Rallymatt Posted March 17 Share Posted March 17 I’m popping this link here as TT:120 is resulting in a big surge in new layout builds and many fresh modellers. There has been quite a bit of interest in inclines/gradients etc for new layouts. Märklin of Sweden is a fantastic modellers resource, Martin is entertaining, always happy and very generous with his knowledge. This particular video has lots of useful info on using gradients on a model railway so hope it inspires and helps. Id recommend subscribing to his channel and catch up on the many tutorial videos he has made. This guy is a professional but happy to share. 3 Link to comment Share on other sites More sharing options...
Postman On The Rails Posted March 17 Share Posted March 17 Planned my flyover but not built yet Link to comment Share on other sites More sharing options...
StuLarge Posted March 17 Share Posted March 17 Very good, interesting comment on tyres and flanges. Wonder how the Hornby products compare without them 1 Link to comment Share on other sites More sharing options...
Rallymatt Posted March 17 Author Share Posted March 17 TT:120 wheels and flanges are a little bigger in proportion to modern OO/HO (N similar) and lack of traction tyres will reduce the tractive ability further… might be a worthwhile experiment to establish what that really means. Link to comment Share on other sites More sharing options...
ateshci Posted March 18 Share Posted March 18 Most important is the vertical transient radius from level to grade. It should be 5' both at start and end. As traction tyres are nowhere in sight for the A3/4s, one may consider magnets and steel sheet like e. g. 'Powerbase' under the track. Link to comment Share on other sites More sharing options...
Silver Fox 17 Posted March 18 Share Posted March 18 4 minutes ago, ateshci said: Most important is the vertical transient radius from level to grade. It should be 5' both at start and end. As traction tyres are nowhere in sight for the A3/4s, one may consider magnets and steel sheet like e. g. 'Powerbase' under the track. What do you mean 'traction tyres are nowhere in sight for the A3/4's"? Are they looking at putting them on? I certainly hope not, tyres are okay for cars and the Paris Metro but definately not for our trains. Link to comment Share on other sites More sharing options...
ateshci Posted March 18 Share Posted March 18 I know the age-old discussion between purists and others. It doesn't do away with the fact that: a) our grades are too steep in most cases b) the locos' chassis are not flexible as the prototype's c) our tolerances are nowhere near scale But we want to see some trains going over the hill - so there must be 'a lot of compromising on the way to my horizon' Traction tyres - of course, if possible! 1 Link to comment Share on other sites More sharing options...
ntpntpntp Posted March 18 Share Posted March 18 Biggest mistake not fitting traction tyres IMO. Most of my European N pacific and similar locos will outpull the TT:120 A4 I have. Link to comment Share on other sites More sharing options...
Silver Fox 17 Posted March 18 Share Posted March 18 Since TT 120 was announced nearly everyone shouts "at last, true scale", well have scale gradients then. Keep tyres for the roads (and European models if they wish), I have read the European 66 will have tyres, thankfully I will have a British one without. Link to comment Share on other sites More sharing options...
Silver Fox 17 Posted March 18 Share Posted March 18 Compromise was mentioned so why not compromise on train lengths? Link to comment Share on other sites More sharing options...
Rallymatt Posted March 18 Author Share Posted March 18 (edited) Just a point on magnets in base etc, they will add to the drag so not always the fix people assume. Edited March 18 by Rallymatt Spooling area 1 Link to comment Share on other sites More sharing options...
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