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« Reply #25 on: February 13, 2010, 01:22:24 AM »
sundaram
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Lucky fella, who will destroy this work of art in 5 minutes flat. You have a big heart Colonel!

Thanks Mr VC I thing you may be getting me wrong here. It was actually electronics from his crashed helicopter which his parents had bought for Rs 650-700 approx. He would always ask me to make him also a RC plane seeing my son and me. Since I just wanted to tryout IR electronics I had made this and now I am giving it to him.  Yeah even though it was very sturdy and strong it took lot of crashes, yeah he may break it after some time.

  Wink  Tongue  Grin Actually I am too…. Possessive about my RC gear, planes and electronics. Grin Grin Grin 
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« Reply #26 on: February 13, 2010, 01:28:20 AM »
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Totally new perspective - let the kid have it! As far as being possessive, We all are!!!

Cheers!

VC
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« Reply #27 on: February 13, 2010, 08:18:11 AM »
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Col.,
Great plane and Video . Clap Thumbs Up
I think using IR out doors may be the problem  for lack of range .
I guess IR radiations in sunlight  could be an issue in reducing range .
Not sure but needs a bit more of research

Sai
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« Reply #28 on: February 13, 2010, 09:54:51 AM »
sundaram
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Thanks Mr Sai,

you are absolutely correct in your assesment. IR is purely line of sight and when indoors without ambient sunlight range gets further amplified  due to reflection of the same IR of tx from walls.
« Last Edit: February 13, 2010, 03:05:55 PM by sundaramvelar » Logged

 

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« Reply #29 on: February 28, 2010, 04:25:19 PM »
sundaram
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On Popular Demand on the eve of Holi, one more colourful version of the same Low cost Rs 700 RC plane using IR Tx Rx of China made Heli is going to another 9 year old.

This time it is a silent flyer with a twin puller of 6mm coreless motor with a 1.5” dia props clipped out of a 2508 with a nail cutter mounted on the leading edge. Since the Props are mounted in front of the wing surface it is now silent not like the previous version. I liked the previous version mainly due to the resonating sound.

Photographs are posted below.

May the festival of colour bring peace, Joy, happiness and prosperity to everyone.

Wish you a Happy Holi to everyone. 

SNC00099.jpg
Re: SCRATCH BUILT MICRO FLYING UNDER 20 GMS PROJECTS
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« Reply #30 on: September 07, 2010, 08:51:37 PM »
sundaram
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This a Komet Scratch built based on the original design by Eric Maglio. The original design is a 10" wing span AUW 12 gms.

What I have made is a 11.5" wing span identical plan hand drawn based on the design by Eric Maglio and cut out of sheets recovered from biofoam plates. Final AUW has come out to be 13gms.

The plan is based on WW-II German Fighter ME-163 Komet. As the original fighter this also supposed to be a screamer
 and a very fast agile plane design.

This definitely not an indoor plane and need a very large auditorium to fly indoor. Very fast and maneuverable definitely not for beginner.

I am yet to flight test it as I am very unsure of the outcome. Since like all flying wings design it is also likely to be sensitive to CG location. With no aero foil flat wings, zero angle of attack it relies purely on CG location for the appropriate angle of attack. Since glide capability is very limited like the original fighter, it is likely to fall like a stone if CG location is not correct.

I am posting the build photographs four at a time.

Stencil cut from Plan.jpg
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« Reply #31 on: September 07, 2010, 09:03:02 PM »
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Plane after the paint Job and electronics mounted

some more build photographs

Assembled Plane.jpg
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« Reply #32 on: September 07, 2010, 09:06:54 PM »
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 Clap Clap Clap
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« Reply #33 on: September 07, 2010, 09:17:38 PM »
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You should paint... when you are not doing RC stuff ! Thumbs Up
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« Reply #34 on: September 07, 2010, 09:27:55 PM »
sundaram
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Thanks Anwar,

Painting is one of my other hobbies. However RC is more dear to me  Wink .

In Academy all my paintings used to get sold out every year so not so motivated for painting these days. Though not a great artist definitely can make pleasing paintings.  Grin
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« Reply #35 on: September 07, 2010, 09:35:11 PM »
sundaram
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Electronics

Motor is a 7mm coreless brushed motor 3.1 gms along with prop.

