My TT world

My TT world

Postby ConducTTor » Sat Jan 17, 2015 12:25 am

I have stuff scattered all over the site now and can't find half of it. So I'm starting a new topic that I'll put almost everything in. I hope it's interesting/entertaining.

Had some visitors over the holidays. My uncle from Bulgaria who introduced me to trains when I was little and a friend from France who's into N scale. We're talking and watching trains on my portable layout.
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Re: My TT world

Postby ConducTTor » Sat Jan 17, 2015 12:29 am

Hard at work on U Boat and chassis for the GP 38-2.
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Re: My TT world

Postby Rich B » Sat Jan 17, 2015 6:06 am

Where you're pointing at the 171, is that discussing the moulded on handrails? :wink:
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Re: My TT world

Postby ConducTTor » Sat Jan 17, 2015 11:44 am

Rich B wrote:Where you're pointing at the 171, is that discussing the moulded on handrails? :wink:


Haha! I have no idea. Good eyes :thumbup:
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Re: My TT world

Postby Rob M » Sat Jan 17, 2015 4:46 pm

ConducTTor wrote:Hard at work on U Boat and chassis for the GP 38-2.


:thumbup:
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Re: My TT world

Postby ConducTTor » Thu Feb 12, 2015 10:09 pm

Got a couple of Piko's BR130/131s and as is normal for their locos they are too light and the motor and flywheels seem like they're taken off of their N scale models :evil: running characteristics can be a lot better.

Didn't mess with the motor or flywheels but added some weight. Inside the shell I used pieces of metal stock that I bought from Home Depot. Cut out a little useless plastic to make a bit more space.

The bottom speaker area was filled with weight also. Its removable in case I ever decide to put a speaker in there.

They're still not as smooth as Roco's Ludmillas but electrical pickup and traction is a bit better.
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Re: My TT world

Postby MacG » Fri Feb 13, 2015 3:27 pm

The motor looks like one for TT-models, similar to Tillig V100. At the flywheel is the diameter important not the length. I would say, all alright. The original weight is more as a double of the weight in TT-scale. So is the model in the middle field with others. Now you have the triple. :thumbup:
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Re: My TT world

Postby ConducTTor » Fri Feb 13, 2015 3:49 pm

Well, it's the diameter AND length :)
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Re: My TT world

Postby gerhard_k » Fri Feb 13, 2015 5:08 pm

MacG wrote:At the flywheel is the diameter important not the length.

ConducTTor wrote:Well, it's the diameter AND length :)

MacG is right - the moment of inertia increases as the fourth power of the diameter! So doubling the length of a flywheel would double its moment of inertia, but doubling its diameter would increase its moment of inertia by 2x2x2x2 = 16!
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Re: My TT world

Postby j p » Fri Feb 13, 2015 5:11 pm

ConducTTor wrote:Well, it's the diameter AND length :)


Yes.
Although much more diameter than length.

Moment of inertia
I=½MR2
where M is mass and R is radius

Length adds only mass, but diameter adds mass AND radius square.

Edit: Gerhard was faster :clap:
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