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rmyers
Joined: 19 Nov 2008
Posts: 73
Location: Evanston, IL USA
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 Posted: Sun Jan 11, 2009 4:12 pm Post subject: |
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I did some calculations based on the video and some assumptions that I think are reasonable.
The assumptions:
The turnout and reversing curve are the length of a standard straight 60mm.
The offset matches current track radius centers of 12.5mm.
This is a continuous curve, curved frog turnout, like Kato or Peco.
This gives a turnout radius of around 290mm, and a diverging angle of 12°.
This leads to a couple of interesting conclusions - the instantaneous frog is about #6.9, compare Kato short of 5.2 and Kato long 6.3 (my calculations), pretty long - it should run and look good. Also this 12° angle will require it's own fitter pieces to fit into a layout. A turnout like this would eliminate the need for a single crossover, as one could be constructed from the standard turnouts.
Let the layout planning begin!
Bob |
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JohnDMJ
Joined: 21 Sep 2008
Posts: 34
Location: Hampshire - UK
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| Posted: Sun Jan 11, 2009 4:17 pm Post subject: |
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| rmyers wrote: | | The video isn't close enough to really get a sense of the frog length, but it doesn't seem very short, and the parallel track spacing is reasonable. It actually looks similar in geometry to Kato's N Unitrack long turnout. |
Since the source of that video clip is the UK distributor of T Gauge, I'm guessing that this is what Eishindo wants the world to see! |
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B 67
Joined: 23 Sep 2008
Posts: 277
Location: Stratford, Australia
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| Posted: Sun Jan 11, 2009 10:53 pm Post subject: |
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Whoops! 
Two threads on turnouts. I was earlier referring to this photo from the first post in this turnout thread.
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Darren,
Stratford,
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David K Smith
Chief Cook and Bottle Washer
Joined: 03 Sep 2008
Posts: 435
Location: New Jersey, USA
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| Posted: Sun Jan 11, 2009 11:22 pm Post subject: |
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That's such an interesting shot. It looks to me as if a mechanical engineer milled a turnout out of a solid block of some kind of plastic, embedded rails into it, and likely fitted it with a geared motor drive to move the points. Can you say "overkill"? I mean, come on... not to keep tooting my horn, but I did the same thing with no special tools, and it even looks something like a real turnout.
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—David
http://www.t-gauge.net/
http://1-450.blogspot.com/ |
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JohnDMJ
Joined: 21 Sep 2008
Posts: 34
Location: Hampshire - UK
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| Posted: Sun Jan 11, 2009 11:54 pm Post subject: |
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But it does seem that the points (switches / turnouts) featured in the Guagemasetr video are the same as you show in this photograph.
But two threads on points (switches / turnouts), i guess it had to branch out some time!!
With apologies |
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rmyers
Joined: 19 Nov 2008
Posts: 73
Location: Evanston, IL USA
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| Posted: Mon Jan 12, 2009 12:18 am Post subject: |
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| JohnDMJ wrote: |
But it does seem that the points (switches / turnouts) featured in the Guagemasetr video are the same as you show in this photograph.
But two threads on points (switches / turnouts), i guess it had to branch out some time!!
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I'll take the blame. I started this thread from the modeling perspective - the other was from the product perspective.
But now I'm totally confused. The detail on the still is much better than the Flash video, and like David says, this seems to be an engineering proof of concept. It's also dated last June!. I assume that the test shot photo of the 30° modular turnout is newer and closer to what the production item may be.
Bob |
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Sam K
Joined: 11 Nov 2008
Posts: 14
Location: Manchester, UK
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| Posted: Mon Jan 12, 2009 12:38 am Post subject: Turnouts |
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Hmmm, it would be nice to see a clearer picture of those.
With that sharp angular deviation from the straight through line, and after looking closely at the vid on the Gaugemaster site I think that these may be single bladed points!  
If you zoom in on the vid you can just about make out the blades apearing to move all the way across the track at their pointed end but pivot at the frog end!
