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Post by tjmfishing on Sept 4, 2014 19:20:00 GMT -5
I had the same visible lines on the sideframes. All disappeared after painting. Three coats of primer and five coats of paint.
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Post by chrismears on Sept 4, 2014 19:28:30 GMT -5
Terrific photos. I'm really pleased with how well they printed and I appreciate the photos and feedback. I'm quite pleased with how well that bell rendered. I spent a bit of time fooling around with the drawing of the bell to get something that looked right (to me) and would print on the end.
Looking forward to seeing these in paint.
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mta224
Superintendent
Posts: 152
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Post by mta224 on Sept 12, 2014 8:44:50 GMT -5
Hey Chris-awesome work.We really needed these parts.
Quick question-any chance you'll be doing the Montreal version of the B truck like those found on CV RS11s?
Thanks,
Anthony
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Post by chrismears on Sept 14, 2014 15:41:50 GMT -5
Hey Chris-awesome work.We really needed these parts. Quick question-any chance you'll be doing the Montreal version of the B truck like those found on CV RS11s? Thanks, Anthony Thanks for the compliment, Anthony. I really appreciate it. I'm really embarrased to confess that I never realised that the CV's RS11's rode on a different truck. I took a quick surf around and found this photo on Railpictures.net:  Now that you've pointed it out I totally see what you're referring to. I hadn't thought about this option, given my ignorance, but could easily put one together. It would be designed to fit the Atlas (Kato) RS11 truck as supplied with the RS11. I'm rather partial to the CV so this project is an easy sell. I'll add this to the "to do" list. Thanks |
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mta224
Superintendent
Posts: 152
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Post by mta224 on Sept 14, 2014 16:19:45 GMT -5
Chris you're awesome.Thanks.
Anthony
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Post by Canadian Atlantic Railway on Sept 14, 2014 16:36:46 GMT -5
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Post by mandealco on Sept 14, 2014 18:15:45 GMT -5
Hi Chris Nice work on the hood ends. Any chance of these truck frames in N Scale? They are also used on other MLW's such as the RS-23. Cheers Steve |
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Post by tjmfishing on Sept 14, 2014 20:53:12 GMT -5
I've always wondered what the deal is with those different B-B trucks. CN 36 and 3700's rode on the standard AAR-B's but the 3100 and 3800's rode on the trucks that that RS-11 has.
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Post by iomalley on Sept 15, 2014 7:41:17 GMT -5
Now that you've pointed it out I totally see what you're referring to. I hadn't thought about this option, given my ignorance, but could easily put one together. It would be designed to fit the Atlas (Kato) RS11 truck as supplied with the RS11. I'm rather partial to the CV so this project is an easy sell. I'll add this to the "to do" list. Thanks Actually Chris, you should make this new sideframe fit the Athearn blomberg trucks, not the Atlas AAR-B trucks as these light weight trucks had axles spacing closer to the blombergs at 9'. Kaslo makes these sideframes in resin, if anybody wants a set I could spare one. lmk |
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Post by tjmfishing on Sept 15, 2014 16:19:26 GMT -5
Now that you've pointed it out I totally see what you're referring to. I hadn't thought about this option, given my ignorance, but could easily put one together. It would be designed to fit the Atlas (Kato) RS11 truck as supplied with the RS11. I'm rather partial to the CV so this project is an easy sell. I'll add this to the "to do" list. Thanks Actually Chris, you should make this new sideframe fit the Athearn blomberg trucks, not the Atlas AAR-B trucks as these light weight trucks had axles spacing closer to the blombergs at 9'. Kaslo makes these sideframes in resin, if anybody wants a set I could spare one. lmk I'm happy to have them made to fit the Atlas AAR-B myself. I just don't want to have to buy an RS-11 and a set of Blombergs on top of that for the sake of several scale inches. |
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Post by iomalley on Sept 15, 2014 20:17:17 GMT -5
OK Taylor, then just cut the centre leaf spring out of your Atlas trucks. Why deliberately pursue an incorrect part at a cost?
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Post by tjmfishing on Sept 15, 2014 21:20:36 GMT -5
OK Taylor, then just cut the centre leaf spring out of your Atlas trucks. Why deliberately pursue an incorrect part at a cost? I could do that and I suppose the only thing that would be missing the little "nubs" sticking down in the center. That's certainly a good suggestion. The way I look at it, some things bother me more than others I guess. For example, I can live with the Atlas GP40-2(W) cab, but not the Intermountain. While building my Kaslo HR412 and M420 I didn't bother to take a scale 6" off of the nose of the engine. I tend to draw the line between "correctness" and "compromise" when something is only 3 or 4 millimeters (1 scale foot) off or less from the prototype. Yes, I am deliberately perusing a incorrect part, but by the time I go out and buy a pair of Blomberg trucks and try to mount them to the Atlas Kato chassis it isn't worth the headaches or extra costs of the additional trucks to me. |
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Post by chrismears on Sept 15, 2014 21:48:43 GMT -5
Okay, this is interesting. Looking at the photo I had posted I had started to wonder if the lightweight MLW truck was a shorter wheelbase compared to the typical truck under an RS11. This would be in line with the trucks used under lightweight GP9's.
