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« on: January 23, 2016, 03:09:22 PM »
sanjayrai55
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This is a design of Matsumoto, Pilot's famous designer

Originally meant for 3 Channel control (Throttle, Rudder, Elevator) and Balsa with a 10-15 Nitro Engine, with 1.3-1.4 Kg weight, it has been adapted in Corro, with a 2836-1500 KV Brushless Motor, and a 9*6 e-Prop; I have added Ailerons as a 4th Channel (reducing the dihedral)

The wing is 44" span and 8" chord
« Last Edit: January 23, 2016, 03:23:51 PM by sanjayrai55 » Logged

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« Reply #1 on: January 23, 2016, 03:10:01 PM »
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http://s25.postimg.org/793f3mzpb/IMG_20160123_064807_HDR_1.jpg
Pilot (OK Models) Junior 100 adapted to Corro & Electric
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« Reply #2 on: January 23, 2016, 03:15:44 PM »
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True Flat-bottomed wings in Corro are not easy to get, and not always desirable too from the build viewpoint. I normally keep TE-Spar flat, and let Spar-LE form its natural curvature

http://s25.postimg.org/ngeaxfw3j/IMG_20160120_063219_HDR_2.jpg
Pilot (OK Models) Junior 100 adapted to Corro & Electric
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« Reply #3 on: January 23, 2016, 03:19:18 PM »
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And now, this raises an interesting question on wing incidence and AoA

The designer (the great Matsumoto) intended the wing to lie flat, and the wing bottom to be parallel to the Horizontal Stab.

But now the wing centre line is not parallel, although 2/3rds of the wing ie from Spar -> TE is!

http://s25.postimg.org/ambnqcta7/IMG_20160120_061026_HDR_1.jpg
Pilot (OK Models) Junior 100 adapted to Corro & Electric


http://s25.postimg.org/59mtc85dr/IMG_20160120_061011_HDR_1.jpg
Pilot (OK Models) Junior 100 adapted to Corro & Electric


http://s25.postimg.org/3tbau32gv/IMG_20160120_061017_HDR_1.jpg
Pilot (OK Models) Junior 100 adapted to Corro & Electric
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« Reply #4 on: January 23, 2016, 03:21:10 PM »
sanjayrai55
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So my question, dear reader, is do I try to keep the wing C/L parallel or leave the flat part parallel? Waiting to hear the views of experts and non-experts alike  Wink
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« Reply #5 on: January 23, 2016, 03:23:06 PM »
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Tried a new Wing Tip construction

http://s25.postimg.org/xqc4ixwlb/IMG_20160114_200058_HDR_1.jpg
Pilot (OK Models) Junior 100 adapted to Corro & Electric


http://s25.postimg.org/yepkfmkov/IMG_20160114_200158_HDR_1.jpg
Pilot (OK Models) Junior 100 adapted to Corro & Electric


Flat on top, tapered on the bottom
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« Reply #6 on: January 23, 2016, 03:24:45 PM »
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http://s25.postimg.org/gebrxi33z/IMG_20160123_071118_HDR_1.jpg
Pilot (OK Models) Junior 100 adapted to Corro & Electric
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« Reply #7 on: January 23, 2016, 03:25:58 PM »
sanjayrai55
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http://s25.postimg.org/ro4hsg85b/IMG_20160114_195948_HDR_1.jpg
Pilot (OK Models) Junior 100 adapted to Corro & Electric


Weight without LiPo and vinyl trim, aileron pushrods & servos etc.
« Last Edit: January 23, 2016, 03:44:03 PM by sanjayrai55 » Logged

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« Reply #8 on: January 23, 2016, 03:26:57 PM »
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The AUW is 1020 grams

http://s25.postimg.org/w3mwxpkjj/IMG_20160123_064757_HDR_1.jpg
Pilot (OK Models) Junior 100 adapted to Corro & Electric
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« Reply #9 on: January 23, 2016, 03:27:44 PM »
sanjayrai55
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http://s25.postimg.org/cj8duxjy7/IMG_20160123_064820_HDR_1.jpg
Pilot (OK Models) Junior 100 adapted to Corro & Electric


http://s25.postimg.org/793f3mzpb/IMG_20160123_064807_HDR_1.jpg
Pilot (OK Models) Junior 100 adapted to Corro & Electric
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« Reply #10 on: January 23, 2016, 06:15:58 PM »
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As usual beautiful Rai saheb.. some day I will visit your place.. Smiley
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« Reply #11 on: January 23, 2016, 08:21:42 PM »
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Excellent build sanjay rai sir  Clap  Clap
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« Reply #12 on: January 23, 2016, 09:43:45 PM »
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That such a simple model can look so pretty is a tribute to the designer and the builder.
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« Reply #13 on: January 23, 2016, 11:49:03 PM »
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Superb model sir !!
And the decals look great ,
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« Reply #14 on: January 24, 2016, 12:13:40 PM »
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Sir,
Excellent build!
maiden this coming saturday??
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« Reply #15 on: January 24, 2016, 01:52:45 PM »
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wow.. Sanjay Sir... as usual superb build... can you pls send some more pics of these to my email as would like to post this our facebook page..