Propellers is 1.75 inches micro plane prop.

Receiver is 0.9gms three channel Plantraco 900 Mhz receiver.

Acctuator Plantraco 1.1 gms actuators two of them on elevon mixing.

battery is a single cell Lipo 90mah 3.3 gms

AUW of the plane is 13 gms

Some more build photographs.

0.9 gms receiver.jpg
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« Reply #36 on: September 07, 2010, 10:43:36 PM »
sundaram
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Thanks Angad @buzz_rc
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« Reply #37 on: September 08, 2010, 11:56:48 AM »
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very nice sundaramvelar.
i have 2 gram servos and 3 gram BL motor with 0.9 grams ESC,
will try to make one similar.
any flight videos?

ashta
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« Reply #38 on: September 08, 2010, 03:41:09 PM »
sundaram
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Detailed build instruction of the original design, which I copied is attached as attachments please.

Thanks Mr Astha,

I am yet to maiden this as I am very apprehensive. I found this video of the 10" wing span original design in youtube



As you can see it is very fast and very agile and it needs lot of open space. Though it can be flown in winds up to 15Mph. I am waiting for a calm day.

* Komet_Instructions[1].pdf (183.13 KB - downloaded 324 times.)
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« Reply #39 on: September 08, 2010, 04:17:51 PM »
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thank you sundaramvelar.
yes it is very fast and agile.
what is the wing span and the length of your model?
i will scale it and want to do about15 inch ws.
ashta
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« Reply #40 on: September 08, 2010, 09:31:14 PM »
sundaram
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Mr Astha,

My Model is 11.5 inches wingspan an length 6.5 inches.

Regards

Sandy
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« Reply #41 on: September 25, 2010, 07:15:22 PM »
sundaram
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The  Video for the Scratch Built Komet Me-163 from Bio Foam plates was long over due.

Now I am posting it. It has come out as a beauty and flies great too. Still slightly nose heavy and is flying in slight up trim. Will push the CG slightly back.

Thanks for watching

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« Reply #42 on: September 25, 2010, 07:46:55 PM »
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Good!! Sandy, as usual, has done a brilliant job! Bow Clap Thumbs Up
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« Reply #43 on: September 25, 2010, 09:22:09 PM »
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Great Job.... Thumbs Up
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« Reply #44 on: September 25, 2010, 11:45:57 PM »
sundaram
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Thanks you very much VC and Manoj for the Compliments please.
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« Reply #45 on: September 26, 2010, 12:27:06 PM »
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dear sandy,
very cute model! excellent paining!
very simple also. very nice work sandy,
looks like very twitchy and difficult to fly. can it fly bit slower? May be the KV of motor and prop pitch? for that weight that u achieved, you should be able to make it fly bit slower and it will be more beautifull..
thanks for sharing the video.
best regards
ashta
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« Reply #46 on: September 26, 2010, 02:38:23 PM »
sundaram
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Thanks Mr Ashta,

You are absolutely right it is very twitchy and tough, but fun to fly.

After the first crash when I had damaged the 7mm coreless motor, I had initially replaced it with GWS 05 brushed motor which has a core and is of same weight as the 7mm coreless but RPM is slightly less. I tried with various prop combinations though it was flying slow it was not able to keep the Komet in air for more than 5 sec.

For the wing span it is relying purely on speed for lift and glide. when battery goes down it slows down but its glide capability also reduces and after some time it just falls down like a stone.

I think the only way I can slow it down is by increasing the wing span to about 15-16 inches with similar configuration of power system. I will surely slow down with drag of more surface area and its glide capability will also increase with wing span.

I think your decision to try a 15 inch similar model is absolutely correct. I am also following suite with a 15 inch similar model.

Regards

Sandy
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« Reply #47 on: September 26, 2010, 03:13:24 PM »
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fantastic!!!
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« Reply #48 on: September 26, 2010, 09:54:08 PM »
sundaram
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Thank you very much AshJR
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« Reply #49 on: December 25, 2010, 09:03:51 PM »
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Where do you get the accessroies like batteries, motors and propellers for such ultra micro rc planes? I am trying to build one but it is more of a micro (250 gms, 20  inch wing span) than an ultra micro. I want to build an ultra micro...
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