RC India
Welcome Guest, please login or register.
 
Pages: [1] 2 3  All   Go Down
0 Members and 1 Guest are viewing this topic. Topic Tools Topic Tools 
Read
« on: January 02, 2012, 12:12:29 AM »
SunLikeStar
Forum Administrator
Forum Hero

*****

Reputation Power: 20 
SunLikeStar barely matters.SunLikeStar barely matters.
Offline Offline

City: Pune
State: Maharashtra
RC Skills: Intermediate
Posts: 1902
Join Date: Aug, 2010

High spirits we have: gravity we flout.




Started the new year with a beautiful new SPAD; Correx Mig 7. Building using plan by Dave West Hats Off.
Got the plan printed on A0 paper. Formers made out of two 3mm coro glued together with flutes perpendicular. Glue the sheets together before cutting the formers to reduce work and cutting error.
Former glued using rubber glue. Fuse cut out of 2.5mm coro and glued using hot glue.
Battery bay is my idea  Tongue

mig1.jpg
Coro Mig 7
* mig1.jpg (68.93 KB, 800x600 - viewed 2045 times.)
This post has 3 more images(s)/attachment(s). Please login or register to view them.
Logged
 

Read
« Reply #1 on: January 02, 2012, 12:14:19 AM »
SunLikeStar
Forum Administrator
Forum Hero

*****

Reputation Power: 20 
SunLikeStar barely matters.SunLikeStar barely matters.
Offline Offline

City: Pune
State: Maharashtra
RC Skills: Intermediate
Posts: 1902
Join Date: Aug, 2010

High spirits we have: gravity we flout.



Ugly spar cut out of 3mm plywood with dihedral brace on both side.

Wing + spar. Airfoil turned out little edgy but still flight worthy.

mig5.jpg
Re: Coro Mig 7
* mig5.jpg (106.6 KB, 800x600 - viewed 1978 times.)
This post has 3 more images(s)/attachment(s). Please login or register to view them.
Logged
 

Read
« Reply #2 on: January 02, 2012, 12:15:28 AM »
SunLikeStar
Forum Administrator
Forum Hero

*****

Reputation Power: 20 
SunLikeStar barely matters.SunLikeStar barely matters.
Offline Offline

City: Pune
State: Maharashtra
RC Skills: Intermediate
Posts: 1902
Join Date: Aug, 2010

High spirits we have: gravity we flout.



Fuse sitting on the wing to end the day. Already looking like a real Mig Smiley

mig91.jpg
Re: Coro Mig 7
* mig91.jpg (93.58 KB, 800x600 - viewed 1916 times.)
This post has 1 more images(s)/attachment(s). Please login or register to view them.
Logged
 

Read
« Reply #3 on: January 02, 2012, 09:19:07 AM »
praveen
Plane Lover
Forum Veteran

****

Reputation Power: 5 
praveen has no influence.
Offline Offline

City: Bengaluru
State: Karnataka
RC Skills: Advanced
Posts: 422
Join Date: Aug, 2009



Really a great build  Hats Off and MiG-3u is one of my favorite fighter!
which power plant you are planning ? Electric or IC engine?
What is the size of the plane
 
Logged

To increase thrust you need more  money! But to reduce weight you  need nothing!
 

Read
« Reply #4 on: January 02, 2012, 09:49:36 AM »
SunLikeStar
Forum Administrator
Forum Hero

*****

Reputation Power: 20 
SunLikeStar barely matters.SunLikeStar barely matters.
Offline Offline

City: Pune
State: Maharashtra
RC Skills: Intermediate
Posts: 1902
Join Date: Aug, 2010

High spirits we have: gravity we flout.



Thanks Praveen!! This will be powered by a 3536 1100kv motor and a 11x5 prop.
The pane looks huge with wing span of 1600mm and length 1000mm. Trying to keep it under 1.2kg otherwise i'll have to buy new motor for it Undecided
Logged
 

Read
« Reply #5 on: January 02, 2012, 10:26:15 AM »
rcpilotacro
Global Moderator
Forum Hero

*****

Reputation Power: 58 
rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.
Offline Offline

City: Delhi
State: Delhi
RC Skills: Advanced
Posts: 5041
Join Date: Nov, 2010

Practice, and only Practice will make you perfect



Good build Amit, few issues with mig 7 you must know
1. She will be laterally sluggish , may require a shade extra Throw,
2. You will not see the stall coming, she will stall very abruptly, so for the maiden come down with a shade extra speed,
3. Low speed flying will be fun
4. At slightly high alpha she will wallow in roll plane
5. You may require aileron rudder mix for turns for a clean turn.

