• Viaduct Kit: Mid Span Kit OO gauge only Pop Up Design 3D Wooden Interactive Gift Card DIY Craft Model Builds
  • Viaduct Kit: Mid Span Kit OO gauge only Pop Up Design 3D Wooden Interactive Gift Card DIY Craft Model Builds
  • Viaduct Kit: Mid Span Kit OO gauge only Pop Up Design 3D Wooden Interactive Gift Card DIY Craft Model Builds
  • Viaduct Kit: Mid Span Kit OO gauge only Pop Up Design 3D Wooden Interactive Gift Card DIY Craft Model Builds
  • Viaduct Kit: Mid Span Kit OO gauge only Pop Up Design 3D Wooden Interactive Gift Card DIY Craft Model Builds
  • Viaduct Kit: Mid Span Kit OO gauge only Pop Up Design 3D Wooden Interactive Gift Card DIY Craft Model Builds
  • Viaduct Kit: Mid Span Kit OO gauge only Pop Up Design 3D Wooden Interactive Gift Card DIY Craft Model Builds
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Viaduct Kit: Mid Span Kit

Viaduct Kit: Mid Span Kit

£15.00 GBP
£15.00 GBP
Sale Sold out
Gauge

Viaduct “MID SPAN” Kit    Laser Cut Self-Assembly Model 

These kits are inspired by the viaducts that lie on the West Highland Line in Scotland. In particular, the Rannoch Viaduct North of Rannoch Station and the Gaur Viaduct South of the station. There are 3 base kits. One for the 2 end “parapet spans” of Rannoch; one for the 2 end “parapet” spans of Gaur; and a single “Mid” span kit which can be used in multiples to suit your requirements on the number of spans you wish. The actual Rannoch has 9 spans in total and Gaur 5.

These instructions cover the Viaduct “Mid Span”. Note this kit MUST be used with either the Gaur or Rannoch Parapet Span kits.

This bespoke 1 x A3 laser cut 3mm plywood sheet (Fence posts on 1.5mm ply) model has been designed (in 1/76 scale) to reflect the detail of this iconic viaduct.

The Viaduct requires glue. Choose a glue that allows at least a minute before setting to allow adjustments to be made during the build. Always test the build before using glue.

OPTIONS

The viaduct can be assembled with a variety of options:

  1. Mid span kits can be purchased to increase the length of the viaduct. Each Mid Span kit will add 282mm to the length.
  2. The height of the central piers can be adjusted slightly by either gluing the “telescopic” parts slightly further out OR by cutting the lengths of the telescopic parts so they shorten.
  3. The central pier has the option of either an “on land” pier with a square base OR as an “in water” pier where the base has pointed ends to divert the water flow around the pier
Important Information About Railway Scaling

All dimension drawings are supplied in OO gauge.

All kits are designed in OO gauge using 3 mm plywood. When scaling the digital files to other gauges, there are a few considerations to take into account. The instructions supplied with your kit will be the OO gauge version, as the build order remains the same across the different scales.

TT:120 Gauge:
All TT:120 gauge kits are scaled to 66% of the size of the original OO gauge model. The mathematically correct conversion from OO to TT:120 is approximately 63.33%, meaning that our TT:120 models are intentionally slightly oversized.

We use the 66% scaling factor because the material thickness required for a true 63.33% reduction is not readily available. By using 66% scaling and 2 mm plywood, we can offer our full range of kits in TT:120 while maintaining the correct fit and assembly of the original designs, without the manual modifications required for our O gauge kits.
This means our TT:120 models are approximately 4.2% larger than mathematically exact 1:120 scale, but this allows us to retain the design detail, strength and ease of assembly of our kits.
If you have any other questions, tips or enquiries, please don't hesitate to contact us via our email address or contact form.

N Gauge:
Scaling to N gauge works well and requires no additional modifications due to the material thickness. Some parts will be very fine, so take care when removing them from the frame. If some window pieces are particularly fine, they can be reinforced by soaking them in glue before assembly.

O Gauge Orders:
When scaling to O gauge, some manual modifications may be required during assembly. This is due to the increased material thickness required when scaling from the 3 mm plywood used for OO gauge. At true O gauge scale, the equivalent material thickness would be approximately 5.25 mm. As this thickness of plywood is not readily available, we use the closest available thickness, 4 mm plywood.

Each design is modified to account for the reduced material thickness, but some manual adjustment may still be required during assembly. We recommend dry-fitting the parts before gluing so that any joints that require light sanding can be identified and adjusted for a flush finish.

This kit is designed by Iain Ross and sold by PopUp Designs with his permission.
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