TT scale US wagons

What type of coupler?

Tillig style
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Re: TT scale US wagons

Postby areibel » Wed Apr 14, 2010 4:07 pm

I just reread your original post, if you decide on a flat I have some prototype info on several I can send or scan. Let me do a little digging!
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Re: TT scale US wagons

Postby ConducTTor » Wed Apr 14, 2010 4:10 pm

Dig man dig! :mrgreen:
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Re: TT scale US wagons

Postby ctxmf74 » Wed Apr 14, 2010 4:55 pm

ConducTTor wrote:
I've decided to put together a wagon in CAD and send off the files for a quote. The classic method of getting dies made is too expensive so I'm going to see what fast prototyping can do for us.
I need to pick one specific prototype to work with so I need your opinions. Any pictures and more importantly diagrams with dimensions are highly appreciated.


Who will do the actual production? If you are looking for a custom builder you might ask Smokey Mountain Model Works ( Jm King) how much a run of cars would cost. They make resin kits in O, S, and HO scales and already have computer files for lots of cars so all they would need to do is re-size them? ...dave
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Re: TT scale US wagons

Postby ConducTTor » Wed Apr 14, 2010 5:12 pm

ctxmf74 wrote:
ConducTTor wrote:
I've decided to put together a wagon in CAD and send off the files for a quote. The classic method of getting dies made is too expensive so I'm going to see what fast prototyping can do for us.
I need to pick one specific prototype to work with so I need your opinions. Any pictures and more importantly diagrams with dimensions are highly appreciated.


Who will do the actual production? If you are looking for a custom builder you might ask Smokey Mountain Model Works ( Jm King) how much a run of cars would cost. They make resin kits in O, S, and HO scales and already have computer files for lots of cars so all they would need to do is re-size them? ...dave


Well dang. That's an option I guess. I was thinking of trying out these guys http://www.finelineprototyping.com/ or these guys http://www.shapeways.com/ to see what kind of prices and quality is available.

I don't have the funds to order a production run of ???? The above companies will do one offs so if prices and quality are decent, I can have as many made as is needed and not pay for a 1000 more pieces that I have to somehow unload. And obviously if this experiment ends up being productive, you guys can ask me for whatever number of wagons you may want and I'll have them made.

I imagine that if it made financial sense, Smokey Mountain would have already done a run - given that all they have to do is re-size and call it a day....

But I may be wrong. Dunno. I'm just experimenting.

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Re: TT scale US wagons

Postby Marquette » Wed Apr 14, 2010 7:25 pm

Re: Shapeways, I know someone who's used them for a one-off passenger car. The result was quite nice, and it was about $100 IIRC. So perhaps something to consider, esp. for items you only need one or two of.
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Re: TT scale US wagons

Postby ctxmf74 » Wed Apr 14, 2010 10:14 pm

Marquette wrote:Re: Shapeways, I know someone who's used them for a one-off passenger car. The result was quite nice, and it was about $100 IIRC. So perhaps something to consider, esp. for items you only need one or two of.


Sounds like it might be a good way to get a master then resin cast your own cars? Is there a 3D cad program easy enough for a caveman to do it? ...dave
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Re: TT scale US wagons

Postby Marquette » Wed Apr 14, 2010 11:06 pm

That's not a bad idea... instamaster!

Well, not so instant... as the 3D drawing has to be completely watertight, which caused some difficulties for my acquaintance (who mentioned getting this part right was a bit difficult with Google Sketchup).
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Re: TT scale US wagons

Postby ConducTTor » Thu Apr 15, 2010 1:21 pm

Marquette wrote:(who mentioned getting this part right was a bit difficult with Google Sketchup).


Hmmm, that is exactly what I'm playing around with. I've been using strictly free apps due to the cost of professional packages. I need to dig through old boxes though - there may just be a copy of a pro app somewhere.
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Re: TT scale US wagons

Postby ConducTTor » Tue Jul 06, 2010 10:57 pm

I decided to go with the 52' gondola. The Barber S2C trucks have already been modeled in 3D files and are watertight, correct and ready to go. I have the body halfway done. As soon as I get everything working on the site, I'll get back to finishing it. Production costs appear doable - I'll do three full wagons (trucks and body) in different plastic to see what works best. Wheel sets are the GC 36" variety. Not sure yet about coupler options. If I'm happy with the results, well..............

I'll post a few CAD images after I sort out the attachment problems.
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Re: TT scale US wagons

Postby AstroGoat760 » Tue Jul 06, 2010 11:39 pm

ConducTTor wrote:I decided to go with the 52' gondola. The Barber S2C trucks have already been modeled in 3D files and are watertight, correct and ready to go. I have the body halfway done. As soon as I get everything working on the site, I'll get back to finishing it. Production costs appear doable - I'll do three full wagons (trucks and body) in different plastic to see what works best. Wheel sets are the GC 36" variety. Not sure yet about coupler options. If I'm happy with the results, well..............

I'll post a few CAD images after I sort out the attachment problems.
Image


That car looks like it could be made easily with styrene parts and glue, assuming that rivet detail is not so important. If it is, then sheet brass could be used for rivet detail.

Is there any way that I could get my grubby mitts on a set of blueprints for a car like that, so I can give building one out of styrene a shot? Once built, it would be possible to make resin molds of it, which would make copies cheaper than by having a "professional" company making the copies for us.
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