Author Topic: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)  (Read 8323 times)

Vermin King

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #33 on: September 12, 2012, 12:46:32 PM »
Looks fantastic
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Dave Winfield

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #34 on: September 13, 2012, 10:45:07 PM »
its done! its done! its done! its done! its done!
ok everyone sing with me...
its done! its done! its done! its done!

want to see my Little Willie?
Full Gallery here: https://www.flickr.com/photos/65936213@N08/albums/72157648382977937









Next...Instruction pages and all those pesky diagrams!
If I am lucky, maybe the kit will be ready sometime in October.

Gee too bad there won't be a Paper category at the IPMS London show (in two weeks)
because Willie is definitely going!!
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 #35 on: September 13, 2012, 11:26:12 PM »
Single-handedly you are going to have them rethinking their position.  I also hope it generates interest, and of course, sales.
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Dave Winfield

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #36 on: September 23, 2012, 07:01:59 PM »
Getting ready to pack this model up (to take it to the IPMS show) and I noticed that
I had forgotten to attach the side Lamp mounting brackets on the body.

The factory vehicle had two swivel mounted lamps up near the front of the vehicle
on either side.
These were apparently removed during testing according to the available photos.
And the Lamps are not present on the Museum displayed vehicle.
(However the bracketry is)

So, I made up the brackets and attached them.
I also made up some lamps, but did not install them.
I will include them in the kit, but leave it up to the builder.
(Installation will require some wire cradles be formed)



...

I also took a bunch of new photos on the mat (base) I created for display at the show.
Looks good I think.







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 #37 on: October 08, 2014, 10:21:41 AM »

....................................

Little Willie update....two years later!

lol, seems really odd adding to this topic.
I can't believe so much time has elapsed since I designed this model!

Anyway...there have been some recent discussions over at the Landships forum, regarding Little Wilie.
Discussion about a "turret"
and new photos surfaced of the "Steering Tail" unit fitted to the Tank
to help with the original Bullock Tracks.

Along with some early photos of Willie (No.1 Lincoln Machine), before the Tritton Track system was installed.




Seems the original plan for the prototype Tank was the inclusion of a fixed cylindrical Turret
with Gun Ports and some sort of sliding/elevating forward gun.
The Turret was fitted to the first version of the No.1 Lincoln Machine, but appears to have been removed
(and the roof hole pugged) some time before the Tritton Track system was installed.

The Steering "Tail" was an early idea that was used extensively during testing of the Lincoln Machine
and then again used on the Mark 1 Tanks in actual service.
However, the Tail units went through at least three design variations and were deemed to be cumbersome
and uneccessary weight...making them more trouble than they were worth in operation.




I got the idea to create a "mod" kit for my No.1 Lincoln Machine model
consisting of the proposed Gun Turret and the Steering Tail(Carriage) unit.
Depending on what went into the modification, it might be a "add-on" kit to purchase
or just a free accessory.

After some deliberation, I decided the turret was innacurate for my model.
It was only ever installed on the first version of the Lincoln Machine...in its original track design
and long before it was dubbed Little Willie.
The turret was never functional (eg installed weapons) and was only present for a very short time.

The Steering Carriage (thats what I call it) was a permanent part of the tank, even though it was removed a fair bit
and went on to be part of the Mark 1 Tank (the vehicle derived from Little Willie testing).

So, work has begun on the tail unit..however, I am running into a problem with reference material.
I have some good photos of the original tail unit.
But there are obvious differences.
Comparing with Mark 1 Tank photos, there are even more differences.
And the photos I have to work with are no clear in many areas.
So, I am doing some guessing and some fudging of details.

For now...the wheels (and main axle) are done...on to the carriage framework next.

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 #38 on: October 11, 2014, 10:28:25 AM »
Well, this is turning out to be a much bigger challenge than I had anticipated!

I have built the carriage framework three times so far
and I'm still not sure I have got it right.

I was hoping the experts at Landships Forum would have some input, but they haven't been too much help.
One member (Helen) offered up some detailed info about the Mk.1 Steering Carriage, but it is quite different from Little Willie's.

And even Willie's tail unit changed drastically halfway through testing.
The photos I have of Little Willie (in the same state as my model is based on) don't show clearly all the parts of the steering unit.
So I am having to analyze, make assumptions and mostly guess about how it all goes together.

