Title: Coro MIG 7 : Build LOG Post by: Mjet on October 22, 2012, 04:36:43 PM Hello All,
I had built a CORO SPAD as my first attempt, but the box type shape could not given satisfaction and feel of a real aircraft, which can increase the heart beats, Perform Aerobatics and fun in flying, so I intent to build my second scratch build as CORO MIG 7 because of the beauty of MIG and easy building from Coro sheet. One of reason which inspired me, that most of the designs which we considered are box type, so I want to make some more shapes from CORO. Thanks to Dave West for free Plans. Plan was downloaded from site http://westaero.wingedshadow.com Objectives To get feel of Aircraft and perform Aerobatics Good aesthetics of model To Demonstrate the easy building from CORO sheet with beauty. Since Coro is easily available and models are likely crash proof, so to motivate beginners to build models from CORO To demonstrate, that we can build more other shapes also from CORO. I will follow the original plan and use 3 mm coro for entire build. Need help and support from all seniors and other members of forum. Thanks and Regards Mjet Title: Re: Coro MIG 7 : BUild LOG Post by: bokilap on October 22, 2012, 04:50:20 PM Sunlikestar is the man who can guide you...He has made one
Title: Re: Coro MIG 7 : Build LOG Post by: Mjet on October 22, 2012, 10:46:59 PM Thanks Bakya, I have gone through that thread.
Parts are ready to cut. Title: Re: Coro MIG 7 : Build LOG Post by: Mjet on October 23, 2012, 02:09:06 PM Parts have been cut down from Coro, but landing gear on wings is a puzzle for me. Need some ideas from forum members , Pl help me
Title: Re: Coro MIG 7 : Build LOG Post by: KALYANPRODHAN on October 23, 2012, 02:39:37 PM Use wing spar to fix and use coro covering for better look and stop longitudinal movement of landing gear assembly that seen in single wire landing gear.
Title: Re: Coro MIG 7 : Build LOG Post by: girishsarwal on October 23, 2012, 03:31:58 PM s
Sorry guys, please ignore my post. This was my two year old terror machine taking over my laptop Title: Re: Coro MIG 7 : Build LOG Post by: Mjet on October 27, 2012, 10:32:00 PM Here is the progress , I am a slow builder
Completed the wing ( Flat Bottom) - Glue used ( Rubber based and Hot Glue) Used Pine wood spur and screwed together Dihedral 4 Inch as per plan Wing Span 45 Inch For Landing gear Wood block installed inside of wing Title: Re: Coro MIG 7 : Build LOG Post by: anwar on October 28, 2012, 02:28:51 AM Coming up nicely :thumbsup:
If you want ideas on the landing gear, look at the TeaRacer builds too. They are fairly similar low-winger models. Title: Re: Coro MIG 7 : Build LOG Post by: Mjet on October 29, 2012, 12:49:21 PM Thanks Anwar for Moral boosting .. pl review , that what I did for Landing Gear..
I decided to put landing gears made from Cycle spoke ( Gauge 10, 3 mm ) , so glued ( Rubber based ) wood block and small pieces of Ply to provide some space for screws. This may also provide some strength to spur. Title: Re: Coro MIG 7 : Build LOG Post by: Mjet on November 11, 2012, 10:37:01 PM I have completed the Fuse , but the weight of wings and fuse is some higher than expectation ( about 500 gms).
After torque rod installation on wings , I doubt , that HXT 9 gms ( 1.5 Kg) servos will work , need suggestions from forum. Will upload the pictures soon. Title: Re: Coro MIG 7 : Build LOG Post by: Mjet on November 22, 2012, 10:25:29 AM Fuse completed , here is the pictures
Title: Re: Coro MIG 7 : Build LOG Post by: koushik on November 22, 2012, 01:16:16 PM Good one Mjet, and I agree with you that the box shaped planes though easy to make with coro are boring beyond a point. I too downloaded the plan+buildlog from the Davewest link but lack the will to start. Iam currently making one box shaped mid winger in coro. Maybe when you complete and post the maiden video I'll push myself to try this out ;D ..
How you made those round formers btw? using wood? did you sand it to shape? Title: Re: Coro MIG 7 : Build LOG Post by: Mjet on November 22, 2012, 01:43:20 PM Thanks koushik for good words, round formars made from coro only. Ply formers are not required , we can double the coro formers.
