Forward! Posted February 17, 2011 Share Posted February 17, 2011 Crikey, what I would pay to see this layout populated by pre-group stock.... Will Link to post Share on other sites More sharing options...
Ron Heggs Posted February 18, 2011 Author Share Posted February 18, 2011 CORNBROOK VIADUCT - Bridge #2 Details of the design and construction of the bridge span cross-bracing Bridge Span – West (2 off) Bridge Span – East (2 off) (the above drawings are not to the same scale) Bridge Span – West Black – 3.75mm width – external non-trussed bracing Grey – 3.75mm width – internal trussed bracing Blue – 3.00mm width – external non-trussed bracing L.Blue – 3.00mm width – internal trussed bracing Bridge Spans – East & West Green – 2.00mm width – external non-trussed bracing L.Green – 2.00mm width – internal trussed bracing Red & Mauve – 2.00mm width – trussed bracing in sections A practical construction problem arises with the L.Green internal cross-bracings, as the trusses are interleaved in the central section this affects 14 trusses in each span. to one degree or another Construction proceeds with one set (North face) of the external members of the T beams laid out first, and the basic truss assemblies fixed in complete or part sections on top, and the remaining set (South face) of the external members of the T beams fixed on top of these trusses. The completed cross-braced truss assembly will then be fixed within the upper, lower and end span beams - to be continued shortly 2 Link to post Share on other sites More sharing options...
Arpleymodeller Posted February 18, 2011 Share Posted February 18, 2011 Elite architecture in minature B) The trainshed is the best of its kind Ive ever seen. Regards Lewis Link to post Share on other sites More sharing options...
iankemp Posted February 18, 2011 Share Posted February 18, 2011 CORNBROOK VIADUCT - Bridge #2 Details of the design and construction of the bridge span cross-bracing Bridge Span – West (2 off) Bridge Span – East (2 off) (the above drawings are not to the same scale) Bridge Span – West Black – 3.75mm width – external non-trussed bracing Grey – 3.75mm width – internal trussed bracing Blue – 3.00mm width – external non-trussed bracing L.Blue – 3.00mm width – internal trussed bracing Bridge Spans – East & West Green – 2.00mm width – external non-trussed bracing L.Green – 2.00mm width – internal trussed bracing Red & Mauve – 2.00mm width – trussed bracing in sections A practical construction problem arises with the L.Green internal cross-bracings, as the trusses are interleaved in the central section this affects 14 trusses in each span. to one degree or another Construction proceeds with one set (North face) of the external members of the T beams laid out first, and the basic truss assemblies fixed in complete or part sections on top, and the remaining set (South face) of the external members of the T beams fixed on top of these trusses. The completed cross-braced truss assembly will then be fixed within the upper, lower and end span beams - to be continued shortly How do you go about making one of the top ones? I am going to have to build something for a bridge i am making to replace a cardboard/wood one that i did when making the first bridge. I have made the base part of it by using the wills girder kit and also wills brick kits. These models you have made (making) look so real (once painted and weathered) 1 Link to post Share on other sites More sharing options...
Ron Heggs Posted February 18, 2011 Author Share Posted February 18, 2011 Here are few photographs of the Cornbrook Viaduct - Bridge #2, as it exists today These photographs have been provided by 65179 with my thanks Copyright in these pictures remains with 65179 South face of central portion of bridge with upper portion of pier/stanchion. MSJ&AR viaduct in the foreground View of North elevation of pier/stanchion from North East View of North elevation of pier/stanchion from North West Detail of stanchion. Chamfered portion is a later detail provide during refurbishment for the Metrolink Detail of pier/stanchion bracing 3 Link to post Share on other sites More sharing options...
Ron Heggs Posted February 18, 2011 Author Share Posted February 18, 2011 How do you go about making one of the top ones? I am going to have to build something for a bridge i am making to replace a cardboard/wood one that i did when making the first bridge. I have made the base part of it by using the wills girder kit and also wills brick kits. These models you have made (making) look so real (once painted and weathered) Hi, Ian My next few posts will show how the construction proceeds for these bridge structures If you would like some more detailed info. particular to your bridge structure send me some dimensions, etc. via a PM or Email Ron Link to post Share on other sites More sharing options...
RMweb Premium Steven B Posted February 19, 2011 RMweb Premium Share Posted February 19, 2011 Some excelent work on show here. One question if I may though; Why go to the effort of all the CAD work and then build the structures from plastistrut? Why not laser cut plastic/card/wood or etched brass? Happy modelling. Steven B. Link to post Share on other sites More sharing options...
Ron Heggs Posted February 19, 2011 Author Share Posted February 19, 2011 Some excelent work on show here. One question if I may though; Why go to the effort of all the CAD work and then build the structures from plastistrut? Why not laser cut plastic/card/wood or etched brass? Happy modelling. Steven B. Hi, Steven Thanks for your comments Laser cut plastic, etc. and etched brass is very expensive compared to plastic card, etc. especially where most structures are one-offs, and there are a lot of unique structures . Setting myself up with etching or laser cutting equipment would be an investment not worth having for just a one-time model. It would be different if I was setting up a business Plastic is relatively cheap, and with no time constraints, time is not important. To build a scale model of a prototype in any material you need an accurate drawing, and a way of establishing a method and order of construction CAD I have had for some 30 years, but even without it I would need to produce accurate drawings for templates, etc. Etchings I have had produced for me include 100's of window frames and turnout tie-rods, etc. None of the many similar items available are identical to the prototypes I am modelling Ron Link to post Share on other sites More sharing options...
