC  is good but do test it on the ground with the motor and prop if it can handle full throttle well.
Have you put spar from wing tip to wing tip ? coz thats necessary. 
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« Reply #12 on: May 15, 2010, 07:38:09 PM »
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Nice Work Sharadd  Clap Clap Clap



Sanjay
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« Reply #13 on: May 15, 2010, 09:00:35 PM »
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The EMAX motor with RCDhamaka is a charm. Go for it. Also use the 6x4 Prop.
the RCforall 30 ESC  is good but do test it on the ground with the motor and prop if it can handle full throttle well.
Have you put spar from wing tip to wing tip ? coz thats necessary. 

Hi Ujjwaana,

I will purchase the motor on Monday.
I have put spar from wing tip to wing tip.


Thanks   




« Last Edit: May 15, 2010, 09:39:21 PM by anwar » Logged

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« Reply #14 on: May 15, 2010, 09:01:22 PM »
R C
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Nice Work Sharadd  Clap Clap Clap

Thanks Sanjay.............
« Last Edit: May 15, 2010, 09:39:01 PM by anwar » Logged

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« Reply #15 on: May 16, 2010, 12:05:11 PM »
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I dont remember the link from where i got the plan, but i will email u the PDF file.

Thanks man.. I'd love to make one of these.. I've probably have enough stolen coro (Dominoes pizza boards illegally stuck on traffic signs) from the streets to build one.. he he  Grin
« Last Edit: May 19, 2010, 06:27:15 AM by anwar » Logged

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« Reply #16 on: May 19, 2010, 05:29:41 AM »
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I dont remember the link from where i got the plan, but i will email u the PDF file.

Hey.........

I have emailed u the plan.
« Last Edit: May 19, 2010, 06:26:56 AM by anwar » Logged

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« Reply #17 on: June 19, 2010, 07:37:38 PM »
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Can i make the plane by using 3mm coro?
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« Reply #18 on: June 19, 2010, 08:12:41 PM »
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Nice job RC  Clap
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« Reply #19 on: June 19, 2010, 08:56:45 PM »
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Gr8 work. When are u taking it for a maiden flight.
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« Reply #20 on: June 19, 2010, 11:29:56 PM »
R C
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Can i make the plane by using 3mm coro?

Yes u can use 3mm coro with proper reinforcement.

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« Reply #21 on: June 19, 2010, 11:31:12 PM »
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Nice job RC  Clap

Thanks Ankur.
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« Reply #22 on: June 19, 2010, 11:33:02 PM »
R C
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Gr8 work. When are u taking it for a maiden flight.

Little busy, so did not get time for maiden. i have completed the motor mount & the servo mount.
Will post the pic later.
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« Reply #23 on: June 20, 2010, 11:14:30 PM »
R C
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Hi,

Motor mount is done.

Here are some pics, please advice if it can be done in better way.

Thanks

MOUNT.jpg
Re: MY CORO F-22.
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« Reply #24 on: June 20, 2010, 11:16:22 PM »
R C
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Some more pics.




 Smiley


MOUNT4.jpg
Re: MY CORO F-22.
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