So, comparing wheelbases amongst prototype locomotive trucks:
1) lightweight MLW truck: 8'-10"
2) AAR truck under "typical" RS11: 9'-4"
3) "Blomberg" under a GP9: 9'-0"
I'm sure this gets muddied further with each manufacturer's interpretation of the truck in terms of manufacturing and making use of existing parts. Certainly in terms of wheelbase the GM truck does seem the way to go. It's still too long but much closer than starting with the ALCO version.
Are the truck centers on the lightweight RS11 different when compared to a regular RS11?
I wonder if it might be worthwhile to use a complete GP9 chassis under an RS11 shell? This would certainly obviate the challenge of trying to fit the GP9's trucks to the Kato RS11 chassis. Of course, the challenge in all of this is finding the RS11 shells.
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Post by mandealco on Sept 15, 2014 21:59:47 GMT -5
Hi Not sure if this will help with this discussion, but I have modified a set of Atlas/Kato 'Type B' trucks to represent the Dofasco version. This was done in N-scale, but the result would be similar. Personally I would prefer a better looking truck, as the 'Type B' looks too skinny for lack of another word. The opening where the leaf spring was is too low, and the drop equaliser is also too thin. The coil springs should be more prominent. This may just be the different proportions that make certain parts look different, and the lack of external brake cylinders, but to me, the modified 'Type B' is no substitute. 
Please excuse the models incomplete appearance, it is an old photo. Sadly, it's still in the same condition today. Cheers
Steve |
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Post by iomalley on Sept 17, 2014 9:13:07 GMT -5
Hey Chris, No, CN's lightweight GP9s (4200s) used the 8'-0" flexicoils...big difference from the MLW trucks.
No the trucks centers are the same on all RS11s and RS18s. BUT!!! Be warned, Atlas' earlier renditions of the RS11s used their RS3 frame which is a shorter distance btwn the trucks. Their RS32/36 and latest RS11 offerings have been corrected.
Taylor, has anyone tried to fit a Kato blomberg to the atlas chassis? Making the MLW sideframes to fit the kato blomberg would be a good idea, as Kaslo's already fit the Athearn.
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Post by iomalley on Sept 17, 2014 12:37:24 GMT -5
I just thought of another thing to help 'sell' the use of the Athearn trucks. If you want to built a 3100/3800 CN unit, or CV/DWP unit, you need to make a new frame anyway to make the frame underside clear to hang the small fuel tank and cross air tanks. So making the LW sideframes fit the Atlass AAR-Bs would still leave you with a hunk of metal to shave off the Atlas frame...
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dtinut
Chairman
Modeling the DT&I of the 60's & 70's
Posts: 661
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Post by dtinut on Sept 17, 2014 15:15:52 GMT -5
I've done lots of swapping of trucks, and fitting Kato trucks to the Atlas frame will be a challenge.
1) atlas frame uses the C-424/5 type truck which is a different bolster.
2) Kato trucks typically have very low bolster compared to Atlas or Athearn (Blomberg)
I am not exactly sure which type truck the Rs models use.
If they have a pin, the swapping in athearns will be simple, but if they use the C-424 type truck design, then it's gonna be some work.
The Atlas U23B used a pin type truck, and is the only unit I know of where its simple to swap the Blombergs in.
Brian
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Post by tjmfishing on Sept 17, 2014 15:32:31 GMT -5
I just thought of another thing to help 'sell' the use of the Athearn trucks. If you want to built a 3100/3800 CN unit, or CV/DWP unit, you need to make a new frame anyway to make the frame underside clear to hang the small fuel tank and cross air tanks. So making the LW sideframes fit the Atlass AAR-Bs would still leave you with a hunk of metal to shave off the Atlas frame... I'm planning on doing three 3800's as well as three 1700's, but I was planning on milling off the fuel tank weight. |
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Post by iomalley on Sept 19, 2014 7:36:37 GMT -5
The Atlas U23B used a pin type truck, and is the only unit I know of where its simple to swap the Blombergs in. Brian Then there you go. If you want to make shapeways MLW sideframes, they should be made to match the Atlas blomberg mounts. |
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Post by chrismears on Sept 24, 2014 19:22:53 GMT -5
Hey Chris, No, CN's lightweight GP9s (4200s) used the 8'-0" flexicoils...big difference from the MLW trucks. No the trucks centers are the same on all RS11s and RS18s. BUT!!! Be warned, Atlas' earlier renditions of the RS11s used their RS3 frame which is a shorter distance btwn the trucks. Their RS32/36 and latest RS11 offerings have been corrected. Taylor, has anyone tried to fit a Kato blomberg to the atlas chassis? Making the MLW sideframes to fit the kato blomberg would be a good idea, as Kaslo's already fit the Athearn. I couldn't agree more on the difference between the truck wheelbases. That extra foot is too much to accept so it really is an act of mounting a shorter wheelbase truck. I was aware of Kato using the RS3 chassis under their N scale RS11 (I think in my native N scale, sorry) but didn't realise that issue carried over into HO scale. That's a nice to know detail. |
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