Author Topic: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)  (Read 8327 times)

Dave Winfield

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #22 on: September 04, 2012, 12:27:57 PM »
continuing with the Body panels...

I am now assembling the sides (as one full piece which I will later
attach to the front and rear assemblies)

I have preplanned a simple bracket ledge that will sit onto the Frame.
This is how the Body will sit on the Frame and some Floor parts will sit on top
of those same brackets.

I will include a template that can be used to position the brackets.
(You can see the template at the far right of the photo)



Heres the fully assembled side panel...minus some internal framing.
I found its better to leave the frame/floor brackets until after the panels are all assembled.



And the same assembled parts, from the outside.
The colour/texture of the outer panels was a bit of an issue.
I originally wanted to go a little darker than the sponsons, but I settled on this mottled metal look over top of the
same value of gray as the Bovington Museum Tank.
I think it works, but I may go back in and add a little more surface weathering to the lower and underside areas...(?)

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Dave Winfield

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #23 on: September 04, 2012, 12:42:01 PM »
So, heres the four sides of the Body, ready to assemble...
No real surprises...everything lined up okay.
I have made one small adjustment to the lower rear plate that will be the last part to close
when fitting the body to the chassis.



and here we go, assembling the parts.
Like any box assembly, it requires a little fumbling to get the parts and sides together while gluing
but it all sits nicely on a flat surface, so the assembly is not very difficult at all.



...
Up to this point I have put a lot of thought into the assembly method
and I have decided to make a change to my original idea of a "lift-off body".

Fitting the body to the chassis requires making some design changes to the original
Tank and its actual assembly.  Obviously the real tank was not designed to have a
removable body... so plates were welded, bolted and riveted in place permanently.

I have to make some design changes to accommodate the "lift-off" body
but it is becoming a little more of a challenge to make sure the Body,
with all its internal components,  will easily fit onto the finished Chassis (with all its components).

So, I have made a compromise...instead of the entire Body lifting off, I will make a "lift-off" ROOF.
I'll use the angle brackets that go around the perimeter as the locator, and make the flat roof
panel removable so you can view the interior.

Anyway, heres the assembled body, test-fitted to the Chassis to check the alignment and clearance.
Everything is still looking good. Clearances look good.
Next step is to finish the internal ribs and framing and then fit the partial Floor.





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Vermin King

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #24 on: September 04, 2012, 06:06:30 PM »
Exceptional model.
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Only people I haven't embarrassed ... yet

Dave Winfield

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #25 on: September 04, 2012, 06:18:20 PM »
Thank you kind sir(s)....

the model is actually quite entertaining so far.
Probably since I have had no real design issues.

Fingers crossed.
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Dave Winfield

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #26 on: September 05, 2012, 10:11:08 AM »
work continues....

Rear Access Hatch
obviously a hinged door, but I had to guess at a method of making it work.
I do have one photo of the interior that gives a vague idea of how the Hinges
are in place, but I wasn't sure how to make it work.



In the end I created a pair of hinges, a little different than the real thing, but
at least the Hatch opens (and closes).
I might revisit this and try another design.




...

outside again, and its time to fit the covers that fit over the external drive sprockets.
Basically just a "flap" of metal and a couple of braces underneath, that protect the exposed
gears on either side of the tank.




...
Photos of the interior are scarce...the only reference is a handful of photos taken recently when Willie was restored
for Museum display.  Unfortunately the majority of the interior is long lost.  So, I have to do a lot of guessing.

Willie has no underside to its body. The Frame/Chassis is exposed to the ground.
But I have to imagine some "floorboards" inside to allow crew to move around a little easier
and avoid falling through the machinery.
Referring to pics and plans of later Mk1-IV Tanks, wood floor structures were used in various places.

I have imagineD a simple wooden board floor at the rear entry and over the largest open areas of the chassis.
I've also copied the small shelf that spans the Gearbox/Driveshaft area (as in the Mk series tanks).
For now, this floor just sits on top of the side body rails, and on top of the Frame rails.
I might leave it unattached to allow removal if necessary, although once the Fuel tanks and Radiator are in place
it will be impossible to remove the floor.






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Dave Winfield

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #27 on: September 07, 2012, 10:09:53 AM »
I went ahead and assembled the Roof plate...as a separate removable part.









My first concern was the rigidity of the part.
I added a fourth layer of 100lb card.
As an attached roof plate the part it will work great, but as a separate removable part
you are dealing with some twist and flex that is a concern.



Anyway, the roof itself fits the body quite well.
However the overlapping edge brackets and joiner strips cause a little bit of fit issue.
(These would not be an issue if you were permanently attaching the roof part)
And the Body sides tend to flex and there are gaps around the roof because theres
really nothing at the top to hold the body in shape.



