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Author Topic: Resin hoppers
BruceB

Posts: 43
Post Resin hoppers
on: May 14, 2017,
Quote

I am seeking some advice. I am in the
Midst of kit bashing some USRA triple hoppers.
Would it be more feasible to cast the bodies in resin? I have 5 assembled, with another 5-6 to go.
Martin? Anyone else with casting experience?
Bruce

Martin
Administrator
Posts: 1335
Post Re: Resin hoppers
on: May 14, 2017,
Quote

Feasible? Yes.

Been done, in fact - Henry T Productions - several hopper and gon kits in resin...and a caboose, I think.

Those were flat castings - sides and ends; think the hopper assemble was a single casting albeit a tad crude.

Still have to assembled and dress with all the details - detail parts might be real cost of such a project.

One piece castings - could be done, but that's beyond my experience and pain threshold for a hopper car.

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Ed Bommer

Posts: 269
Post Re: Resin hoppers
on: May 15, 2017,
Quote

While not an open top hopper, here is a Henry T kit of an Enterprise three bay covered hopper I built in
1988. Floquil paint, Champ decals and some weathering was done on it. The model has full underbody details for the brake system and discharge hoppers.

When building it, the castings required a good deal of fitting up. I used a bench sander set up out doors because of all the dust created while sanding he cast resin parts to square them up. It turned out to be a reasonably accurate model of a seldom modeled prototype. The only error was in the too steep a slope of the roof panels.

Image

The fragile resin end and corner posts were replaced with brass strip and angles. The three piece brake parts are from All Nation and it rides on Athearn trucks.

Stored in a box somewhere, I have Henry T kits for a two bay composite hopper, PRR quad hopper and a short, C&O three bay offset side hopper. I asked Henry about that last kit, as it had the exact length for a two bay hopper. He said it was made as a three bay to offer something different from the then new Weaver plastic hopper kits. Also, that it was indeed an accurate model. It was just three years ago that I found a photo of a C&O 3 bay offset side hopper with the same length as a two bay car.

Ed Bommer

Martin
Administrator
Posts: 1335
Post Re: Resin hoppers
on: May 15, 2017,
Quote

Nice looking car, Ed!

I've built that one as well and it was an interesting challenge to get everything to fit - lots of sanding, filing, grinding, etc. combined with colorful language and strong drink.

Basic body was ok, but just as you state - ends and corners, ladders and details from somewhere else.

I've built 2-3 of the 2 bay hoppers and the sides were very nice in detail. I have 2 of the gondolas kits in the kit to build queue.

I'll get to them after I've knocked down the restoration/rebuild pile in the queue to manageable levels - out of pile under desk #3 in my office!

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BruceB

Posts: 43
Post Re: Resin hoppers
on: May 15, 2017,
Quote

Ed I did notice that the C&O did have "short" 3 bay, offset hoppers in the era I'm interested in. Any chance you have a picture to share of the kit? I' have to keep my eyes open for one.

Martin, you confirmed what

BruceB

Posts: 43
Post Re: Resin hoppers
on: May 15, 2017,
Quote

I was dreading. That casting the body maybe more of a pain than splicing. Thanks

Martin
Administrator
Posts: 1335
Post Re: Resin hoppers
on: May 15, 2017,
Quote

Quote from BruceB on May 15, 2017,
I was dreading. That casting the body maybe more of a pain than splicing. Thanks

I think that depends on numbers.

If you're going to splice 30 cars, I'd find a way to do resin. Could be simplified particularly if you don't are about the interior - fill with a load.....

If you're doing 3 cars, I've got the band saw warmed up and ready, 😉

In between is no man's land.......

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BruceB

Posts: 43
Post Re: Resin hoppers
on: May 15, 2017,
Quote

Max 5 more, but I may reduce that number to two. I need to rethink the solvent I am using. Testors does not seem to work ( for long). Oh yes there will be loads. Getting the exterior acceptable is enough of an ordeal. Just need to score 3 more kits to get the remai ing 2 goal.

Martin
Administrator
Posts: 1335
Post Re: Resin hoppers
on: May 15, 2017,
Quote

Quote from BruceB on May 15, 2017,
Max 5 more, but I may reduce that number to two. I need to rethink the solvent I am using. Testors does not seem to work ( for long). Oh yes there will be loads. Getting the exterior acceptable is enough of an ordeal. Just need to score 3 more kits to get the remai ing 2 goal.

I may be able to help you on the solvent issue - just styrene, right?

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Ed Bommer

Posts: 269
Post Re: Resin hoppers
on: May 15, 2017,
Quote

It took a bit of digging, but I found the photo of the short 3 bay offset side C&O hopper. Its a 50 ton capacity car. Note the vertical brake rod and June 1958 reweigh date. The Henry T kit is a very close match to this car.
Ed Bommer

Image

BruceB

Posts: 43
Post Re: Resin hoppers
on: May 15, 2017,
Quote

Martin, yes styrene, but has some paint on it. Suggestions?

Ed, yep that's the one. I like it! Thanks

Martin
Administrator
Posts: 1335
Post Re: Resin hoppers
on: May 15, 2017,
Quote

Someday our paths will cross...soon I hope so I can give you two solvent "glues".

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BruceB

Posts: 43
Post Re: Resin hoppers
on: May 16, 2017,
Quote

Wow thanks Martin. I am planning on the Cleveland show this fall.
Ed, Mainline Modeler has an article on these hoppers. I'll track it down if you want.

Martin
Administrator
Posts: 1335
Post Re: Resin hoppers
on: May 16, 2017,
Quote

Quote from BruceB on May 16, 2017,
Wow thanks Martin. I am planning on the Cleveland show this fall.

How about the Nat'l next month?

Strasburg in August?

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Charlie

Posts: 180
Post Re: Resin hoppers
on: May 16, 2017,
Quote

Coming in a little late here, but ---

The casting resins available now are vastly superior to the stuff used in the 1980s for casting car kits and building kits. Flat castings for freight car parts can easily be cast now that do not require the heavy sanding (or the fumes) to true them up for fit. Multiple identical cars has been enough for me to consider resin castings providing: 1) the patterns would be within my skill range, 2) the time, expense, and availability to cut up and fit together several kits was unsatisfactory.

Charlie

BruceB

Posts: 43
Post Re: Resin hoppers
on: May 16, 2017,
Quote

Martin, no to the National, and probably not Strasburg either. Old house, refinishing floors, updating electric, HVAC work and normal upkeep. My year to focus on remediating delayed relairs. Dollars are short and time is at a premium.

Martin
Administrator
Posts: 1335
Post Re: Resin hoppers
on: May 18, 2017,
Quote

Unfortunate, but understood. Doing a bit of reno at my place in PA and that is crimping my budget, too.

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