Etched Pixels Posted April 1, 2013 Share Posted April 1, 2013 First cut based on photographs and a bit of reverse perspective magic. I need to have a look at the buffer and underframes next, see what should be visible down below beyond the stuff hung off the solebar. Link to post Share on other sites More sharing options...
Steadfast Posted April 1, 2013 Share Posted April 1, 2013 Interesting project Alan, it'll be good to have an alternative to the CJM model for those of us on lower budgets! Something I've noticed from your render, are the multiple angles on the roof down to the rendering of the model? The real things only have three angled panels between the narrow top flat panel and the sides. Hope this helps, definitely a project I'll be keeping an eye on! jo Link to post Share on other sites More sharing options...
Etched Pixels Posted April 2, 2013 Author Share Posted April 2, 2013 The render only has 3 angled panels as well 8) I think I may have the top a bit too wide, I need to play with that. Fortunately I went to the trouble to key all the internal and external wall profiles plus end taper off the one profile so I can tweak it and the whole thing redraws itself the right shape. Link to post Share on other sites More sharing options...
RMweb Gold roundhouse Posted April 2, 2013 RMweb Gold Share Posted April 2, 2013 Excellent to see these as not only will they be cheaper than CJM but also more readily available. Ian Link to post Share on other sites More sharing options...
Jim Martin Posted April 2, 2013 Share Posted April 2, 2013 Yes, I'd be in for one of these. Although they're not exactly on my A-list, these used to be maintained at Allerton and often turned up at Edge Hill on the Arpley (Warrington)-Allerton cripples train. I'd dearly love one of the ATM / CJM ones, but that would blow out my modelling budget for several months! Jim Link to post Share on other sites More sharing options...
Steadfast Posted April 2, 2013 Share Posted April 2, 2013 Ahhh I see, nicely done Alan. Yeah the profile seems very similar to a 66, the top panel is very narrow, the next is the widest, and the lower two are the shallowest depth The wheels on these are tiny. Are they suitable for 5.1 mm or are they smaller? jo Link to post Share on other sites More sharing options...
Etched Pixels Posted April 2, 2013 Author Share Posted April 2, 2013 Good observation - and as I understand it they were built to the limits of the loading gauge in that pattern, which would I believe make it identical to the 67 and the KSAA and a fraction wider than a 66 ? Ok that makes fixing the profile a bit simpler. Second photo is really useful too as it shows the steps and the solebar end curvature nicely - something I'd completely missed with the photos I'm working from. Lots to fix yet - and the articulation needs somewhat of a redesign, having peered at a few continental articulated vehicles I have a revised plan for that which might even work ;-) Alan Link to post Share on other sites More sharing options...
Steadfast Posted April 2, 2013 Share Posted April 2, 2013 Sounds logical to me, re the width. I'll have a look and see if the photo of the train departing gives any clues to width vs 66 jo Link to post Share on other sites More sharing options...
Vonzack Posted April 3, 2013 Share Posted April 3, 2013 Lots to fix yet - and the articulation needs somewhat of a redesign, having peered at a few continental articulated vehicles I have a revised plan for that which might even work ;-) Atlas US Articulated Tri-Level Autoracks may be a good source of inspiration. They have more of a gap in between them than the arbels, but the principle of articulation should still be sound. Link to post Share on other sites More sharing options...
Etched Pixels Posted April 3, 2013 Author Share Posted April 3, 2013 Link to post Share on other sites More sharing options...
RMweb Premium steam-driven boy Posted April 4, 2013 RMweb Premium Share Posted April 4, 2013 Hi, I've been keen on these, particularly after beast 66606 posted a topic with memorable Class 67 hauled test train - photo and video - emerging from the heavy fog, further down the page several Class 66 hauled photo's Link to post Share on other sites More sharing options...
bmthtrains - David Posted April 4, 2013 Share Posted April 4, 2013 I will definitely have a set of these - interested to see how you tackle that articulation though! David Link to post Share on other sites More sharing options...
Etched Pixels Posted April 4, 2013 Author Share Posted April 4, 2013 Link to post Share on other sites More sharing options...