Ron Heggs Posted February 19, 2011 Author Share Posted February 19, 2011 CORNBROOK VIADUCT - Bridge #2 Details of the design and construction of the bridge span cross-bracing - Continued Bridge Span – West Construction of one set (North face) of the external members of the T beams, which I will call lattice work is complete, comprising 8 off at each end – 10th x 3.75mm width for the external non-trussed bracing 8 off at each end – 10th x 3.75mm width for the internal trussed bracing 8 off – 10th x 3.00mm width for the external non-trussed bracing 8 off – 10th x 3.00mm width for the internal trussed bracing 12 off in the central portion – 10th x 2.00mm width for the external non-trussed bracing 10 off in the central portion – 10th x 2.00mm width for the internal trussed bracing A scale size print of the span bracing was used as a template to ensure the correct location and positioning was maintained during assembly Lattice work – Overall dimensions 820mm x 86mm 10th plasticard distorts rather easily, but this will corrected when the trusses are fixed in place - to be continued shortly 2 Link to post Share on other sites More sharing options...
RMweb Gold Stubby47 Posted February 19, 2011 RMweb Gold Share Posted February 19, 2011 My brain hurts just trying to get to grips with the sheer size and complexity of these models... ( are we looking at a rival to Jim S-W for dedication to the art of modelling ?) 1 Link to post Share on other sites More sharing options...
Ron Heggs Posted February 19, 2011 Author Share Posted February 19, 2011 My brain hurts just trying to get to grips with the sheer size and complexity of these models... ( are we looking at a rival to Jim S-W for dedication to the art of modelling ?) Hi, Stuart Thanks for all your comments, no intended competition entries here! Ron Link to post Share on other sites More sharing options...
Ron Heggs Posted February 21, 2011 Author Share Posted February 21, 2011 Hi, Look forward to seeing 6 cans on the completed bridge! Amazing work Simon Hi, Simon Sorry, but just couldn't manage 6, so it had to be 8 cans (2640ml - 2.63kg)., and still no discernible distortion. That means at least two Brittannias plus coaches (The Palatine), or the occasional Brittannia piloted by a Black 5 on the bridge Cheers Ron 7 Link to post Share on other sites More sharing options...
iankemp Posted February 21, 2011 Share Posted February 21, 2011 Well that is one way to see how strong that bridge is! I will have to get beck to you when i get the dimensions on the latice work for my bridge as i am away from home where the bridge that i am working on at the min! The latice work that you have done is great! Link to post Share on other sites More sharing options...
taytrain Posted February 21, 2011 Share Posted February 21, 2011 awesome work on show there, very well done Link to post Share on other sites More sharing options...
(The) Youth Posted February 21, 2011 Share Posted February 21, 2011 Great stuff I just hope it doesn't warp over time Simon Link to post Share on other sites More sharing options...
Ron Heggs Posted February 21, 2011 Author Share Posted February 21, 2011 Great stuff I just hope it doesn't warp over time Simon Hi, Simon Thanks for your comments. No warping has taken place with the Train Shed structure over 6/7 years, so I'm hoping this bodes well for the future As they say only time will tell Ron Link to post Share on other sites More sharing options...
Horsetan Posted February 21, 2011 Share Posted February 21, 2011 There are simply no words to describe this project, other than "epic". It all seems to be going along at a huge rate of knots as well, single-handed. Link to post Share on other sites More sharing options...
Mucky Duck Posted February 21, 2011 Share Posted February 21, 2011 Nice beer crate! What a mouth-watering project this is… I'm really looking forward to seeing it all come together, Ron. Link to post Share on other sites More sharing options...
Morphaniel Posted February 21, 2011 Share Posted February 21, 2011 Fantastic! It's taken me two years to detail a Wills retaining wall kit to my requirements - I'm going to have to speed up... Link to post Share on other sites More sharing options...
d winpenny Posted February 22, 2011 Share Posted February 22, 2011 that is a impressive peice of enginnering keep up the good work david Link to post Share on other sites More sharing options...
Guest jim s-w Posted February 22, 2011 Share Posted February 22, 2011 Some excelent work on show here. One question if I may though; Why go to the effort of all the CAD work and then build the structures from plastistrut? Why not laser cut plastic/card/wood or etched brass? Happy modelling. Steven B. Hi Steven If you only did a 1 off you'd be talking about £50 a sheet for an 8"x12". That includes the tool. For 2 of the same about £30 a sheet, 4 about £20, 10 sheets work out about £14 each. HTH Jim 1 Link to post Share on other sites More sharing options...
Ron Heggs Posted February 22, 2011 Author Share Posted February 22, 2011 There are simply no words to describe this project, other than "epic". It all seems to be going along at a huge rate of knots as well, single-handed. Hi, Thanks for your comments I tend to model most nights for about 2/3 hours, as my days are occupied with charity work, walking group, gardening and shopping on Saturdays Ron Link to post Share on other sites More sharing options...
Ron Heggs Posted February 22, 2011 Author Share Posted February 22, 2011 Nice beer crate! What a mouth-watering project this is… I'm really looking forward to seeing it all come together, Ron. Hi, Thanks for all your ongoing comments. I will try and keep the interest alive Ron Link to post Share on other sites More sharing options...
Ron Heggs Posted February 22, 2011 Author Share Posted February 22, 2011 Fantastic! It's taken me two years to detail a Wills retaining wall kit to my requirements - I'm going to have to speed up... Hi, Speed is not important only the outcome. But you don't need to follow your signature to the letter Ron 1 Link to post Share on other sites More sharing options...
Ron Heggs Posted February 22, 2011 Author Share Posted February 22, 2011 that is a impressive peice of enginnering keep up the good work david Hi, David Thanks for your praise, will try not to disappoint Ron Link to post Share on other sites More sharing options...
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