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Burkitt
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This project is on my virtual workbench rather my real one.
I've been commissioned through the forums of Shapeways, the 3D printing company, to do the CAD design for a General Electric E33 in N scale. 12 of these 11,000V AC locos were delivered to the Virginian Railway in 1955, then sold by its successor the Norfolk and Western in 1962 to the New Haven, where they remained through Penn Central and Conrail control until withdrawn in 1981.



Photo by Frank Hicks, published under Creative Commons Attributions Share Alike License.

Preserved E33 at the Virginia Museum of Transportation. Painted in original Virginian livery, but with several modifications made in the Conrail era.


The bodyshell CAD is now largely finished, bar some front end and roof details for which I am awaiting some extra photos.














The model is designed to fit on an Atlas C628 chassis, which is within about a millimetre of the dimensions of the E33.

Paul

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Wow Paul, nice work!

Roughly speaking how many hours do you have in this so far?

Wayne

Burkitt
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Thanks Wayne. So far it's been about a week of evenings working on this model.

Paul

Last edited on Sat Jan 7th, 2012 04:36 pm by

Burkitt
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Here are the final renders of the N scale E33 from Blender. I had to increase the diameter of the handrails to 0.6mm in order to make it printable - at 0.3mm they would have disintegrated.











Paul

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Still amazed  . . .  :shock:

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Likewise exclam: :thumbs

Wayne Williams
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The hand rails do look a bit large, but on the other hand they look good and strong. I don't think I would have really noticed it if you hadn't told us, so no harm done. As if you had a choice, right?

Very Impressive!

Wayne

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It does look great Paul.  Does it have to be printed with the handrails ?  Maybe they could do it without and you retro-fit them in brass ...........as Wayne said, they do look a bit hefty. :roll:  Otherwise, fantastic detail.  It will be interesting to see how well the print comes out.

Burkitt
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Thanks all for your compliments.

Petermac, the person who commissioned the model requested that all the handrails be included as 3D printed parts, but it would certainly be possible to do a version without them so brass ones can be added instead.

Paul

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The E33 has been submitted to Shapeways by the guy I'm designing these for, and should hopefully be delivered in the next few days.

Meanwhile, I've completed a second loco for him, the E33's successor the E44.
















This class had an amazing number of detail variations, especially among the lower numbered locos. The model depicts number 4400 in upgraded condition, and is probably not correct for any other members of the class.

Paul

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Very impressive Paul:thumbs- how many photos of the original did you have to work with ?


Burkitt
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Thanks Dave. For the class as a whole I've got about 200 photos on my laptop, plus three sets of drawings. For 4400 specifically I used three or four photos that show its particular combination of details. There a plenty more photos on the net as well, rrpicturearchives.net has photos of pretty much every class member.

Paul

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The first print of the E33 was delivered from Shapeways yesterday.




At the back is the Atlas C628 chassis being used to power the loco, and in front of the body is the sprue with all the handrails and other details.


I've now moved on to the third model of the four I've been commissioned to do, the General Electric E40.





Paul

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Paul,
DO you know of any specific timeframe for when these model shells might be available for purchase? I've been trying to get some for about 15 years now. They're a pretty critical form of motive power for my PRR NEC modular project.

Yes, I will be running them under working catenary. As a longtime EPTC member, it would be wrong of me NOT to.:cool:

Thanks!
--Drew McCann

Burkitt
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Hi Drew,

Thanks for your interest in the models. I plan to make them available on Shapeways following a reasonable period after the delivery of the printed models to the person who commissioned the designs. I have one more loco to design after the E40, so hopefully they will all be available within a couple of months at the most.

Paul

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Ahh, excellent. Has a price point been decided on yet? I can see needing 4-5 of the E33's, 12 of the E44's, and one E40. (Still wondering what the magic #4 will be. An AEM7, hopefully? Although a P5a would be nice, too.)

Time to start stockpiling C628 mechanisms.

--Drew

Last edited on Tue Feb 7th, 2012 05:37 pm by

Robert
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Hi Drew, any chance of you expanding on your modelling in a topic of your own?

Burkitt
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Drew, the price will be somewhere in the $60 region. If you plan on ordering multiple models, let me know once they're available and I can combine the ones you want into a single Shapeways file to cut the cost down quite a bit.

The E40 is designed to use a Minitrix U28C chassis, though I'm considering doing a version for the Kato PA chassis too. The final model will be a GF6C, using a Kato SD40 chassis.

Here is the finished E40 design, which includes truck sides as the U28C design looks very different from the E40, and of course doesn't have third rail shoes.