I wonder if I'm seeing that right   |
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David K Smith
Chief Cook and Bottle Washer
Joined: 03 Sep 2008
Posts: 435
Location: New Jersey, USA
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| Posted: Mon Jan 12, 2009 2:11 am Post subject: Re: Turnouts |
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| Sam K wrote: | Hmmm, it would be nice to see a clearer picture of those.
With that sharp angular deviation from the straight through line, and after looking closely at the vid on the Gaugemaster site I think that these may be single bladed points! :shock: 8)
If you zoom in on the vid you can just about make out the blades apearing to move all the way across the track at their pointed end but pivot at the frog end!
I wonder if I'm seeing that right :wink: :?: |
Funny you should mention that... I was thinking the same thing as I was staring at the still photo...
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—David
http://www.t-gauge.net/
http://1-450.blogspot.com/ |
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charliemeinershagen
Joined: 14 Nov 2008
Posts: 12
Location: Redding, California
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| Posted: Mon Jan 12, 2009 3:55 pm Post subject: Turnouts from Eishindo, Ltd. |
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T-gaugers,
I showed my T-gauge layout this past weekend in the GTE show in Sacramento, Calif. I talked with a gentleman who was at a hobby shop in Osaka, Japan recently. He reported to me that T-gauge turnouts are now available form Eishindo. Too bad he didn't pick up a few.
Check out my double-track T-gauge layout on YouTube. More videos to follow. The layout generated quite alot of interest, especially amoung the 5 year olds. We perhaps will have to wait until they grow up. If we live that long.
Charlie |
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David K Smith
Chief Cook and Bottle Washer
Joined: 03 Sep 2008
Posts: 435
Location: New Jersey, USA
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| Posted: Mon Jan 12, 2009 3:58 pm Post subject: Re: Turnouts from Eishindo, Ltd. |
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| charliemeinershagen wrote: | | TI talked with a gentleman who was at a hobby shop in Osaka, Japan recently. He reported to me that T-gauge turnouts are now available form Eishindo. |
Great news--thanks for the tip!
| charliemeinershagen wrote: | | Too bad he didn't pick up a few. |
Too bad Eishindo doesn't keep their website up to date.
| charliemeinershagen wrote: | | Check out my double-track T-gauge layout on YouTube. |
This one?
http://www.youtube.com/watch?v=rRikzCIgzdQ
_________________
—David
http://www.t-gauge.net/
http://1-450.blogspot.com/ |
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Jax
Joined: 04 Dec 2008
Posts: 44
Location: London, UK
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| Posted: Mon Jan 12, 2009 7:09 pm Post subject: |
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| So how would one go about getting some then? |
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JohnDMJ
Joined: 21 Sep 2008
Posts: 34
Location: Hampshire - UK
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| Posted: Mon Jan 12, 2009 7:15 pm Post subject: |
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As an aside, it's interesting to note that most recent videos of T Gauge, including Eishindo's own, only seem to show a single power car running rather than the full 4-car set!
J |
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rmyers
Joined: 19 Nov 2008
Posts: 73
Location: Evanston, IL USA
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David K Smith
Chief Cook and Bottle Washer
Joined: 03 Sep 2008
Posts: 435
Location: New Jersey, USA
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David K Smith
Chief Cook and Bottle Washer
Joined: 03 Sep 2008
Posts: 435
Location: New Jersey, USA
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| Posted: Mon Jan 12, 2009 8:34 pm Post subject: |
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| TBA wrote: | | I wonder how Arthur Sherwood would have designed turnouts. His 1:480 scale locos ran with fine wheel standards (compared to T) though his track reportedly ran only in a circle without any thought to switches. |
The reason his track ran in a circle was to simplify tracklaying and ensure accuracy. Slots were milled into a solid rotating disk, and nickel-silver rings were glued into them. Also, his flanges were the same size as Eishindo's (.010 in).
http://www.zen98812.zen.co.uk/480scale.html
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—David
http://www.t-gauge.net/
http://1-450.blogspot.com/ |
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