MOC: Technic B-25 Mitchell

Hello everyone,

Well it's been over a year since I last posted here however I've finally finished my B-25 I've been working on for just over a year and a half. It's had several major rebuilds of certain sections since the WIP topic I posted but It's finally at a point where I can call it finished and start on something else.
Some basic info first, It's wingspan is roughly 3ft (around 92cm), Fuselage length is about 2ft 6in (around 76cm), It has a XL motor for each engine. so that makes two, It has two M motors powering the landing gear and it also has working flaps, ailerons, rudders and elevators (All controlled though the control column and gear wheel in the cockpit.). The top turret can rotate 360 degrees as well. As you may notice in the pictures below I ended up not being able to fit the battery box into the actual model as there just wasn't enough room for it, As it turned out though it came in handy as one of the annoying flaws with this model is it won't actually sit on it's landing gear, It just falls backwards so the battery box was just the right hight to prop it up. I spent a long time thinking about the problem but couldn't come up with a solution for this particular model so it's just something I'll have to keep in mind for future aircraft with tricycle landing gear. Anyway, on with the pictures.

More pictures can be found on Brickshelf:

http://www.brickshelf.com/cgi-bin/gallery.cgi?f=563243

And on Google Photos:

https://goo.gl/photos/JHBLxofc9MjLfL9X8

Finally a Video of it:

Thanks for reading and hopefully the next LEGO MOC will come a little quicker than this one did. ;)

MOC: Technic B-25 Mitchell WIP Part 13

As I haven't posted pictures of the actual model for a while I thought I'd do just that and show you what it's looking like now. I've built a possible design for the tail turrets canopy but I'm not 100% sure on how it looks at the moment but it's a start at least.

And a picture of the overall progress I've made with it.

MOC: Technic B-25 Mitchell WIP Part 12

I've been working on the engine design a bit more over the past few days and something I noticed was that the design I made before had 8 cylinders however the actual radial engine in the B-25 is a 14 cylinder twin row radial engine so there should actually be 7 cylinders at the front. I had to think about it for a while but I've come up with a possible design for 7 cylinders. I'm thinking this is going to be more or less the final design for the engines as I've got the look somewhere around where I want it and it lets the axle spin freely. What do you all think?

MOC: Technic B-25 Mitchell WIP Part 11

Another quick update today on the engine design of my B-25 project. I managed to come up with a possible design for the radial engines in the B-25 in LDD. What do you all think?

MOC: Technic B-25 Mitchell WIP Part 10

A bit of a different update today as I haven't got much progress done on the actual model however I have been trying to come up with a good design for the front of the engines. I've made this in LDD as I don't really have the pieces to make it on the actual model and I'm just trying to come up with ideas at the moment.

I think it looks better than it looks now but I kinda want a design for a radial engine to go in the front however I haven't though of one yet. But anyway that's all for this time.

MOC: Technic B-25 Mitchell WIP Part 9

Just a very quick update today as I haven't gotten that much done over the past week.

The main thing that I focused on this time was the front section. I've built the preliminary design of the cockpit canopy and nose canopy and although there is still a few bits to be added I think it make the nose section look much better.

And that's everything, Yep told you it would be quick. Anyway, Till next time.

MOC: Technic B-25 Mitchell WIP Part 8

I've got some more work done on my B-25 over the past week so I thought I'd post an update to tell you all what I've done.

I've improved the tail section a bit by adding beams going straight up the under side of the fuselage as well as building a bit more of the tail it's self.

I've also built a preliminary design for the tail gun.

Another thing I did was put in the battery box and IR receiver where they will go. I'm not 100% happy about how far the battery box sticks out the top but I'm not sure how to solve that one yet.

And thats it for this update, Till next time.

MOC: Technic B-25 Mitchell WIP Part 7

Another quick update today as I've made a bit more progress on the B-25 so here's what's been done.

The main thing I've been focusing on over the past few days is the tail section which as you can see is starting to look a bit more like the real thing. I still have a way to go yet but I've finally got the control surfaces on the tail working well so the only control surface left to get working is the ailerons which I can only to do once I've actually made the wings.

Something I forgot to put in the last update was that I had actually built the propellers. They are a similar design to the propeller on my Spitfire but smaller as this model is in a smaller scale.

Finally as usual a shot of the overall model.

And thats it. Till next time.

MOC: Technic B-25 Mitchell WIP Part 6

Finally got some more work done on my B-25 over the weekend so here's what I've done. I've added the other side of the nose section as well as completely replaced the control mechanism for the elevator control to using beams as the original way of doing that (using axles) wasn't going to work. I've also run the rudder control mechanism to the tail as well although I haven't added the actual rudders in yet.