Let me know the flight report, looking forward to the video
Logged

Gusty's Hangar and Introduction.

A Good pilot will practice until he gets it right,
A Great pilot will practice until he can’t get it wrong.
 

Read
« Reply #6 on: January 02, 2012, 10:28:39 AM »
ashJR7202
Plane Lover
Forum Hero

*****

Reputation Power: 8 
ashJR7202 has no influence.
Offline Offline

City: Pune
State: Maharashtra
RC Skills: Intermediate
Posts: 651
Join Date: Apr, 2010



nice build!!!! lots of efforts!!!! Hats Off

i was there at banner field on Saturday, meet praddy, mohan and others......i think u werent there!!!
Logged

Hanger: Mini Yak-54| 210 Phantom | SU-47| F-15| EuroFighter|Scrappy|SU 27|Eurofighter|Sukhoi PAK FA
Blade MCX| Blade CP PRO
JR XP7202| DX7
 

Read
« Reply #7 on: January 02, 2012, 11:07:38 AM »
SunLikeStar
Forum Administrator
Forum Hero

*****

Reputation Power: 20 
SunLikeStar barely matters.SunLikeStar barely matters.
Offline Offline

City: Pune
State: Maharashtra
RC Skills: Intermediate
Posts: 1902
Join Date: Aug, 2010

High spirits we have: gravity we flout.



Thanks Augustinev!
1. She will be laterally sluggish , may require a shade extra Throw
5. You may require aileron rudder mix for turns for a clean turn.
I thought so hence increased rudder by around 30%, will mix with ailerons Thumbs Up

You will not see the stall coming, she will stall very abruptly
That's my biggest worry, add to that a kinked airfoil Sad

@ashJR7202 Thanks and welcome to the club Smiley Yes I heard you were there, looking forward to see you next weekend Thumbs Up
Logged
 

Read
« Reply #8 on: January 02, 2012, 12:07:58 PM »
praveen
Plane Lover
Forum Veteran

****

Reputation Power: 5 
praveen has no influence.
Offline Offline

City: Bengaluru
State: Karnataka
RC Skills: Advanced
Posts: 422
Join Date: Aug, 2009



1600 mm wing span ! thats a huge plane master  Salute

As gutsy sir stated it will have poor lateral stab and more prone to tip stalls,so should maintain good speed for landing and sharp turns! even a bit CG variation plane will dance in the air!
my suggestion better to have some  higher kv motor like 1400kv ! will have enough power to pull out from low altitude deep stalls!
because i have faced these problem with lower kv rpm with P-51 elelctric, than i have replaced with 1450kv now it flies like a real one!

All the best for maiden master and waiting for video! Thumbs Up
Logged

To increase thrust you need more  money! But to reduce weight you  need nothing!
 

Read
« Reply #9 on: January 02, 2012, 07:49:57 PM »
SunLikeStar
Forum Administrator
Forum Hero

*****

Reputation Power: 20 
SunLikeStar barely matters.SunLikeStar barely matters.
Offline Offline

City: Pune
State: Maharashtra
RC Skills: Intermediate
Posts: 1902
Join Date: Aug, 2010

High spirits we have: gravity we flout.



Don't have a better motor right now Sad will try with higher pitch prop, maybe a 10x6. hope it works; if not then i'll get a 1400kv motor.
Logged
 

Read
« Reply #10 on: January 02, 2012, 08:16:45 PM »
rcpilotacro
Global Moderator
Forum Hero

*****

Reputation Power: 58 
rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.
Offline Offline

City: Delhi
State: Delhi
RC Skills: Advanced
Posts: 5041
Join Date: Nov, 2010

Practice, and only Practice will make you perfect



Amit

Laterally sluggish means very stable laterally , Fin height had been a issue with the MiG that's why lateral oscillation at high alpha, good low speed (Without manoeuvring too much). motor should not be an issue, if you pick some speed and climb at a shallow angle of climb
Logged

Gusty's Hangar and Introduction.

A Good pilot will practice until he gets it right,
A Great pilot will practice until he can’t get it wrong.
 

Read
« Reply #11 on: January 15, 2012, 10:32:48 PM »
SunLikeStar
Forum Administrator
Forum Hero

*****

Reputation Power: 20 
SunLikeStar barely matters.SunLikeStar barely matters.
Offline Offline

City: Pune
State: Maharashtra
RC Skills: Intermediate
Posts: 1902
Join Date: Aug, 2010

High spirits we have: gravity we flout.



