Hello again!
Here are the B25J Mitchell 1/17th Scale Build Plans that i finished yesterday.

Wing span: 48"
Wing Area 319 Sq.Inch
Estimated AUW: 750~800grams.

B25J Mitchell Build Plan Full (size 44"x42.5")

B25J Mitchell Build Plan Tiled (size A4)

I haven't started building it yet but will do it soon.

Thank you.
Enjoy.

Hey guys! A build thread on my B25J Mitchell plans. It is started by Richard.

Follow it here!!!

Thanks for the link and materials.

Quote from: Sumeet on December 21, 2011, 09:33:30 PM
Hey guys! A build thread on my B25J Mitchell plans. It is started by Richard.

Follow it here!!!

Here are some photos of B25 Mitchell in progress...!







Follow the thread on above quoted "Follow it Here!!!" link.

Thanks.

awesome build sir...
i know it requires a huge labor  in cutting so many foam pieces and that too with accuracy and then assembling those pieces to form such  a masterpiece..


regards.
hitesh

No its just matter of practice & patience and that's it. Anybody with a little experience in foamies can do this.

Thanks a Lot for the complement by the way.

Cheers.

Excellent....very nice job. Can't wait to hear/see how it fly's.

Wayne

Sumeet what a beautiful piece of work! Finish her get her ready. I can't wait for it to fly. Bravo!

Thank you VC sir and rcfoamcrafters. I am nervous for the maiden. I was thinking of two 1000~1100kv motors before but then I felt the speed and thrust would be less for this heavy model. So, I will use higher watt 1400kv Motors with Master Airscrew 8x6 3blade props. This way I am getting thrust to weight ratio around 1.14:1. The optimal Flight speed would be around 35~40km/hr.

Below are the screenshots of "Airfoil used" and "What Motocalc say about this plane" respectively.

Please give me some suggestions to maiden it...

An interesting link to help you detail this build:

http://www.rcgroups.com/forums/showthread.php?t=1558799&page=2

Sir! its same link that I have posted here in my previous post. I have done some research on the color scheme and finalized one. It is 345th Bomb group's color scheme with Apache Indians on tail fins and a custom nose job "Miss Shossana" that I made suitable to be kept at home and show guests (You know the Nose arts on Warbirds those days  ). It will have the name Col R Bond under the Cabin windows.
Based on below pics. Whole Plane and nose Art.

Gr8 Build sumeet, all the best for your maiden

another eye candy for you

Sorry to point this out Sumeet but the last posted photograph is not a B 25 Mitchell, it is a 4 Engined Consolidated B-24 Liberator.

http://www.rcindia.org/chatter-zone/an-interesting-consolidated-b-24-liberator!/msg87481/#new

@Gusty Sir: Thank you sir. I am begging you for some tips again for maiden specifically this model. This is my heaviest model ever, And I am pretty nervous. I don't want to crash it.
Thank you sir and thanks for the Eye Candy  .

@VC sir: I know VC sir, That is B24 Liberator. That would be my one after next design in a 50feet wingspan size. Did I say 50 Feet?

A senior hobbyist from Colorado, US, talked to me about them wanting to build a 25 feet and then 50 feet Foamy as an ultimate goal of their RC life. They were impressed with the B25J Mitchell plans I uploaded. So They chose me to design for them. Currently besides the B25, I am working on designing plans of a B17 Flying Fortress 25 feet Wingspan. And if it goes successful, I will do the 50feet Liberator for them.
Below are the pics of What is going on with B17 currently.







Any more Suggestions...are more than welcome.

 

I'm speechless...................

I was speechless too when I got the opportunity to design them that large.
It is more than I expect.

Thank you so much sir for your kind support and motivation...

Sumeet
She could be nose heavy considering reinforcements you have given, she is a low T/C wing, like you said will fly high speed, that is good and not too good, good for flying and aeros, not too good for high speed landing and landing run is required, i am sure it will fly well, just match the thrust.

