Pilot (OK Model) Shooting Star 40 L in Corro

sanjayrai55 · February 26, 2015, 12:58:38 PM

Wanted to build a 40 size Nitro in Corro, and decided to adapt the Pilot Shooting Star 40 L, designed by Y Matsumoto

Plans on outerzone.co.uk

sanjayrai55 · February 26, 2015, 01:00:50 PM

Don't have retracts

But will use flaperons

sanjayrai55 · February 26, 2015, 01:04:04 PM

Bit different from my normal corro builds

The designer suggests a weight of 2.45 to 2.8 Kg. My judgement tells me that in corro, this will be around 2 Kg only. As the engine weight would be the same (actually more, as I will be using an OS 55AX) it will be very nose heavy. So Will mod it accordingly

sanjayrai55 · February 26, 2015, 01:06:16 PM

Used a 12 mm Balsa spar

The wing is swept back and tapered too.

The top is flat, and the underside tapers upward forming a dihedral on the bottom

K K Iyer · February 26, 2015, 01:08:08 PM

Great choice.
Look forward to seeing one again after over 30 years.
Good that you'll have flaps, as she'll fly/land rather faster than our electrics...

sanjayrai55 · February 26, 2015, 01:09:26 PM

At a 60"span, I did not feel too happy about using the normal corro ailerons. So I stuck a balsa TE (10 mm) and will use balsa ailerons. These will be made from 6 mm + 4 mm balsa sheets glued together and sanded to shape

sanjayrai55 · February 26, 2015, 01:10:47 PM

Quote from: K K Iyer on February 26, 2015, 01:08:08 PM
Great choice.
Look forward to seeing one again after over 30 years.
Good that you'll have flaps, as she'll fly/land rather faster than our electrics...

Have you seen this model before sir? I looked in RCG, RCU etc. for a build log/Flight test but couldn't find one

sanjayrai55 · February 26, 2015, 01:14:45 PM

Wingtips from HD thermocole, epoxied in

sanjayrai55 · February 26, 2015, 01:17:06 PM

Will be using 2 X 17 gram Metal Gear Servos for Ailerons

K K Iyer · February 26, 2015, 01:22:15 PM

John and Arvind used to fly one in Polo Ground / IITK in the early 80's.
Will check if it is still around.

Your build log will become the standard reference!
Send a link to SteveWMD. Perhaps he can attach it to the plan download page.
Will the 55 not be too much?

Edit: I think i'll send any further interjections as PMs, otherwise it disrupts the continuity of the build log.

sanjayrai55 · February 26, 2015, 02:27:02 PM

John I knew; Arvind?

I have only a 55, it doesn't have to be flown at WOT

Don't PM unless it's a Personal Message

sanjayrai55 · February 26, 2015, 02:30:13 PM

Fuse is normal 4 mm Corro, but with a lot of reinforcement

2 mm lite-ply lining in the front half, and triangle stock at the back

sanjayrai55 · February 26, 2015, 02:32:34 PM

I make a " crutch" from 5 mm close fluted corro in the front. The tank rests on top, and the main u/c contacts it to spread the load, plus it is a structural member

sanjayrai55 · February 26, 2015, 02:35:00 PM

Black enamel paint used for fuel-proofing the wooden parts which could be exposed to fuel

sanjayrai55 · February 26, 2015, 02:36:43 PM

Decided to make a Balsa Block half-cowling - because I've never done it before

sanjayrai55 · February 26, 2015, 02:38:26 PM

Missed this pic

Oh, and I drilled and tapped the GRN mount. Will put a single nyloc nut at the end

sanjayrai55 · February 26, 2015, 02:39:50 PM

Cowl

sanjayrai55 · February 26, 2015, 02:41:19 PM

Decided I needed a cockpit too

sanjayrai55 · February 26, 2015, 02:43:17 PM

......and a turtle-deck

sanjayrai55 · February 26, 2015, 02:44:42 PM

sanjayrai55 · February 26, 2015, 02:47:04 PM

The tail feathers are made from 2 sheets of 3 mm corro glued together, reinforced with some 3 mm Carbon Fibre round tube

niranjanrao · February 26, 2015, 07:00:23 PM

Awesome..Just speechless... Keep up the good work Sir.

sahilkit · February 26, 2015, 07:08:23 PM

Hi sanjay,

The lite ply you are using can be got from local plywood dealers ?. With what material are you planning to cover bottom part of the fuse ?.

sanjayrai55 · February 26, 2015, 08:46:56 PM

Quote from: niranjanrao on February 26, 2015, 07:00:23 PM
Awesome..Just speechless... Keep up the good work Sir.