regards
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« Reply #16 on: January 24, 2016, 06:45:33 PM »
sanjayrai55
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As usual beautiful Rai saheb.. some day I will visit your place.. Smiley

Thank you, and lloking forward to that Johnny. Come soon Cheesy
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« Reply #17 on: January 24, 2016, 06:46:07 PM »
sanjayrai55
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Excellent build sanjay rai sir  Clap  Clap

Thanks Gaurang
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« Reply #18 on: January 24, 2016, 06:47:24 PM »
sanjayrai55
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That such a simple model can look so pretty is a tribute to the designer and the builder.

Thanks Iyer sir. Surprised you did not comment on Reply #4 above
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« Reply #19 on: January 24, 2016, 06:48:10 PM »
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Sir,
Excellent build!
maiden this coming saturday??

Thank you Prabal. Too much fog, and heightened security, let's see
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« Reply #20 on: January 24, 2016, 06:49:15 PM »
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wow.. Sanjay Sir... as usual superb build... can you pls send some more pics of these to my email as would like to post this our facebook page..

regards
sujju

Sure Sujju. The plans are on outerzone.co.uk, and I've PM'd you a link to the pictures
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« Reply #21 on: January 24, 2016, 06:50:27 PM »
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Repeating the question posed in Reply #4 above:

So my question, dear reader, is do I try to keep the wing C/L parallel or leave the flat part parallel? Waiting to hear the views of experts and non-experts alike  Wink
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« Reply #22 on: January 24, 2016, 06:55:22 PM »
sanjayrai55
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Superb model sir !!
And the decals look great ,


Thanks so much. Is your Wai the same one if one is going from Pune to Satara?
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« Reply #23 on: January 24, 2016, 07:57:14 PM »
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Re:

One more Masterpiece from the Coro King .... Excellent build sir ... Awaiting maiden video.
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« Reply #24 on: January 24, 2016, 07:58:31 PM »
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Thanks Doc  Grin
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« Reply #25 on: January 24, 2016, 07:59:29 PM »
sanjayrai55
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Doc Nayeem: you've been making out with plenty of hot models yourself  Wink
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« Reply #26 on: January 24, 2016, 08:49:38 PM »
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so the new wing chord looks like a inverted simplex airfoil  Head Scratching wait you said the wing bottom part should be parallel to horizontal stab.
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« Reply #27 on: January 24, 2016, 09:25:48 PM »
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Sanjay sir, no words! Your building skills are unparalleled ! This one is a chic ! Love it!💖💕💘💘💘💘
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« Reply #28 on: January 24, 2016, 10:39:37 PM »
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Repeating the question posed in Reply #4 above:

So my question, dear reader, is do I try to keep the wing C/L parallel or leave the flat part parallel? Waiting to hear the views of experts and non-experts alike  Wink

Didn't respond, as with your experience you know what will happen in either case.

Instead I'll tell you what I did with my Sunbird, which, with a flat bottom airfoil, was loopy under power.

Since I didn't want to add nose weight, or reduce the decalage, I mixed 10% down elevator with throttle.
Works fine!

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« Reply #29 on: January 25, 2016, 10:31:52 AM »
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Re:

Thanks Sanjay Sir .... Inspired by you ... But the beauty, accuracy and speed of your builds are hard to match ..
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« Reply #30 on: January 25, 2016, 11:53:51 AM »
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Sanjay sir, no words! Your building skills are unparalleled ! This one is a chic ! Love it!💖💕💘💘💘💘

Thank you S174! I hope it flies too Wink
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« Reply #31 on: January 25, 2016, 11:58:23 AM »
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[/quote]

Didn't respond, as with your experience you know what will happen in either case.

Instead I'll tell you what I did with my Sunbird, which, with a flat bottom airfoil, was loopy under power.

Since I didn't want to add nose weight, or reduce the decalage, I mixed 10% down elevator with throttle.
Works fine!

[/quote]


Interesting. But I think I will first try as it is (likely to climb) and then add packing under TE if climbing is excessive. Let's see

I guess it's difficult to predict the exact change in behavior - the slightly semi-symmetrical wing will reduce lift compared to the flat-bottom, and the increased AoA should compensate??
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« Reply #32 on: January 25, 2016, 11:59:55 AM »
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Hey Doc! Thanks!
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« Reply #33 on: January 25, 2016, 12:00:25 PM »
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Sahilkit, keep  Head Scratching Head Scratching away  Grin
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« Reply #34 on: January 25, 2016, 03:30:57 PM »
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I guess it's difficult to predict the exact change in behavior - the slightly semi-symmetrical wing will reduce lift compared to the flat-bottom, and the increased AoA should compensate??

That's probably the most likely scenario!