I've also done a version representing the locos' original condition with underframe fairings. By request of the person who commissioned the designs, I've added very fine indented lines to guide masking of the complex New Haven livery.



Another thing I've been working on is the instructions for the E44, in the form of an exploded view to show where all the separate parts go.







Paul

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Loving that E44! I'm definitely in for a couple. What are you planning to use for pantographs?

Hiroe
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Sommerfeldt does offer both Box and Faively style working pantographs in N.

Burkitt
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For the E33 and E40 there's also the Kato GG1 pantograph.

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I've been sent a photo of a the E33 body now fitted to the C628 chassis and awaiting painting (posted with permission).



As expected the chassis block needed some trimming to fit in the body, and the bogie frames needed a small amount of material cut off their outer corners to ensure free rotation, but otherwise everything apparently went together very nicely.

Meanwhile I've been working on the CAD for loco number four, the GF6C.



I have also been commissioned to do the New Haven EF4 and EF3 electric locos, and some New Haven passenger cars too. So, the GF6C will not be the last of this batch of US prototypes.


Paul

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That E33 is looking pretty nice! Can't wait to see her in paint.

Burkitt
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Thanks Eric.

Here are some renders of the finished GF6C CAD.









One detail of these locomotives puzzles me - the thing that looks like a ship's anchor, suspended in front of one of the underframe boxes. It's clearly visible in this photo, below solebar level just to the left of the "B" in BCRail -

http://www.railpictures.net/viewphoto.php?id=51139&nseq=14

If anyone can tell me what it is I'd be very grateful.

Paul

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A little inspiration straight from Strasburg, PA!

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Paul - That "anchor" looks like a rerailing frog. If an axel derails, that device would be placed on the track ahead of the derailed axel with the rail coming through the slot that is visible in that photo. When the train moves forward, the frog guides the wheel up and back onto the track.

I scoured all over the Railroad Museum of Pennsylvania, but I couldn't find one to take pictures of.

Burkitt
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Eric, thanks for E44 photo and the explanation of the rerailing frog. That certainly makes a lot more sense than a loco having an anchor.

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I've just been sent a photo showing the prints of the E33 and E44, posted with permission.



In front are two E33s, and behind them a pair of E44s, all mounted on the Atlas C628 chassis. Right at the top can be seen the sprue with the handrails and other details awaiting fixing.

Paul

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Some early renders of the fifth loco, the New Haven EF-3.









Paul

Wayne Williams
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I'd say you are a master with that software Paul! That looks real good. Way beyond me.

Wayne

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Me too, I just sit back and admire.

Burkitt
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Thanks for your kind compliments Wayne and Robert.
The EF-3 is now finished, here are some renders of the completed design.









Paul

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A final render of the EF-3.



Paul

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Any more thoughts on when us Slobbering Pennsy Fans might be able to get our hands on the E44?

Burkitt
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Hi Eric,

The E33 will be available from the beginning of April, and the first lot of E44s from mid-April, with more variations over the following weeks.

Paul

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One month to come up with a C628 chassis. Check.

Last edited on Tue Apr 3rd, 2012 01:20 pm by eric220

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Ready!

Burkitt
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Great to see you've found a C628 Eric.

The first version of the E33, with the correct details for the New Haven period, is now available from Shapeways at http://www.shapeways.com/model/495162/ne3301-n-scale-e33-loco-new-haven.html. I'll add the earlier and later versions over the next few days.

Paul

Last edited on Fri Apr 6th, 2012 02:38 pm by

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Fantastic models and as far as I am concerned almost unbelievable for N gauge. My word how that scale and gauge has come on in the last few years.

Burkitt
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Thanks Robert. I've now made available the earlier Virginian and Norfolk and Western versions of the E33.

Virginian Railway - as-built condition

Virginian Railway and Norfolk & Western - with front high level power cables

Paul

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The first of the E44s is now available, with correct details for 4400-4405 as built . I'll be adding more versions over the coming days.

I've also been sent some photos of the models delivered so far to the chap who commissioned the designs from me.


GF6C British Columbia Railway Tumbler Ridge loco



EF-3 New Haven heavy freight loco



New Haven Osgood Bradley passenger car



The EF-3 and Osgood Bradley together


Paul

Last edited on Mon Apr 23rd, 2012 09:35 am by

eric220
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Got mine ordered. Thanks!

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Thanks for your order Eric.
Several extra versions of the E44 are now on Shapeways, with more to come.

This is the latest loco that I've been working on, the Canadian LRC. These locos were based on a similar principle to the Intercity 125, but were rather less successful, operating from 1981 to 2001.
This model actually depicts the pair of prototypes which were operated by Amtrak on the North East Corridor between 1980 and 1982.

