This is the Framework I have so far:





I don't know what framework parts I might be missing from the center and underside areas.
I still don't understand how that Leaf Spring connects to something at the center?
I still don't understand where the pivot for the steering actuator is.
I still don't understand where the (hydraulic steering) cables are routed and how they connect.

I might have to settle for a basic rendition...minus a few details.
Stay tuned.



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 #39 on: October 13, 2014, 04:38:23 PM »
So...lots of discussion now, over at the Landships forum.
lol I guess I whined loudly enough! haha

Lots of good ideas...and I was reminded to refer to some Willie plans that I have.
(I actually decided to ignore these plans earlier on, until I had a better understanding
through actual photos of what the construction might be.)


So, now, the discussion...and the Harley plans...are filling in the remaining gaps in the information.

I've got the framework all completed...just figuring some final details,
and then attempting to attach it all to the Tank itself.

This first pic shows the basic Carriage framework so far...the white lines were added to illustrate the routing
of the steering and lifting cables. (The unit lifts via the hydraulic system on the back of the Tank).





There is a small wooden deck to be fitted to the top of the frame.
And then I will fit some metal wire to simulate the steering cables.

I'm still trying to figure out the mounting for the Axle tensioner (which fits underneath the unit).

And then I have to figure out how to attach it all to the tank.
The unit is not that rigid or strong, so it must be handled with care.
And it is going to be difficult to make it detachable from the Tank.
So, I will be permanently attaching it...which will make moving the model around quite difficult.
(I have no idea how well its going to transport to the IPMC!?)

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

Tapcho

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #40 on: October 15, 2014, 02:38:51 AM »
It's a guessing game to design the carriage isn't it. Looking at this picture I found (from a Russian site) I see that your design looks a bit different.



(Photo credit: The Tank Museum, picture dated December 1915 at the Wellington Foundry, Lincoln)

The carriage frame is somewhat different than your's. Looking at this and other pictures there should also be some kind of a spring suspension with some chains underneath the carriage (maybe to give the system some 'downforce'). So the steering was done by yanking the cables to make the wheels pivot - right? Looking at your prototype there doesn't seem to be enough room for the wheels to turn neither there seems to be any joint in the wheel assembly to make it even possible. ;-)

I'm no engineer nor mechanic but those details seem odd. Another though: maybe the gizmo was not meant for steering but to offer a horizontal stability much like the carriage gizmo behind the dragsters? Would make sense considering for example running on uneven terrain or over trenches.

Tappi

Vermin King

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #41 on: October 15, 2014, 09:45:04 AM »
I never understood how the mechanism would help all that much with steering, so you may have a point about it acting as a 'wheelie bar'.  It is also possible that downward pressure would help the tracks to dig in better to do the turn.  I just don't know.
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Tapcho

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #42 on: October 15, 2014, 09:56:29 AM »
Exactly - like in dragsters preventing them from tilting backwards (in this case due to rough terrain not speed). And also provide extra length when crossing for example trenches and so on. Your guess is as good as mine or Dave's.

Tappi

Dave Winfield

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Re: 1/18 Scale Little Willie - First Tank (No.1 Lincoln Machine)
« Reply #43 on: October 15, 2014, 10:07:57 AM »
Tappi...I have a lot of reference photos but that photo (you have posted)
is actually one of my main reference photos.

The carriage changed a few times from the early Bullock version,
to the tritton Tank, and right up to the Mk.1 tank.
I am focusing on the steering unit seen in that photo, because my model is in the
Tritton Tractor vehicle just like in that photo.

My carriage model is only half completed in those last photos.
Thats why it looks incomplete.

Underneath the carriage is a ram and spring contraption.
It appears to be the same thing as a "recuperator spring" used on Field Artillery.
(This according to the experts at Landships forum)

The unit is actually a "tensioner".
It uses adjustable components and spring loading.
It connects to a bracket under the back end of the tank
and the other end is connected, by two lengths of Chain, to the outer ends of the Axle.

It serves as a tensioner for the carriage, when it swings upwards.

One of the big questions has been "why does the Tank (in the photo you posted) have two
tensioners attached end to end? Earlier photos show one longer tensioning unit. Later carriages
have one long tensioner. But in that photo you can clearly see two shorter units attached together."



...........................
I'm just getting ready to fit the completed carriage (model) to the Tank
...heres a photo of the steering unit, upside down, to show you the tensioner in place.

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