Thank you

sanjayrai55 · February 26, 2015, 08:48:41 PM

Quote from: sahilkit on February 26, 2015, 07:08:23 PM
Hi sanjay,

The lite ply you are using can be got from local plywood dealers ?. With what material are you planning to cover bottom part of the fuse ?.

1. I got the ply from Mr. Krunal Gajjar, gajjark on the forum
2. This detail will shortly follow. I have posted about 10 Corro builds on this forum, have a look

sanjayrai55 · February 26, 2015, 08:49:51 PM

sanjayrai55 · February 26, 2015, 08:50:33 PM

sanjayrai55 · February 26, 2015, 08:51:13 PM

sanjayrai55 · February 26, 2015, 08:51:45 PM

sanjayrai55 · February 26, 2015, 08:52:30 PM

sanjayrai55 · February 26, 2015, 08:53:46 PM

sanjayrai55 · February 26, 2015, 08:54:32 PM

sanjayrai55 · February 26, 2015, 08:55:26 PM

sahilkit · February 26, 2015, 09:12:08 PM

just finished seeing some of your builds, what will happen if one keeps the bottom of the fuse open and fly?

sanjayrai55 · February 26, 2015, 09:19:00 PM

Depends on the kind of model. On a trainer, nothing too much except dirt

On a sports/performance model, will create turbulence. Inverted flying will be difficult

sanjayrai55 · February 27, 2015, 05:23:59 AM

However without the bottom sheeting the fuse will have a twisting tendency. The rigidity comes from the box structure. So when the fuse flexes and twists the tail feathers too will move. The controls will be very fuzzy

Dr. Abhishek Agrawal · February 27, 2015, 09:05:58 AM

Great Build Sanjay Sir All the best for Maiden

sanjayrai55 · February 27, 2015, 09:16:40 AM

Abhi

sahilkit · February 27, 2015, 09:21:18 AM

thanks

asupan · February 27, 2015, 10:38:27 AM

Wonderful Build Sir. Lovely looking model.

All the best for a good maiden flight.

sanjayrai55 · February 27, 2015, 10:55:26 AM

Thank you Asupan

ashok baijal · February 27, 2015, 04:44:03 PM

Master of coro.

Rcjabalpur · February 27, 2015, 05:06:49 PM

What a build , if you ask me it looks like a balsa plane .

v2 eagle · February 27, 2015, 05:26:18 PM

Exactly, it looks like a rtf one.

sanjayrai55 · February 27, 2015, 07:24:27 PM

Ashok-ji, Raj, Ashok v2 - Thanks very much

sanjayrai55 · February 27, 2015, 07:26:03 PM

Many feel Corro models are not good-looking, and difficult to build

I hope to show the converse also is true

And, I hope it flies

sanjayrai55 · February 27, 2015, 07:26:53 PM

sanjayrai55 · February 27, 2015, 07:29:37 PM

I deliberately added reinforcement wherever I could to increase the weight. Finally at 2.1 Kg (4.6 lbs) with the Rx battery and an empty tank

Use a Sullivan 300 cc tank with 3 tube system

sanjayrai55 · February 27, 2015, 07:36:43 PM

I had bought some time ago 2400 mah NiMh LSD batteries from HK. Made a Rx pack from them

sahilkit · February 27, 2015, 07:51:21 PM

Hi sanjay

How does one balance a glow model ? (W-fuel or W/O fuel)

Sahil

sanjayrai55 · February 27, 2015, 07:54:55 PM

Try and figure it out. What will happen to the model's balance as the fuel is expended?

sahilkit · February 27, 2015, 08:08:05 PM

Tail heavy when fuel tank is empty but if one balances with fuel then after tank become empty model tends to be nose heavy so...........

Edit: Wait

1. Balance model with out fuel and then add fuel becomes nose heavy and when empty balances again.
2. Balance model with fuel and when empty tail heavy.

sanjayrai55 · February 27, 2015, 08:10:36 PM

.....and better nose heavy than tail heavy, especially if your fuel unexpectedly gets over and you have to make a dead-stick landing - then you sure don't want it tail-heavy

sahilkit · February 27, 2015, 08:15:22 PM

correct don't want it tail heavy especially in windy conditions starts acting bouncy and hard to control.