First thing you notice is the size of the Turret opening and how much of a view it gives
you (of the interior).  Its obvious that this opening is a sufficient viewing port for the interior.





Add to that the rear Hatch, which opens nice and wide and the smaller portals in the front, and you
can get a pretty good view of most of the interior.



Which brings me to my final decision.
The builder can change the assembly and display options and do whatever they want.
But I am going make the roof plate part of the Body.
The instruction will be to attach the roof as part of the body using the same angle brackets
and rivet joiner plates, and leave the Turret plug as a removable part.
This will guaranty a complete body shell that will hold its shape and strength a lot better.






DAVE WINFIELD - GO TO WWW.CUTANDFOLD.INFO FOR MY DESIGNS AND LOTSA FREE STUFF!

Dave Winfield

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #28 on: September 07, 2012, 10:15:34 AM »
I also finished the Turret plug.
Its two layers of cardstock for the top/outer discs
and four layers for the lower discs that will fit into the roof opening.

I thought a little overkill was necessary to keep the plug stiff and in shape
and to keep it in place when you insert the plug into the roof opening.





The final fit is good and it lifts out quite easily.
It really makes the vehicle look like the Museum Tank!

DAVE WINFIELD - GO TO WWW.CUTANDFOLD.INFO FOR MY DESIGNS AND LOTSA FREE STUFF!

Vermin King

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #29 on: September 07, 2012, 11:40:24 AM »
Excellent work once again.  I'm thoroughly enjoying watching the development of this little gem.
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Dave Winfield

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #30 on: September 10, 2012, 08:43:17 AM »
I can't believe it but I think I am getting near the end of this build!

There are still a number of small parts and details to sort out,
and theres still a lot of work to get the instruction pages finished
but the majority of the design is done and assembled at this point.

I decided to finish up the attachment of the body, so that means a few final items....
like the forward portal covers.



...
to close up the body, means placing the final interior details...
starting with the Pedals and levers that control brakes and steering.
I also made up the Steering Wheel.

These are all laminated parts that require edge colouring. Ideally a little time should
be spent shaping and smoothing the edges to get better colouring.  I am guilty of rushing here.



And heres a few shots of those parts installed.
- The steering wheel can be installed into the Body at any time...but easiest before the body goes on I think.
- The floor pedals and levers just sit on top of the forward frame (hidden under the bench seat) so they can be
installed on to the frame before the body is fitted...or after (I guess its up to the builder).
- And finally the bench seat can go in last (into the body)







Fitting the body is easy enough...just slip the front frame up, and into the body.
Then lower the rear body over the back of the Frame.
I put a little glue under each of the side angle brackets and pressed the body to the chassis.



Then close up the rear body by gluing the last body panel.
Without this panel loose you cannot get the body over the chassis.



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Dave Winfield

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #31 on: September 10, 2012, 08:47:04 AM »
To finish I put the Floor boards in place
and fitted the rear compartment that houses the Fuel tanks and Engine Radiator.
The Radiator is visible at the top of this compartment, but it will be completely
hidden once the roof plate is attached.



Then, after a few small trims to the edge bracketing, I installed the roof plate.
I worked my way around, one section at a time, and glued the roof plate to the main body.



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Dave Winfield

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #32 on: September 12, 2012, 12:31:58 PM »
Putting on the last few parts now!

Still got a couple more parts to add,
but this is Hydraulics equipment on the rear panel of the tank.
This large Hydraulic cylinder is what powers the pulley system that
lifts and lowers the chase Steering Carriage.
A large Oil reservoir is also seen next to the cylinder.

I still have to add some upper and lower reinforcing plates to the body.





I have seriously considered adding the Steering Carriage to the model...but...

the Museum displayed Willie does not have the Steering carriage,
and many photos show the tank in operation without the Steering carriage,
and its a fact that the carriage was added as a Steering control after it was found
that the vehicle could not properly turn...

and I'm too lazy...

It might be something I will consider at a later date.
It would also be a great scratchbuild add-on for a builder to consider.

...
I decided to add the nose Tow Hook.
Creating a clean hole through the body panels (after they have been assembled)
is a bit of a challenge! lol Its something you should do before assembly.



...
I also added the main Spindle Hubs...caps...whatever you call them.
And I decided to attach the nameplates.





Other than a few small parts and tweaks, thats it. Willie is complete!
I still have to take a few display photos.
But the biggest thing left to do is the instruction diagrams and pages.
I have about a quarter of those done so far, but still a lot of work to do.

DAVE WINFIELD - GO TO WWW.CUTANDFOLD.INFO FOR MY DESIGNS AND LOTSA FREE STUFF!