I also came up with a preliminary design for the top turret.

And thats everything. Till next time.

MOC: Technic B-25 Mitchell WIP Part 5

More progress has been made on the B-25 in the past week so here's what I've done.

This past week I tried to focus on the placement of the motors for the landing gear and the mechanism to connect them to the actual landing gear. I also added the two main beams where the wings are going attach to.

This is the motor for the landing gear on the wings.

This is the motor of the nose landing gear.

And as usual a picture of the over progress, I'll probably work on the tail section a bit more and get the battery box mounted as well this next week.

MOC: Technic B-25 Mitchell WIP Part 4

I've managed to get a bit more work done on the B-25 over the past week so I thought I'd post another update on what I've done. First of I've done a bit of work on the control system so now the control stick has all it's outputs and I just need to connect them all to the control surfaces which will be done once I've actually made the control surfaces.

These two outputs are for the ailerons.

The other part I worked on was the tail. I replaced some of the 1x16 studded beams with 1x14 studded beams and started on the very beginnings of the tailplane.

And finally the overall progress I've made on the fuselage.

MOC: Technic B-25 Mitchell WIP Part 3

Just a quick update today as I haven't gotten much building done in the past week. I did a bit of work on the tail section and I think I've come up with a design that should be quite strong once it's finished. It's also now getting close to how long it's going to end up being once finished.

I have actually run out of 1x16 studded beams so I might replace some in the tail with 1x14 studded beams.

And thats it for this update. Hopefully I get a bit more building done this week.

MOC: Technic B-25 Mitchell WIP Part 2

I've done quite a bit of work on the B-25 so I thought I'd post another update and show what I've done since the first part. First up I replaced the left and right landing gear mechanism with a bit better design that should be a bit stronger and work a bit better.

This is actually the beginning of the right engine bay.
The landing gear mechanism is a bit easier to see on this side as it isn't built up as much.

The landing gear in the down position.

Next I built the control stick and peddle for the ailerons, elevator and rudder.

As you can see this is more compact than the control system I built for my Spitfire.

I've only added one peddle for the rudder as to try and fit two inside such a small area would
be difficult so I thought I'd go for just one to make it a bit easier. I've also added the front landing gear as well.

Lastly a couple of shots of the overall progress I've made.

MOC: Technic B-25 Mitchell WIP Part 1

Well I finally started work on my next Technic aircraft, A B-25 Mitchell. It's going to be a similar size to my Technic Spitfire and mostly the same type of functions. The planned functions I have at the moment are:

• Both engines powered by a PF XL motor each.
• Working ailerons, elevator and rudder all controlled from the cockpit.
• Working Landing gear powered by a PF M motor.
• Working Landing flaps also powered by a PF M motor.
• Working turrets.

I've so far built part of the left engine bay with the landing gear leg and the basic structure of the center of the main fuselage. First a couple of pictures of the engine bay:

Next up is the section of main fuselage I've built so far:

I'm not sure how long this MOC is going to take as I don't currently have all the pieces needed and affording them is going to be interesting to say the least but I will try and finish it before the end of the year hopefully.

And thats it for now, Hopefully I'll have another update for you around this time next week.

MOC: Technic Spitfire

Well it's been just over six months but I've finally finished my Technic Spitfire. This has been one of the largest and most time consuming builds I've done and I'm glad I've finally finished it to be honest. First a bit of info about it:

Wingspan: 90cm
length: 86cm
Propeller diameter: 29cm
Functions:
Motorised Engine and Propeller.
Motorised Landing Gear.
Working Rudder, Elevator, and ailerons controlled from the cockpit.

Now we move on to the pictures. First up a few different view of it overall.

Next up a close up of all the functions and interesting bits.

A close up of the propeller so you can see the design a bit better. I'm quite pleased with how this turned out.

A close up of the engine and XL motor that drives the engine and propeller.
The final gear ratio is 5.001:1.

The left side is for the ailerons and the right side is the landing gear.

Close up of the M motor that powers the landing gear.

Close up of the control surface control system.

The tail section. This was a bit of a pain to get right.

The rear of the tail section.

The original way I did this was with gears but that made the Elevators way to loose so I came up with this instead.

A close up of the landing gear down.

A close up of inside the Cockpit.

A view from the cockpit as if you where sitting in it.

Next up a couple of pictures with the landing gear up.

Finally a video of all the functions.

And thats it. I hope you like it. :)