K K Iyer · February 27, 2015, 09:13:38 PM

Quote from: sanjayrai55 on February 27, 2015, 07:54:55 PM
Try and figure it out.

With due apology to Sahilkit (not aimed at him!)
This is THE BEST ADVICE to newbies who won't make the effort, and expect to be spoon fed.

sahilkit · February 27, 2015, 09:46:16 PM

its okay even if it was aimed at me

docnayeem · February 28, 2015, 11:39:37 AM

Sanjay sir.... Again a beautiful build... Hats off....

rcrcnitesh · February 28, 2015, 11:47:24 AM

What to say, I have no words.

sanjayrai55 · February 28, 2015, 11:55:53 AM

Thanks Doc; Thanks Nitesh

sanjayrai55 · March 01, 2015, 08:18:13 AM

Maiden washed out today - heavy rain since 4 am

sahilkit · March 01, 2015, 08:41:54 AM

its raining here in Hyderabad as well.

sanjayrai55 · March 01, 2015, 08:54:51 AM

Wrong place. Post your question in the appropriate section/thread. Better read RC Gems: http://www.rcindia.org/rc-india-forum/the-rc-india-gems/

manojswizera · March 01, 2015, 02:22:36 PM

Missed the thread sanjay sir,
awesome build .

sanjayrai55 · March 01, 2015, 02:37:55 PM

Thank you Manoj

ppcruise · March 01, 2015, 03:25:18 PM

When I first saw this I thought this was an RTF!!!!! But then I realised who was posting this and I knew it couldn't be :-)

You sir, by far, are the most amazing builder.

girishsarwal · March 01, 2015, 04:17:59 PM

Sanjay sir, mods will have to run a separate sweepstakes for you, where all your models will qualify, the mods wont need a judge and we all know who will win. That is one of the finest builds. I love the stars on the empennage. Lucky to have seen this model in its making.

wingmanbunty · March 01, 2015, 04:42:02 PM

sir ji
best of luck for the Maiden

sanjayrai55 · March 01, 2015, 07:08:52 PM

Thank you Pratyush, Girish, Bunty

very much

gaurang.1972 · March 04, 2015, 08:42:59 PM

Sanjay sir again i am late but your build is excellent you r genius hates off to u

and good luck for maiden and waiting for maiden video

sanjayrai55 · March 05, 2015, 06:03:34 AM

Thank you Gaurang

rastsaurabh · March 05, 2015, 11:41:19 AM

Sanjai sir this is an excellent build as usual..... just curious to know what is OK MODEL mentioning in title

sanjayrai55 · March 05, 2015, 11:58:14 AM

See post #1
http://www.rcindia.org/electric-planes/zattack!!/

maahinberi · June 02, 2016, 03:58:44 PM

Still waiting for videos....................................

sanjayrai55 · June 02, 2016, 04:22:57 PM

Long wait - until I find a ground

maahinberi · June 02, 2016, 04:36:11 PM

Not yet maidened?

sundaram · June 02, 2016, 04:38:03 PM

May the soul of the beauty rest in peace.

sanjayrai55 · June 02, 2016, 04:43:10 PM

Still a virgin

Looking for a ground.

Else, I know a couple of chaps in Lucknow with super facilities...........

sanjayrai55 · June 02, 2016, 04:45:30 PM

Actually I built the Cherokee for the sweepstakes, so had to take out the engine and put it on that

After the maiden, the Cherokee too lies desolate for want of a field

rcpilotacro · June 02, 2016, 04:47:34 PM

Quote from: sanjayrai55 on June 02, 2016, 04:43:10 PM

Else, I know a couple of chaps in Lucknow with super facilities...........

Private RC runway, open field all around, cant ask for more

sanjayrai55 · June 02, 2016, 04:50:33 PM

And a couple of expert RC Pilots for when you get into trouble

(who are also great company,some of the nicest guys on the Indian RC Scene

)

sundaram · June 02, 2016, 09:31:28 PM

Thanks sir. We are blessed to be in yours.

I am very sorry. I totally mistook on it on the earlier reply. All the very best for the first flight sir.

On the way to lucknow will be honoured to fly it If you have not done it by then already.

PS: Diminishing flying space is a sad trend of late sir. Heard about Bangalore guys Hoskote fiasco too recently.

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