Finding a chassis for the model is proving to be a challenge, as the locos were about 2 - 4ft lower than most North American prototypes. I think that the Dapol Class 67 might be suitable, but am trying to confirm some details of the chassis. If anyone who has one can help out I would be very grateful. The first thing I need to know is the bogie wheelbase, distance between bogie centres, and the height from the top of the rails to the top of the chassis. I'm also trying to find out whether the underframe details are part of the cast chassis block, or whether they are a separate part that can be removed. Finally I'm wondering how much of the mechanism is in the underframe rather than the body.

Many thanks to anyone who can help,

Paul

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Look what came in the mail!



I can't wait until I have time to bust out the Dremel, take down the C628 frame, and add a decoder! Unfortunately, it's going to be a few days, so this will have to do for now.



One thing that I am a little disappointed about... The parts sprue is really badly warped. I'm not sure how much of that is due to the build orientation and natural curling, and how much of it is due to the fact that they chose a bag that was about 2mm to small to ship it... I'm hoping that with some time under a little weight, it will straighten out.

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Eric, thanks for posting those very nice photos of the E44.

I'm sorry to hear that the sprue was warped. If you send Shapeways customer service a photo of it they are normally very good at sending free replacements for warped parts, especially if you can show it is longer than the bag it was packed in.

Paul

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I've made two more locos available on Shapeways.

First the British Columbia Railway GF6C.



There are two options, with the rooftop electrical gear part of the body, or with it as a separate part on a sprue.

Also now on Shapeways is the New Haven EP-5 / Penn Central E40.



There are versions depicting it in both as-built condition, and later condition with extra grabrails and the underframe fairings removed. Additionally there is the option to have fine engraved lines to help guide the painting of the complex New Haven McGinnis livery.

The models are available from Shapeways

Paul

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Another model is now up on Shapeways, the New Haven EF-3.




There are two versions, as above for the locos as built...




...and for the five locos fitted with steam heating boilers.


As before, available from Shapeways.


Paul

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I got home this afternoon and found a box waiting for me at the front door. Inside were these little guys from Dapol.



I tried them out on the E44 shell, and here's what I came up with.





Not a perfect match to the prototype, but plenty close enough!

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OK, after a Bestine bath,



Application of details (which included several bits snapping apart, and one grab iron going flying of into the void),



And painting, I wound up with this (lost a handrail stanchion during painting):



I've still got some work to do, but I have to say that I'm grateful to the PRR for the paint scheme.

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For the ignorant - what's a "Bestine bath" when it's at home ? :roll:

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Bestine is brand name for a heptane solvent. It dissolves the wax coating that comes on Shapeways models without damaging the resin. You can see in the second photo how the RP resin has turned white instead of translucent. That's an indicator that the wax has been stripped. The model also feels different. Before the bath it feels slick.

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I decided to test fit the whole thing together.



The underbody detail is just taped there, and it's clear that the frame will have to be painted before final assembly. As you can see, this preview cost me another handrail stanchion. :twisted: What you can't see is that it also cost me both C628 frame halves. Fortunately, Atlas offers the frames as replacement parts, and I found the stanchion this time. I also found out that I'm out of CAA. Urge to kill... RISING!!!!

Although I'm very grateful for this shell, I have to say that the details and handrails are a royal pain. Just as a suggestion, I'd include a couple of extra grab irons on the sprue to account for parts flying off.

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Thanks for ther explanation about Bestine Eric - I thought the white was because you'd primed it ..............:oops:

Is there any particular reason these printed bodies have to carry all the handrails and other small details ?  I'd have thought it would be better to add that afterwards ....................:roll::roll::roll:

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Eric, thanks for posting those photos of your progress on the E44. It looks like you're making a really good job of it.

Are you using black or very dark brunswick green? Looking at photos of the E44 I've been unable to work out which colour they were.

Sorry about the C628 frame parts, and the broken handrail stanchions. I'll definitely look at adding some spares to the models.

Petermac, the handrails and other details are printed separately from the body on a sprue. This exploded view gives an idea of how it all goes together.




Paul

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Paul - It's PolyScale PRR Brunswick Green. Here's what it looks like once it gets a coat of gloss finish:



I really should have taken your advice and just sent Shapeways an email with a photo of the warped part. I decided to try and build it anyway, and the snapped stanchions were a direct result of that decision. I'm trying to work with Shapeways to get another sprue.

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Wow it's been awhile. I did get a replacement sprue from Shapeways. About a week ago, I was pointed to these:

http://www.mountvernonshops.com/E44.html

And they came in the mail today. Maybe its time to finally finish up this project.


                 

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