Smithy589 Posted February 27 Share Posted February 27 Hi, as there is no 6ft way gauge available yet, can anyone help me with the distance between parallel tracks centre to centre? thanks in advance Colin Link to comment Share on other sites More sharing options...
Baz657 Posted February 27 Share Posted February 27 I 3D printed a load of spacers a while back. I'll dig them out and measure the distance. Link to comment Share on other sites More sharing options...
SMR248 Posted February 27 Share Posted February 27 Radius 2 minus radius 1 perhaps? Link to comment Share on other sites More sharing options...
Postman On The Rails Posted February 27 Share Posted February 27 (edited) 43mm isn’t it? I have west hill wagon work spacers and that’s their measurement Edited February 27 by Postman On The Rails Link to comment Share on other sites More sharing options...
SMR248 Posted February 27 Share Posted February 27 Yes, 43mm, just checked the Tillig website which has that info (Hornby curve radii being based on Tillig's geometry, excluding the points) 1 1 Link to comment Share on other sites More sharing options...
SMR248 Posted February 27 Share Posted February 27 It is strange that Hornby don't provide track geometry information but, on the other hand, their approach is to do what's easiest for them and try to sell you track packs. On the other hand, Tillig's approach involves them selling you special bits of track to make a precise fit (perhaps the average German wouldn't take a saw to a piece of set-track?) 1 Link to comment Share on other sites More sharing options...
96RAF Posted February 27 Share Posted February 27 12 minutes ago, SMR248 said: It is strange that Hornby don't provide track geometry information but, on the other hand, their approach is to do what's easiest for them and try to sell you track packs. On the other hand, Tillig's approach involves them selling you special bits of track to make a precise fit (perhaps the average German wouldn't take a saw to a piece of set-track?) It has been requested. 1 Link to comment Share on other sites More sharing options...
Dodge1965 Posted February 27 Share Posted February 27 https://uk.hornby.com/hornbytt120/getting-started 2 Link to comment Share on other sites More sharing options...
Rallymatt Posted February 27 Share Posted February 27 I knew the geometry had been published somewhere! 👍 Link to comment Share on other sites More sharing options...
Smithy589 Posted February 27 Author Share Posted February 27 Thanks for this I am just in process of designing up a layout schematic to see what is practicable. regards Colin 1 Link to comment Share on other sites More sharing options...
StuLarge Posted February 27 Share Posted February 27 If you happen to use track planning software (I use Anyrail) use a set of points to set and check the track centers 👍🏼 1 Link to comment Share on other sites More sharing options...
ateshci Posted February 28 Share Posted February 28 For straight parallel track, you can even reduce the distance to 34mm center to center. Link to comment Share on other sites More sharing options...
96RAF Posted February 28 Share Posted February 28 Somewhere on this forum in the TT120 section is a diagram of routing parallel tracks around a platform. I cannot remember the track to track dims if they were even quoted. Link to comment Share on other sites More sharing options...
Fishmanoz Posted February 28 Share Posted February 28 Hasn’t anyone done a little subtraction? R4 - R3 R3 - R2 R2 - R1 Answer - 43mm And that’s the same as the spacing from 2 points in a crossover or one point and an R6 to bring it back to parallel. Or similar if you use a (correct) crossing rather than a point. 1 Link to comment Share on other sites More sharing options...
Peachy Posted February 29 Share Posted February 29 Unless you’re using Peco. When joining points on AnyRail, their parallel spacing comes out at 36mm. I think that’s possibly more prototypical. I'm looking forward to receiving the Mk3 coaches to see what clearance is needed on the curves. Link to comment Share on other sites More sharing options...
StuLarge Posted February 29 Share Posted February 29 36 minutes ago, Peachy said: I'm looking forward to receiving the Mk3 coaches to see what clearance is needed on the curves. Pencil taped to the corner and middle, mark it out and measure video? 😉 Essential for planning curved platforms 👍🏼 Seem to recall my 00 Lima HST hitting the Hornby Flying Scotsman Gresley Coaches every time they passed on a corner as a kid, can't remember the radius... Only the frustration and disappointment. 1 Link to comment Share on other sites More sharing options...
Baz657 Posted March 1 Share Posted March 1 My spacers were printed at 43mm. That space worked well on the curves and tied up nicely with points and crossovers. Link to comment Share on other sites More sharing options...
SMR248 Posted March 1 Share Posted March 1 On 28/02/2024 at 23:20, Fishmanoz said: Hasn’t anyone done a little subtraction? R4 - R3 R3 - R2 R2 - R1 Answer - 43mm And that’s the same as the spacing from 2 points in a crossover or one point and an R6 to bring it back to parallel. Or similar if you use a (correct) crossing rather than a point. The average Brit doesn't do "difficult maths" like "taking away"... You're very kind to give the answer though. One of the supposed advantages of TT120 is that it is an "easy" scale ratio to work with, ie 0.1" to 1'. I realise that this is totally unhelpful to most people, particularly as it's in feet and inches, but... Incidentally the R*c* track system uses slightly different dimensions but you don't want to be using that... Mod note - see guideline 1. You are allowed to name other brands in full. Link to comment Share on other sites More sharing options...
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