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Author Topic: Thorneycroft Amazon WF/AC6/1/Coles Mk VII, series 2.  (Read 37768 times)

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jpten

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Re: Thorneycroft Amazon WF/AC6/1/Coles Mk VII, series 2.
« Reply #84 on: March 07, 2020, 10:19:16 AM »

Being British it needs to have a tea kettle hanging somewhere.
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Shessi

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Re: Thorneycroft Amazon WF/AC6/1/Coles Mk VII, series 2.
« Reply #85 on: March 07, 2020, 02:52:42 PM »

Being British it needs to have a tea kettle hanging somewhere.

Ha!...yes J, I like the idea of that! 

I know it's still a way off, but if you're up for it Pete, maybe do a 'working' version with tools, rags, jerry cans etc, and of course, a kettle!?

Shessi
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David Prosser

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Re: Thorneycroft Amazon WF/AC6/1/Coles Mk VII, series 2.
« Reply #86 on: March 07, 2020, 06:27:15 PM »

I agree, that's an excellent idea. Nothing like a nice pot of Yorkshire tea to start the day.

Mission_bug

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Re: Thorneycroft Amazon WF/AC6/1/Coles Mk VII, series 2.
« Reply #87 on: March 08, 2020, 04:00:44 AM »

Guys, already there but hidden from the sarge. ;)


The kettle, mugs and biscuits are always tidied away after use and put in the drivers cupboard
under the seat, he brews up while his mate operates the crane:




We have to get our priorities right after all, tea fuels the world, nothing would get done without
a tea break.  :D


Wishing you all the very best, Pete. ;D
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Mission_bug

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Re: Thorneycroft Amazon WF/AC6/1/Coles Mk VII, series 2.
« Reply #88 on: March 10, 2020, 03:47:21 PM »

Hello guys, work has been even slower recently but here is the progress. ;)

Trying now to make the elements that are part of the boom and carry the cables, the box that holds
the cable wheel mid way needed a few brackets to hold the box and wheel in place, Grey bits:




There is a long rod that extends the length of the boom to the box, I assume this activates something
inside so did what I could from Photographs:



I do not like having things in the air with no placement but cannot tell for sure just where the rod attaches
so I made a contraption of sorts to connect it to another length of rod that goes down to the crane cab.
My thoughts are that it could be a cable like you would find find on a bicycle for the brakes, a strong outer
shell with a moving cable inside that once pulled activates the rod to the box and moves something, what,
who knows but I had to take in consideration the booms movement so just imagine the two rods are connected
inside the contraption somehow. :D

The other thicker  Green coloured cable is the conduit for the electrics to the box, the cable moves through
it and then down the crane arms to the crane cab, a few clips hold it in position:



I cloned the cable wheel I already had to make the others along the boom and to what will be the hook, the
rear three are a simplified version that has the cross arms removed and a cylinder running through all three,
this helped with space so I could have all of them individually mapped:



A closer view of the electric cable and the rod connector with all mapping done:



I have a hospital visit tomorrow so the procedure I have could put a hold on things for a few days but
when I can carry on the cables and their drums are next up along with the hook as well as a few control
boxes and their wiring on the arms to hopefully bring the crane itself to a close. ;)


Take care.


Wishing you all the very best, Pete. ;D
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Flying H

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Re: Thorneycroft Amazon WF/AC6/1/Coles Mk VII, series 2.
« Reply #89 on: March 10, 2020, 03:57:20 PM »

Can the rod be some kind of security stop to keep pulling the hook too high and strain the cables?
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And you can fly, high as a kite, if you want to.........

Mission_bug

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Re: Thorneycroft Amazon WF/AC6/1/Coles Mk VII, series 2.
« Reply #90 on: March 11, 2020, 07:13:04 AM »

Can the rod be some kind of security stop to keep pulling the hook too high and strain the cables?

Certainly a possibility Flying H, I cannot rule that out for sure as I do not have anything definite myself. ;)

Here is a photograph from the link of the Belfast restoration:




As you can see the rod itself is very thin, however, there appears to be a thinner part inside that attached
to what is some kind of nut which is why I thought of a small cable in there.  The rod seems to be part of a
long metal plate but I cannot tell if any of the parts actually move although on another photo there is what
could be a pivot/screw at the bottom but it is unclear.

It could be some kind of electrical circuit also or alternatively carry some kind of lubricant although I think
too thin to carry any large quantity of liquid, hopefully some time before I finish the model some of these
questions might have a answer.

There are things in the driver cab that seem unique to this vehicle as well, it is proving to be a fascinating
subject to model.

Did any other of the combatant nations use similar vehicles or is this recovery set combination unique?

Take care.


Wishing you all the very best, Pete. ;D


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jpten

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Re: Thorneycroft Amazon WF/AC6/1/Coles Mk VII, series 2.
« Reply #91 on: March 12, 2020, 04:18:11 PM »

  My best guess is that it is simply the transfer assembly that switches the motor direction (reel out/reel in) when the operator shifted the lever.  The world was very much more analog back then.
  On another note I found a link to a pdf of the Airfix model's indtructions.  https://www.scalemates.com/products/img/3/7/0/109370-32-instructions.pdf
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Sikshoota

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Re: Thorneycroft Amazon WF/AC6/1/Coles Mk VII, series 2.
« Reply #92 on: March 12, 2020, 05:30:16 PM »

Hi All

I might be off the beaten track with this, but here's what it looks like to me.