Electronics installed, 1mm rudder and elevator  push rods run through flutes. Plywood motor mount.
Canopy out of 2 liter soft drink bottle.

IMG_20120113_232547.jpg
Re: Coro Mig 7
* IMG_20120113_232547.jpg (77.92 KB, 800x600 - viewed 1841 times.)
This post has 3 more images(s)/attachment(s). Please login or register to view them.
Logged
 

Read
« Reply #12 on: January 15, 2012, 10:34:33 PM »
SunLikeStar
Forum Administrator
Forum Hero

*****

Reputation Power: 20 
SunLikeStar barely matters.SunLikeStar barely matters.
Offline Offline

City: Pune
State: Maharashtra
RC Skills: Intermediate
Posts: 1902
Join Date: Aug, 2010

High spirits we have: gravity we flout.



in pictures:
1. big fat test pilot  Grin
2. Mig ready for maiden

DSC00853.jpg
Re: Coro Mig 7
* DSC00853.jpg (53.7 KB, 800x600 - viewed 1752 times.)
This post has 1 more images(s)/attachment(s). Please login or register to view them.
Logged
 

Read
« Reply #13 on: January 15, 2012, 10:35:34 PM »
SunLikeStar
Forum Administrator
Forum Hero

*****

Reputation Power: 20 
SunLikeStar barely matters.SunLikeStar barely matters.
Offline Offline

City: Pune
State: Maharashtra
RC Skills: Intermediate
Posts: 1902
Join Date: Aug, 2010

High spirits we have: gravity we flout.



Maiden flight video  Thumbs Up
Logged
 

Read
« Reply #14 on: January 15, 2012, 10:36:40 PM »
maserati
Plane Lover
Senior Member

***

Reputation Power: 3 
maserati has no influence.
Offline Offline

City: ghaziabad
State: Uttar Pradesh
RC Skills: Beginner
Posts: 178
Join Date: Jul, 2011



great build sir.........
 Bow Bow
regards..
hitesh
« Last Edit: January 15, 2012, 10:59:20 PM by anwar » Logged

ultra stick(electric),osh kosh,SPADET LC-40,coro piper cub 76".
 

Read
« Reply #15 on: January 15, 2012, 10:39:55 PM »
Tushar.k7
Plane Lover
Active Member
**

Reputation Power: 1 
Tushar.k7 has no influence.
Offline Offline

City: Pune
State: Maharashtra
RC Skills: Beginner
Posts: 31
Join Date: Sep, 2011



hey, thats a great plane...
and the flight was superb..!!!
Logged
 

Read
« Reply #16 on: January 15, 2012, 10:49:06 PM »
SunLikeStar
Forum Administrator
Forum Hero

*****

Reputation Power: 20 
SunLikeStar barely matters.SunLikeStar barely matters.
Offline Offline

City: Pune
State: Maharashtra
RC Skills: Intermediate
Posts: 1902
Join Date: Aug, 2010

High spirits we have: gravity we flout.



Thank you Hitesh Smiley
Thanks Tushar, its a beautiful flyer indeed Thumbs Up
Logged
 

Read
« Reply #17 on: January 15, 2012, 11:00:38 PM »
anwar
Administrator
Forum Hero

*****

Reputation Power: 141 
anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!anwar is awe-inspiring!
Offline Offline

City: Doha (Qatar) & Thrissur
State: Kerala
RC Skills: Advanced
Posts: 11619
Join Date: Mar, 2009

RC India - Flying and racing with open minds !



Good job
Logged

Hangar : Please see my introduction.
RC India forum and me : About this forum.
 

Read
« Reply #18 on: January 15, 2012, 11:20:21 PM »
KALYANPRODHAN
Global Moderator
Forum Hero

*****

Reputation Power: 17 
KALYANPRODHAN has no influence.
Offline Offline

City: Kolkata
State: West Bengal
RC Skills: Intermediate
Posts: 1584
Join Date: Jul, 2010

Information sharing improves knowledge of both.



While bending the fuselage, you have to cut the inner surface flute one by one as described in Spad to the boon site and after fixing, just have to glue again with thin epoxy layer so that smooth curves can be achieved with toughened surfaces. A simple picture just added for others drawn in MSPaint and hope it will explain more.

flute curving.jpg
Re: Coro Mig 7
* flute curving.jpg (14.36 KB, 351x213 - viewed 1408 times.)
Logged

We have to unite and to prove ourself to make indigenous products as well as marketing / Canvasing them. I'm sure we must achieve success if we try unitedly.
 

