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Chris333
Joined: 25 Sep 2008 Posts: 74
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trainspotter-usa
Joined: 04 Sep 2008 Posts: 315 Location: Minnesota
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Posted: Thu Oct 16, 2008 9:08 pm Post subject: |
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I don't posess any drawings nor do I know anyone who has.
But I think you might find a few takers on the list for a model RDC of any sort.
Ian _________________ I CAN see how cool this stuff is!!!
http://more-t-please.blogspot.com/ |
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DanMacK
Joined: 04 Sep 2008 Posts: 127 Location: London, Ontario, Canada
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Posted: Fri Oct 17, 2008 12:14 am Post subject: |
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I don't have scale drawings, but I do have dimensioned drawings. I found some excellent diagrams at http://www.cpsig.ca you have to register (it's free), but you get access to their documents library. there's a "Passenger Folio" folder which has RDC 1,2,3 drawings. There's a drawing for the shorter RDC4 at http://www.northeast.railfan.net/images/buddRDC4.jpg _________________ Regards,
Dan MacKellar |
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Chris333
Joined: 25 Sep 2008 Posts: 74
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Posted: Fri Oct 17, 2008 12:30 am Post subject: |
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Thanks. I see the RDC4 is a bit longer than the T gauge cars and you say it is the shorter one.
In order to check I drew up a T gauge car, man they are small!! A RDC4 would be about 3/16" longer. |
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Chris333
Joined: 25 Sep 2008 Posts: 74
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DanMacK
Joined: 04 Sep 2008 Posts: 127 Location: London, Ontario, Canada
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Posted: Fri Oct 17, 2008 12:06 pm Post subject: |
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Yeah... I was thinking the same thing. I know Robret Ray just rescaled the cars to fit the Eishindo chassis, but a full scale RDC would be interesting to see. Possibly just slice the chassis after the motor and epoxy a piece of styrene or acrylic in?
After seeing what you've done in Z I have the utmost faith you can do an RDC in T And if you do, I'd be interested in carbodies, and I know I wouldn't be the only one. _________________ Regards,
Dan MacKellar |
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Chris333
Joined: 25 Sep 2008 Posts: 74
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Posted: Mon Oct 20, 2008 7:56 am Post subject: |
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Here is a doodle. Top 3 are Tgauge RDC's, at the bottom is a standard T-gauge car.
I know a car has been shortened already, has anyone gave it a stretch yet? It doesn't seem impossible, but if someone goes first that makes it easier |
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Chris333
Joined: 25 Sep 2008 Posts: 74
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Posted: Mon Oct 20, 2008 8:15 am Post subject: |
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More...
Top is a scale drawing.
2nd is shortened 6' (1 window)
3rd is shorted 12' (2 windows)
4th same as 3rd with stock truck centers.
5th is stock car outline
I like the second version because a full length car may not look right on sharp curves, but if I will cut it up anyway why no go all the way?
Any input. |
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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 Oct 20, 2008 10:38 am Post subject: |
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Chris, consider scaling things at 1:480. There is some talk of doing NA stuff at that ratio instead of 1:450. That might bring the length down closer to the Eishindo units. _________________ —David
http://www.t-gauge.net/
http://1-450.blogspot.com/ |
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DanMacK
Joined: 04 Sep 2008 Posts: 127 Location: London, Ontario, Canada
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Posted: Mon Oct 20, 2008 12:42 pm Post subject: |
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I was wondering if slicing the frame and lengthening it with styrene and/or brass strip would work. Epoxy should bond to the frames and the brass would give a rigidity to it. I'm thinking this for both RDC's and passenger coaches.
The difference bewteen 1:450 and 1:480 would be about 4mm - almost negligible IMO.
The doodles I've done are in 1:450, gives just that little bit more space for things.
Both 1:450 and 1:480 have merits, I think it's all up to the individual modeler as to how they implement it.
Long cars on the 132.5 curves may look a bit off, but 120 would definitely look that way. I'm planning to have slightly larger curves on my layout to compensate ((handlaying anyone?) _________________ Regards,
Dan MacKellar |
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Skibbe
Joined: 05 Sep 2008 Posts: 11
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Posted: Wed Oct 22, 2008 8:17 pm Post subject: |
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Yes, 1:480 should help the width issue as well, as you mentioned via email that you were slightly wide. Can you compare those end profiles I sent to the sanded down clear body dimensions? When I was looking at the Superliners, 1:480 seemed to hit the width just right. _________________ Mike Skibbe |
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Chris333
Joined: 25 Sep 2008 Posts: 74
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Posted: Thu Oct 23, 2008 12:17 am Post subject: |
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The T-gauge body was .250" wide after sanded smooth, add .005" brass to each side and get a final width of .260" wide.
I real RDC scaled to 1:450 is .2622222222" wide. I can live with a difference of .002"
So to keep things simple I will leave it at 1:450.
At 1:480 the car should be .24583" wide. The t-gauge body would need to be another .01417" narrower. That can't be done because the gearbox gets in the way. |
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DanMacK
Joined: 04 Sep 2008 Posts: 127 Location: London, Ontario, Canada
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Posted: Fri Oct 24, 2008 1:15 pm Post subject: |
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Can't wait to see your progress Chris. _________________ Regards,
Dan MacKellar |
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Chris333
Joined: 25 Sep 2008 Posts: 74
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Posted: Fri Oct 24, 2008 2:44 pm Post subject: |
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These are so small it really is a pain to get the curve up and over the roof to look right.
A test with a blast of silver.
The lines are drawn so thin (.0025") that the whole etching process has to be perfect to work. The details are a bit crude, but at this micro size its about as good as I can get. I am still waiting for my T set in the mail, but the whole idea should work. |
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trainspotter-usa
Joined: 04 Sep 2008 Posts: 315 Location: Minnesota
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Posted: Fri Oct 24, 2008 2:50 pm Post subject: |
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Looks pretty darned good to me.
You clearly have access to facilities and techniques I can only dream of...
Ian _________________ I CAN see how cool this stuff is!!!
http://more-t-please.blogspot.com/ |
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