BTW, sir, every time you produce a new model, I get encouraged to shake off laziness and build a new one too. Must be having the same effect on many forum members.  Hats Off
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« Reply #35 on: January 25, 2016, 05:02:17 PM »
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Waiting for your builds Iyer sir  Grin
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« Reply #36 on: January 25, 2016, 06:59:28 PM »
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 Tongue i think either wing setups should work provided the angle to attack is adjusted.

Edit: Sanjay the smallest rc plane you built in coro?

Sahil
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« Reply #37 on: January 25, 2016, 07:19:31 PM »
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This a message to sanjay sir: (really guilty)
To sir,
i gave up on spads after crashing the avi the 6Th time. Grin  Grin  Grin
Thank you.

P.S-I think my avispad ( air alaska N7572) has been petrified by the ghost of the spads.
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« Reply #38 on: January 25, 2016, 10:02:02 PM »
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@sanjayrai55 sir,

Thanks for the encouragement.

This is what I managed tonight.
If I do build it in the next two days, will post a separate build log.

Not bad for a sketch, eh? Even looks recognizable (I hope) Grin

image.jpg
Re: Pilot (OK Models) Junior 100 adapted to Corro & Electric
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« Reply #39 on: January 26, 2016, 06:48:39 AM »
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Sahil, the smallest I've built is the QB 10, 39", and highly aerobatic: everyone's favourite on our field. In fact, I've built two of them  Grin. Uses the same power system as the Junior 100

http://s25.postimg.org/r251by8cf/P1030263.jpg
Pilot (OK Models) Junior 100 adapted to Corro & Electric


http://s25.postimg.org/71vof2rlr/P1030985.jpg
Pilot (OK Models) Junior 100 adapted to Corro & Electric
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« Reply #40 on: January 26, 2016, 06:50:32 AM »
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Iyer sir: that model has no business on the drawing board! Put 'er in the air  >Cheesy Drool Drool
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« Reply #41 on: January 26, 2016, 07:17:57 AM »
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Prabal, these things are normal, and not anything to get worried about

I suggest you build another one; just stick to the plans, and make an extra effort to build it true and square  Thumbs Up
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« Reply #42 on: January 26, 2016, 01:31:52 PM »
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allright sir!
making a piper cub now!
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« Reply #43 on: January 26, 2016, 01:55:55 PM »
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Don't

Make an Avispad, and make it well
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« Reply #44 on: February 17, 2016, 12:09:59 AM »
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As usual...Maestro at work..Another masterpiece in creation.. Nice Sanj! Smiley
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« Reply #45 on: February 17, 2016, 03:09:43 PM »
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Thanks Dee
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« Reply #46 on: April 15, 2016, 05:05:57 PM »
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Just remembered there was no video in this log  Grin

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« Reply #47 on: April 15, 2016, 05:22:37 PM »
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Rai Saheb ..  Thumbs Up
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« Reply #48 on: April 15, 2016, 05:47:40 PM »
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Not a good landing though  Angry
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« Reply #49 on: April 16, 2016, 05:44:51 PM »
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supreb sir !
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« Reply #50 on: April 16, 2016, 06:09:08 PM »
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 Thanks
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« Reply #51 on: April 20, 2016, 09:22:21 PM »
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Nice flying there Sanj... It seems like a fine flyer..Loops etc all good.. I am sure you are are landing it better.. Quick touch down without flairing always happens when filming..Smiley
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« Reply #52 on: April 21, 2016, 10:59:26 AM »
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Thanks Deepak
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« Reply #53 on: September 19, 2017, 10:16:14 PM »
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Awesome decals.  Beautiful plane.  I think wing loading is also high. About 14-15?

Can I use these decals on my plane with your permission sir?
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« Reply #54 on: September 19, 2017, 10:17:35 PM »
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I have that plane now.
Still flying.
Wing loading is not that high.
Will calculate and get back.
Regards
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« Reply #55 on: September 19, 2017, 10:21:04 PM »
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Oh.  Ok.  Thanks.
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« Reply #56 on: September 20, 2017, 05:49:22 AM »
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Awesome decals.  Beautiful plane.  I think wing loading is also high. About 14-15?

Can I use these decals on my plane with your permission sir?
Please do Smiley
These are just sign vinyl, cut to size

And yes, Prabal took the model from me many months ago, and is happily flying it Cheesy Cheesy

Wing Area =   
22
dmē       
Weight =   
1100
g       
 Calculate

Wing Area =   
341
sq. in.      
Weight =   
38.8
oz.      
Wing Loading =   
16.4
oz. / sq. ft.


50
g/dm2
Wing Cube Loading =   
10.6
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« Reply #57 on: September 20, 2017, 05:55:07 AM »
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Too low a wing loading means the model will fly like a floater, and not at all scale-like. That is good for a rank beginner, but these models'response is sluggish, and they aren't much fun to fly

The Junior can do most things - loops, rolls, inverted, vertical charlies etc. Speeds are very  scale-like
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« Reply #58 on: October 12, 2018, 07:01:52 PM »
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Link to pictures

https://postimg.cc/gallery/1ml9vhcyk/
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