It appears to be a solid actuating rod (controlled by the operator) that is connected to either a Brake or Clutch Lever (probably Clutch?) by way of an Angled Ball Joint (shown with lock nut).  A common control method used on that era of machinery.  Admittedly, I'm unable to see the other 'Operator end' of this so I may well be wrong. 

If it is as I believe, then it would need to be a Solid Rod Linkage system from the Operator through to the section shown in Mission Bugs pic.   

Here's some examples...















Hope this is useful info...?

Cheers
S'
Sikshoota

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Mission_bug

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Re: Thorneycroft Amazon WF/AC6/1/Coles Mk VII, series 2.
« Reply #93 on: March 13, 2020, 05:24:06 AM »

  My best guess is that it is simply the transfer assembly that switches the motor direction (reel out/reel in) when the operator shifted the lever.  The world was very much more analog back then.
  On another note I found a link to a pdf of the Airfix model's indtructions.  https://www.scalemates.com/products/img/3/7/0/109370-32-instructions.pdf


Hi All

I might be off the beaten track with this, but here's what it looks like to me.

It appears to be a solid actuating rod (controlled by the operator) that is connected to either a Brake or Clutch Lever (probably Clutch?) by way of an Angled Ball Joint (shown with lock nut).  A common control method used on that era of machinery.  Admittedly, I'm unable to see the other 'Operator end' of this so I may well be wrong. 

If it is as I believe, then it would need to be a Solid Rod Linkage system from the Operator through to the section shown in Mission Bugs pic.   

Here's some examples...

Hope this is useful info...?

Cheers
S'
Sikshoota


Great ideas guys, thank you very much. 8)

Could be any or a little of all, certainly a control lever of sorts, the photographs from Belfast show a rod going back down to the crane cab but nothing can be seen of whether it joins the one along the boom so I had to assume they were connected hence my contraption, hopefully believable. :D

A clutch makes sense to steady the progress of the cable because the way the cable and wheel are where they are seems to indicate that wheel might be there to take the strain by pushing down onto the cable and transmit it along the load.


Hopefully one day the Belfast team might release a book of their restoration of this vehicle and answer some of these questions and put us out of our misery, until then speculate away guys it gives us things to consider as I build.

I have had a go at creating the cables, here is my set up from looking at various photographs:




Closer view with mapping started, that piece will be cloned and take up the next two positions:



The cable is made from a torus, it creates a ring inner and outer and I reduced it as thin as possible
to try and match the wheels:



The basic shape had a section removed and the vertices pulled down into position on the lower pulley
drums.  A section was used to also make the end of the cable where it goes to the end of the boom,
this shown in Red polygons was then welded to other sections some inverted as for the hooks wheel
and some stretched out from other parts of the cable.


My version is most likely wrong, however, without firm information it is the best I have for now and so
I will continue the build as it is while continuing the search for better information. ;)


Take care.


Wishing you all the very best, Pete. ;D
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Shessi

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Re: Thorneycroft Amazon WF/AC6/1/Coles Mk VII, series 2.
« Reply #94 on: March 13, 2020, 11:03:57 AM »

Hi Pete,
Ha great this isn't it?!

Yes I think S has nailed it, it is a unversal ball joint (UBJ). 

The electrical cable could possibly carry cable speed and issued length info from something inside the boom-box (do you remember those!! ha ha) to the operators consul??  And possibly the rod with the UBJ linkage on is an emergency cable speed/length controller connected to the drum, if the cable speed rises above or length reaches a certain point it automatically stops the drum, or if the operator tries to lift something above the max lift weight of the boom (early strain gauge), or the boom is above or below a certain angle??

Or I could be talking a load of crap and totally wrong!  o_O

Shessi
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Mission_bug

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Re: Thorneycroft Amazon WF/AC6/1/Coles Mk VII, series 2.
« Reply #95 on: March 14, 2020, 08:57:51 AM »

Hi Pete,
Ha great this isn't it?!

Yes I think S has nailed it, it is a unversal ball joint (UBJ). 

The electrical cable could possibly carry cable speed and issued length info from something inside the boom-box (do you remember those!! ha ha) to the operators consul??  And possibly the rod with the UBJ linkage on is an emergency cable speed/length controller connected to the drum, if the cable speed rises above or length reaches a certain point it automatically stops the drum, or if the operator tries to lift something above the max lift weight of the boom (early strain gauge), or the boom is above or below a certain angle??

Or I could be talking a load of crap and totally wrong!  o_O

Shessi

Maybe one day we will have a definite answer Shessi, for now I think there is merit in all the suggestions so far. 8)

Anyway, on we go, mapping of cable done:



First of all I tried a cable texture, however, it did not really show the detail so I just made it a single
colour:



Finally extracted a few test meshes from the 3d program, there were a few alterations needed but
here are the first images in game:








The hook still has to be made, I will alter the parts seen above for the raised boom once that is finished
because there have been a few alterations along the way to the boom and arms that means replacement
of those already in use so I might as well do that with everything complete for now it was enough to see
how things looked so far to determine any alterations necessary. :D



Take care.


Wishing you all the very best, Pete. ;D

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