Read
« Reply #19 on: January 15, 2012, 11:30:38 PM »
spitfire
Plane Lover
Forum Hero
*****

Reputation Power: 7 
spitfire has no influence.
Offline Offline

City: Bengaluru
State: Karnataka
RC Skills: Advanced
Posts: 506
Join Date: Jul, 2010



Nice plane and Nice flying..!  Clap
Logged
 

Read
« Reply #20 on: January 16, 2012, 06:32:32 AM »
rcpilotacro
Global Moderator
Forum Hero

*****

Reputation Power: 58 
rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.
Offline Offline

City: Delhi
State: Delhi
RC Skills: Advanced
Posts: 5041
Join Date: Nov, 2010

Practice, and only Practice will make you perfect



Amit
Like someone said what a beauty, did you see the low speed glide, she will be fun there too, also must've noticed how the right wing fell, she is stalling at about 11 alpha, but will recover instantaneously, the moment you lower the nose.

Superb
Logged

Gusty's Hangar and Introduction.

A Good pilot will practice until he gets it right,
A Great pilot will practice until he can’t get it wrong.
 

Read
« Reply #21 on: January 16, 2012, 09:52:34 AM »
SunLikeStar
Forum Administrator
Forum Hero

*****

Reputation Power: 20 
SunLikeStar barely matters.SunLikeStar barely matters.
Offline Offline

City: Pune
State: Maharashtra
RC Skills: Intermediate
Posts: 1902
Join Date: Aug, 2010

High spirits we have: gravity we flout.



Thanks a lot guys Smiley
@Kalyan that's exactly how i did it, a little more patience would have resulted in a smoother curve on the fuselage.
@Augustinev yes she glides a slow speed although the glide ratio is very low. Overall she is more fun at slow speeds Thumbs Up
Logged
 

Read
« Reply #22 on: January 16, 2012, 02:21:45 PM »
koushik
Plane Lover
Active Member
**

Reputation Power: 1 
koushik has no influence.
Offline Offline

City: Bangalore
State: Karnataka
RC Skills: Beginner
Posts: 18
Join Date: Dec, 2010



fantastic plane ....  Hats Off .. Maybe you could add a landing gear.. Since it flies in so slow a thin 2 mm steel wire might suffice, no?
Logged
 

Read
« Reply #23 on: January 16, 2012, 02:28:44 PM »
SunLikeStar
Forum Administrator
Forum Hero

*****

Reputation Power: 20 
SunLikeStar barely matters.SunLikeStar barely matters.
Offline Offline

City: Pune
State: Maharashtra
RC Skills: Intermediate
Posts: 1902
Join Date: Aug, 2010

High spirits we have: gravity we flout.



Thank you Koushik, i have no plans of putting on a landing gear. The field we fly on is not suitable for rolling take off and has enough grass for a belly landing. Also this bird is way to heavy for 2mm Smiley
Logged
 

Read
« Reply #24 on: January 16, 2012, 03:45:01 PM »
rcpilotacro
Global Moderator
Forum Hero

*****

Reputation Power: 58 
rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.rcpilotacro is on the verge of being accepted.
Offline Offline

City: Delhi
State: Delhi
RC Skills: Advanced
Posts: 5041
Join Date: Nov, 2010

Practice, and only Practice will make you perfect



Your test pilot looks like Mr Pugachev after a Cobra. Cute
Logged

Gusty's Hangar and Introduction.

A Good pilot will practice until he gets it right,
A Great pilot will practice until he can’t get it wrong.
 

Pages: [1] 2 3  All   Go Up
Jump to:  

Related Topics
Subject Started by Replies Views Last post
getting into coro (yak 54)
Electric Planes
Pikle6 7 7977 Last post February 23, 2014, 05:30:00 PM
by topalle
No coro here?
Gas/Glow/Nitro Planes
flying doc 23 16995 Last post May 11, 2010, 12:56:11 PM
by saurabhhsrivastavaa
MY CORO F-22. « 1 2  All »
Self-designed, DIY and College Projects
R C 29 14408 Last post October 02, 2010, 01:59:14 AM
by R C
coro plast rc plane
Electric Planes
rishiwings 2 3120 Last post April 30, 2012, 09:17:48 AM
by rishiwings
Coro-Bandage...coro paper
Tools, Materials and Building Techniques
topalle 1 3284 Last post February 23, 2014, 05:13:10 PM
by topalle