Small 00 gauge tunnel/bridge?

[1722]

Hi all,

 

apologies if this has already been covered elsewhere (a search using the title didn't seem to show anything).

 

I'm quite inspired by the Helston branch, particularly enjoying the small bridges they use with the limited clearance for stock. I'm currently planning a layout and wondered if there is any kit out there that would produce such an effect? Probably a ridiculous idea but would an n gauge Peco (double?) tunnel mouth work or not?

 

Thanks for any help.

 

Chris

[RedgateModels]

You could use the Scalescenes tunnel portal kit, adjusting the scale on the printer to get the opening you want? it should be possible to build it with vertical sides to the lower sections too. They do a nice random ashlar that would mimic the stone in your pic quite well

[DCB]

The JandJ  models website has dimensions for Metcalfe card kits which is useful.

N bridges and tunnel mouths are typically 50mm high which is 25 feet ish in N but only 12.5 feet in 00 which is some way short of the GWR 13.5 max height for locos etc. The Single track tunnel is too narrow for 00 stock and the Double on the wide side at 60 mm plus.

Width you need 9 scale feet plus a scale foot clearance so 44mm ish

Tunnel mouths usually have the walls come back in at ground level with max width part way up as they are oval in section with an invert below track level. Bridges are usually straight sided, not always but small bridges using a tunnel mouth with an invert will probably look wrong. 

 

Metcalf do have a N gauge viaduct with 50mm wide arches which might provide a basis for a model, but as you only want a bit of it and will probably cover it in 00 stone brickpaper its a bit pricy at over 12 quid. A second hand item would be ideal

[1722]

You could use the Scalescenes tunnel portal kit, adjusting the scale on the printer to get the opening you want? it should be possible to build it with vertical sides to the lower sections too. They do a nice random ashlar that would mimic the stone in your pic quite well

 

 

The JandJ  models website has dimensions for Metcalfe card kits which is useful.

N bridges and tunnel mouths are typically 50mm high which is 25 feet ish in N but only 12.5 feet in 00 which is some way short of the GWR 13.5 max height for locos etc. The Single track tunnel is too narrow for 00 stock and the Double on the wide side at 60 mm plus.

Width you need 9 scale feet plus a scale foot clearance so 44mm ish

Tunnel mouths usually have the walls come back in at ground level with max width part way up as they are oval in section with an invert below track level. Bridges are usually straight sided, not always but small bridges using a tunnel mouth with an invert will probably look wrong. 

 

Metcalf do have a N gauge viaduct with 50mm wide arches which might provide a basis for a model, but as you only want a bit of it and will probably cover it in 00 stone brickpaper its a bit pricy at over 12 quid. A second hand item would be ideal

 

Thank you both for your input. The Scalescenes bridge might be worth looking in to. 

 

David - using those dimensions perhaps a bit of modelling and scratch building one might be the way to go.

 

Thank you again folks. 

[Stubby47]

Not sure if this will help - a scratch-built bridge for Tinner's Forge - http://www.rmweb.co.uk/community/index.php?/topic/118324-tinners-forge/?p=2616458

 

Stu

[1722]

Not sure if this will help - a scratch-built bridge for Tinner's Forge - http://www.rmweb.co.uk/community/index.php?/topic/118324-tinners-forge/?p=2616458

 

Stu

 

Hmm, there's a lot of food for thought there! Thank you!