I used only two ply formers and filed to round shape. you can file and get the desired shape very easily by using RUSK File. I have made the wooden propellar for this model by using this Rusk File. will post the pictures of wooden prop making process. Title: Re: Coro MIG 7 : Build LOG Post by: sameermaha on November 25, 2012, 12:19:20 PM Mjet sir,
where can i get coro sheets?? ..... is it scratch or i can buy it at stationary ?? what do they call it in hindi?? Title: Re: Coro MIG 7 : Build LOG Post by: smithraj on November 25, 2012, 01:12:40 PM hi.. You got the sheet in pune . Kings papers , Raviwar peth bhore ali. coro plastic.
Regards subhash cell-9922225585 Title: Re: Coro MIG 7 : Build LOG Post by: arun.sreelakam on November 25, 2012, 01:21:54 PM in india its coro plast is known as sunpack... just enquire for sunpack of desired thickness in any plywood stores... :) here in kerala it cost abput 100 for 8x4 size....
:thumbsup: :thumbsup: :thumbsup: Title: Re: Coro MIG 7 : Build LOG Post by: sameermaha on November 25, 2012, 01:25:16 PM sunpack .... in a plywood shop..... i am sure people here wud be correcting me " beta it is called sunmica not sunpack"....... hehe
anyways will try thks ... both of u Title: Re: Coro MIG 7 : Build LOG Post by: Mjet on November 26, 2012, 12:07:58 PM Hi Sameer,
As mentioned above , that the local name of Coro is "SUNPACK" and you must get it in Nagpur. You can search with the shops , who are involved in Screen Printing. The prices varies between Rs 100 - 140 for 8x4 sheet. Title: Re: Coro MIG 7 : Build LOG Post by: sameermaha on November 26, 2012, 12:11:40 PM Hi Sameermaha, plz abbreviate it to sameer....Screen Printing. thks for the tip....... my cousin owns a screenprinting shop........ he is sure to knw..... thks a lot Title: Re: Coro MIG 7 : Build LOG Post by: Mjet on December 14, 2012, 09:05:45 PM Fuse and wing completed
Title: Re: Coro MIG 7 : Build LOG Post by: Mjet on December 25, 2012, 10:38:40 AM Today I have taken maiden flight of My MIG, but model was moving in a circle (antilock wise) on ground and not able to take off :banghead:. Tail wheel was Ok.
After adjusting under carriage, model has take off (20-30 feet only), but unstable and back to ground (left side). Requesting members for suggestions to correct the model. Thanks and Regards Mohan Title: Re: Coro MIG 7 : Build LOG Post by: SunLikeStar on December 25, 2012, 12:43:24 PM You should try hand launching it till you trim it out then go for ROG. Was the CG accurately marked and the model balanced; sound like a tail heavy plane. Not sure tho, a video would have been very helpful :-\
Title: Re: Coro MIG 7 : Build LOG Post by: Mjet on December 26, 2012, 09:49:42 AM I could not take vedio :banghead: , but will post the vedio after correction .
Title: Re: Coro MIG 7 : Build LOG Post by: Mjet on December 27, 2012, 11:35:15 AM Hello all,
Need suggestions and inputs from senior members, pl help. Thanks and Regards Title: Re: Coro MIG 7 : Build LOG Post by: sanjayrai55 on December 27, 2012, 11:59:32 AM Not too sure, but check if the model weight distribution is OK, i.e. hold at spinner and end of tail and see if it balances. Also, is the Tail & Vertical Stab properly square? Any warp in the wing or control surfaces?
Title: Re: Coro MIG 7 : Build LOG Post by: ponappa on July 28, 2014, 07:12:09 PM Any more information on this project?
Title: Re: Coro MIG 7 : Build LOG Post by: Mjet on July 28, 2014, 08:04:21 PM I could not correct the rolling of model on ground, so I lost my interest and I closed this project.
But if you need any help,pl feel free to ask. Title: Re: Coro MIG 7 : Build LOG Post by: ponappa on July 29, 2014, 10:24:05 AM check this url out if it solves your problem
http://www.spadtothebone.org/misc/toein.htm (http://www.spadtothebone.org/misc/toein.htm) Would love to know the flight details and how did you do the nose cone? |