Etched Pixels Posted April 4, 2013 Author Share Posted April 4, 2013 Next issue is the bogies - now the first question is wheel diameter which seems to be small, but the second is given this whether there are any good reliable sources of sanely priced 5.1mm or maybe a bit smaller (still to verify) wheels on shorter than 15mm axles. Do any of the US manufacturers use small wheels on sane axle lengths - say about 13mm pinpoints. That would make doing 3d printed bogies a bit more practical. Alan Link to post Share on other sites More sharing options...
Fat Controller Posted April 4, 2013 Share Posted April 4, 2013 Next issue is the bogies - now the first question is wheel diameter which seems to be small, but the second is given this whether there are any good reliable sources of sanely priced 5.1mm or maybe a bit smaller (still to verify) wheels on shorter than 15mm axles. Do any of the US manufacturers use small wheels on sane axle lengths - say about 13mm pinpoints. That would make doing 3d printed bogies a bit more practical. Alan Alan Wheel diameter 680mm; minimum 651mm after reprofiling. The bogies are Y39; you might get more gen on these via a Google. I've sent you a PM, BTW. Link to post Share on other sites More sharing options...
RMweb Gold Revolution Mike Posted April 4, 2013 RMweb Gold Share Posted April 4, 2013 ATM do 5.1mm wheels, so I guess that is what their Arbels ran on. Not sure what axle length they are. Cheers, Mike Link to post Share on other sites More sharing options...
Etched Pixels Posted April 4, 2013 Author Share Posted April 4, 2013 ATM seems to be 15mm like most other UK stuff - too long to do decent 3D printed bogies, and it seems from the diameters also a bit oversized. Link to post Share on other sites More sharing options...
Etched Pixels Posted April 4, 2013 Author Share Posted April 4, 2013 Ok that looks promising: US 28" wheels with 13.7mm axle lengths seem to be available. 28" is 711mm 711mm at 1:148 instead of 1:160 is 657mm Link to post Share on other sites More sharing options...
RMweb Premium Nile Posted April 4, 2013 RMweb Premium Share Posted April 4, 2013 Fox Valley Models wheels come on a variety of axle lengths. Link to post Share on other sites More sharing options...
Etched Pixels Posted April 8, 2013 Author Share Posted April 8, 2013 Ok roof adjusted to match the actual gauge data. Wasn't far out at all but not quite right. Now a bit thinner at the top and with the other positions tweaked to be correct. Link to post Share on other sites More sharing options...
Vonzack Posted April 9, 2013 Share Posted April 9, 2013 Etched, what material do you have in mind for these to be printed in? If FUD, you may need to add some formers inside the model so that it keeps its shape during the curing process. I've recently printed something of a similar size and shape to one of your Arbel segments and found that the roof drooped and the sides bowed inwards. For info I was using 0.5mm walls. Link to post Share on other sites More sharing options...
Etched Pixels Posted April 9, 2013 Author Share Posted April 9, 2013 Polished WSF then use small etched bits to add overlays. Would be more than a little pricy in FUD ! Alan Link to post Share on other sites More sharing options...
Steadfast Posted April 9, 2013 Share Posted April 9, 2013 That latest render looks great Alan, nice stuff. Polished WSF sounds like a good route given the lack of raised details, and with etches too sounds like a perfect pairing. Looks like I'll have to dig out my pics of a set in a wagonload working to get modelling! jo Link to post Share on other sites More sharing options...
RMweb Gold Revolution Ben Posted April 10, 2013 RMweb Gold Share Posted April 10, 2013 Hello Alan We used the 5.1mm wheelsets on the ATM Arbel models, which were produced as a limited run of 100 sets ten years ago. There are some smaller wheelsets available from US suppliers I believe. I have quite a few detail photos from when we researched these wagons, I will see what I can dig out to assist you with, though it may take a couple of weeks. cheers Ben A. Link to post Share on other sites More sharing options...
Etched Pixels Posted April 13, 2013 Author Share Posted April 13, 2013 Thanks - that would be great. I'm planning to use the US 28" (ie 4.4mm or so) wheels eventually but I've ordered a set of bodyshells so I can hack on them and investigate bogie options once I've got something to play with and a better feel for all the ride heights and clearances needed. Alan Link to post Share on other sites More sharing options...
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