bordercollie
Member
- Location
- Australia
Hi
I have attached a file showing how far I have got with timbering a 1:7 crossover.
I am working on GWR Old type curved switches using 9' minumum length sleepers and timbering. On reading the crossing timber section of GWR switching and crossing practice I am assuming that early practise c1900 was in force i.e 14" x 6" was only used for supporting the crossing nose, 12" x 6" for rest except that 10" x 5" sleepers used for first 2 supports at toe end.
I am wondering if it is possible to easiily see the timber spacing between centres rather than working out the difference of the distances from the start off the rail at toe end. I can find out the centre J2 is 12.5' and J1 is 39.5" . Thus J1 to J2 centre to centre is 2'3". However, is it possible to see centre to centre of any two adjacent at a glance?
When extending timber length from one turnout there is what looks like a 3" offset to that of lengthening timbers of the other turnout.The timber lengths are the same.They seem to be displace by about 3'' so there is a slight step when going between the two turnout templates (i.e. when straight stock rails of each turnout are examined). It would be easy to even them up when making the model track work but is this prototypical?
Track work returns to plain track when RF to RF is 3'0". Is there a way to measure this. In my attempt so far I have 17 through timbers. I am not sure if this is too many. I made a rough estimate by lengthening a timber from roughly the from RF of one crossing "V" leg to the RF of the other "V" leg to get the approximate measurement of 3' Is there a more accurate method?
I have a few more queries but I think this enough for one topic,
Regards
Graham
I have attached a file showing how far I have got with timbering a 1:7 crossover.
I am working on GWR Old type curved switches using 9' minumum length sleepers and timbering. On reading the crossing timber section of GWR switching and crossing practice I am assuming that early practise c1900 was in force i.e 14" x 6" was only used for supporting the crossing nose, 12" x 6" for rest except that 10" x 5" sleepers used for first 2 supports at toe end.
I am wondering if it is possible to easiily see the timber spacing between centres rather than working out the difference of the distances from the start off the rail at toe end. I can find out the centre J2 is 12.5' and J1 is 39.5" . Thus J1 to J2 centre to centre is 2'3". However, is it possible to see centre to centre of any two adjacent at a glance?
When extending timber length from one turnout there is what looks like a 3" offset to that of lengthening timbers of the other turnout.The timber lengths are the same.They seem to be displace by about 3'' so there is a slight step when going between the two turnout templates (i.e. when straight stock rails of each turnout are examined). It would be easy to even them up when making the model track work but is this prototypical?
Track work returns to plain track when RF to RF is 3'0". Is there a way to measure this. In my attempt so far I have 17 through timbers. I am not sure if this is too many. I made a rough estimate by lengthening a timber from roughly the from RF of one crossing "V" leg to the RF of the other "V" leg to get the approximate measurement of 3' Is there a more accurate method?
I have a few more queries but I think this enough for one topic,
Regards
Graham
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