Most impressive locomotives in TT scale

Re: Most impressive locomotives in TT scale

Postby Arseny » Sun Jan 14, 2018 8:24 am

Mehano Blue Tiger ?

Mehano-220141_58855-30.jpg
Mehano-240889_58853-30.jpg
Mehano-240890_58854-30.jpg
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Re: Most impressive locomotives in TT scale

Postby krokodil » Sun Jan 14, 2018 10:16 am

I have a problem with these new generation vehicles - they are simple too long for a general domestic layouts. They are very nice on module meetings but at home they occupies often 30% of the available tracks on yards and let them to run with 3-4 cars is very far from realistic operation.
I had the same problem on my earlier US layout in H0 scale. Even when the layout was over 4 m long to operate a challenger, bigboy etc or a multiunit modern diesel train was almost impossible, or it was very unrealistic. The modern cars ( passenger and also freight) tends to be everyday longer, what simple eats up the available space.
For my recent TT layout ( over 30 m long tracks) I am collecting all shorter engines and cars to provide realistic operation. ( The long vehicles are reserved for module meetings).
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Re: Most impressive locomotives in TT scale

Postby Arseny » Sun Jan 14, 2018 10:55 am

krokodil wrote:I have a problem with these new generation vehicles - they are simple too long for a general domestic layouts.


Agreed. So, what about this one? :)

arnold-hn9039_cmyk.jpg
Arnold Accumulator shunting locomotive
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Re: Most impressive locomotives in TT scale

Postby krokodil » Sun Jan 14, 2018 12:14 pm

Something in between this and the blue tiger is mostly OK... :-)
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Re: Most impressive locomotives in TT scale

Postby Surovi » Sun Jan 14, 2018 5:06 pm

Arseny wrote:Mehano Blue Tiger ?

Mehano-220141_58855-30.jpg
Mehano-240889_58853-30.jpg
Mehano-240890_58854-30.jpg


Yes, quite impressive.
I agree that it is a little too long, but I will consider it
Thanks!

Arnold Accumulator shunting locomotive...well...not bad :grin:
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Re: Most impressive locomotives in TT scale

Postby Richard-B » Sun Jan 14, 2018 10:54 pm

Bernd wrote:That picture shows talent I wish I had.
Exactly...
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Somewhere between Shenzhen and Budapest...
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Re: Most impressive locomotives in TT scale

Postby modorney » Mon Jan 15, 2018 11:25 am

There's a lot of hoopla running around the NMRA concerning the Motive Power AP Certificate. The sticking point is the one scratch built loco needed, specifically, the need to scratch build a frame. There are three popular approaches (that don't involve a proper machine shop) - 3D print, glued up wood or plastic (or brass), "hogged" out aluminum or brass.

The first involves either 3D printing either in metal, or in plastic, and using the piece as a pattern for a metal casting.

The second involves gluing up a wood or plastic frame, with bearing and attachments made out of small pieces of metal. Alternatively, square brass stock - either solid or tubing - can be soldered up to scratch build a frame. Then, holes and threads can be accurately machined in place.

The third involves a piece of raw aluminum or brass, that is hogged out on a table saw, to a U shape, then fine finished with a homemade mill bit in a drill press. Many wood tools will cut brass and aluminum, it just takes longer and cuts are finer. It helps to clamp the part in a plywood frame, to make handling easier.

With all three techniques, you can then use a commercial frame as a template - making hole alignment easier.

These methods may be something worth discussing here. I personally like the solid brass method, since it is the heaviest. Adding weight to a TT model can be a challenge.
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Re: Most impressive locomotives in TT scale

Postby Bernd » Mon Jan 15, 2018 5:27 pm

I'll add another method and that is brass etchings. Take a look at how the Britt's assemble engines. It may not be scratch built but it will give you an idea of how a frame could be built for TT scale. Not all the detail that is put on an O scale engine needs to be put on the TT scale. This shows how a frame could be built using a fret saw to saw out the frame.

http://www.clag.org.uk/pannier-csb.html

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Re: Most impressive locomotives in TT scale

Postby Bernd » Mon Jan 15, 2018 8:32 pm

Here's the frame of a 2-8-0.

474

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