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Old 12-29-2010, 05:56 PM
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Rubenandres77 Rubenandres77 is offline
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Originally Posted by Leif Ohlsson View Post

As far as I can figure out, the little black dot you're asking about in part 109 would be a sort of graphic interpretation of a spark plug. There should be a similar one in the black area on the other side of the part. Do I detect a whitish area there?

Not that you should worry about it now, but the oval shapes which you have drawn in different sizes probably represent cylinder head cooling fins. I think they are one size only in the original. But then again, they should be drawn at 90° to what they are now. If so, this is a fault in the original design (these things do happen...).

A small correction since I noticed - the two topmost fold lines are drawn as a "Fold up" lines, while they should be "Fold down", as you have drawn it on the part itself. Also, as far as I can figure out, the vertical fold line should be "Fold down", whatever way the original is drawn. That is the only way I can make sense of the folding of this part. Step 83 in the instructions carries a reasonably good illustration of how part 109 is folded. All folds are 90° I think.

As for part 114, I will definitely cut it out as regular, as you expected to start with, whatever shape the original is drawn. See illustration at step 84 in the instructions. Nothing but a regular pattern makes any sense, I think.


Leif, thanks for your observations. They truly help me a lot.

It was fool from me not to see the instructions.
They are clear enough to see that the folding lines
were indeed wrong in my version and how some parts work.

And yes, once some contrast and brightness is applied,
a white dot appears amidst the black area on the other side.
Most probably, as you said, a spark plug.

I'm not sure about the cooling fins.
So I decided to make two versions:
one as the original model presents them, and one at 90º.
The second version will probably be available as an add-on option.
Re-colouring the Ford Trimotor by Peter Zorn-20-109a.jpg

I also redraw 114, to make it more regular.
The difference is minimal, but I think it really works.
Re-colouring the Ford Trimotor by Peter Zorn-21-114b.jpg

A few minutes ago I was looking for visual references
to confirm the correct design of this parts, and found
a couple of nice photos that I would like to share:

One from Airliners, that shows an abandoned tri-motor.
The engines can be seen without cowlings,
showing part 114 in all its nakedness.
Photos: Ford 5-AT-C Trimotor Aircraft Pictures |

And another nice picture that made me laugh, from a restoration project:

I really love that sentence!!!
The photo is found at:
Ford Tri-Motor List

Now..... I also found a couple of links
that will be useful as reference for details of the parts,
and that any person building this model will find more than useful:

Photos of the original N9683 that Peter Zorn out in paper:
(Russian text, but several nice photos)
?????? ???? - ???????????? ??????????????? ????? ? ?????????? ?.3:Ford Tri-Motor(????????? ????????)

Photos of another beautiful tri-motor:
(also Russian, but wonderful images)
igor113 - ????? 2010 ?.20:Ford Tri-Motor ?.1: ?? ??????????? ???????

A restoration of a tri-motor in 2002:

And yet another restoration:
Rebuilding the Ford Tri-Motor Planes N1077 and N7584

a link to an RC forum where a person is making
a Ford Tri-motor from scratch....
using wood and corrugated metal sheets as main structural materials
Scratchbuilding a 1/32 1927 Ford AT-4 Trimotor - ARC Air Discussion Forums

Now is almost time for dinner.
See you!
Rubén Andrés Martínez A.

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