PS
I am fighter pilot and lived Dolittle raids (http://en.wikipedia.org/wiki/Doolittle_Raid), eye candy was for the nose art and see the number of kills painted on its side ( you were intelligent enough to know that, i know, therefore meant for you and people with eyes   ). after a couple of sorties, some kills must come on in your aeroplane too, will look good.

PPS
all and sundry to note, i have been inside a Liberator, probably very few to have done that, read this article written by my course mates father on IAF's Liberator (http://www.bharat-rakshak.com/IAF/History/Aircraft/Liberator.html)

Gusty Sir, Thanks for the comments and that priceless article. I really love to read War related History. Thanks a lot.

Few more thing,
I have the option to program my radio for flaperons. Would that help me to land at slower speeds? Or I should look for anything else to improve landing performance? can using a low degree flaperons during take off as well help reducing the minimum takeoff speed? Otherwise I would have to find a longer Runway.

Oh well a great thing for me is "No unwanted torque roll at low speeds by rotating both the motors in opposite direction (I mean Clockwise and Anti Clockwise)". Is it Correct?

For matching the thrusts, More and more I can do is "Hope and do little tests, Checking the motor/ESC connections, that's all". Is there anything available in RC market to help matching the thrusts of both motors? Or any technique to match thrust of two Electric Brushless outrunner motors, That I don't know of?

I know I am asking too much but I just want it to be perfect and successful.

Thanks.
Waiting for your response Sir.

Cheers.

Quote from: Sumeet on January 22, 2012, 09:58:46 PM
Gusty Sir, Thanks for the comments and that priceless article. I really love to read War related History. Thanks a lot.

You are welcome,   Some of the broken ones were lying there near a graveyard near pune, had a chance of getting into them, felt it come alive, (didn't break a piece of it as a souvenir, like some did , and some i guess still do) later in life get into Caribous and Gnats and had  similar feeling. Once question for you. did you for once think i didn't know the difference between Mitchell and Liberator bombers that you required unasked for clarification.

Quote from: Sumeet on January 22, 2012, 09:58:46 PM
I have the option to program my radio for flaperons. Would that help me to land at slower speeds? Or I should look for anything else to improve landing performance? can using a low degree flaperons during take off as well help reducing the minimum takeoff speed? Otherwise I would have to find a longer Runway.

what i found of flaperon (People who own HK V2 radio wouldn't know, as it has no such function) is, though it helps, due to the loss of lift at low speeds when you move elev forward, ensuing sink, can be difficult to control and landing is not so smooth. can try with low degree of flaperon and increase as you go along, can fly it stock, no issues, choose smooth surface for take off roll, to prevent nose over, check rpm of both prop (as far a thrust balancing is concerned, this is good enough), you can also use Clockwise twisted and Counter Clockwise twisted prop used in the quad of same length and pitch to avoid torque effect (Be sure to balance the prop), remember twin engine flying is peculiar, side slips causes yaw and roll to opposite sides, she kind of wallows in turns, rudder trim is therefore important and fly balanced at all times. dont worry she will fly well,
Share the outcome

Alright Sir! Locked everything. I will do the needful to ensure thrust matching.
Sure will post results.

Thanks a lot for the guidance. 

Thank you Anwar sir, for making this thread separate. 

Cheers.

Hey post some more pics and also the pics of landing gears and motor mount.

Landing Gear and Motor Mount needs to be fixed before I shoot some Photos. 
For the information, The motor mount would be the typical Wooden Firewall motor mount with holes to screw motor on it. The Landing gear would be made by the Bike Tyre Spoke (around 4mm thickness). Nose gear is made up of a 2mm thick Hard Steel push rod, passed through those use & throw (Refill less) pen. The Nose gear is steerable and rotates into this pen, and Pen body is Hot Glued in the Fuselage. So, Pen acts as Hinge for nose gear to rotate on its axis. On the top of this rotating part, A servo Horn is CA'ed.

The Landing gear would also be bolted on a wooden firewall under the Horizontal plate of engine nacelle.

That is enough for now. Will update later.

Oh yeah! And forgot, I did the battery access magnetic hatch last night. Glued a long Velcro in the free space under the wing, SO, would be easy for me to adjust CG.