2013 November 25

2013 November 25

Playing with the R Class?

Really the grade is pretty small, varies between 1% and 2%. The curve is wide and should help with grip, no?


  1. Hello Graeme.
    Two points :)
    The train does get dragged through a 36" radius curve and a curved point before S bending into the Helix. I guess these flat curves contribute to a stall, less than a peco flex track length into the climb. And remember the transition grade is barely above flat for the first foot or so. In this case it is curve drag that stops the train? Pretty poor show if you ask me :(
    My Austrains Y Class does get the whole train up into the Helix, but does stall fairly quickly thereafter. Two T Classes get the train to the top individually. An Austrains Low Nose and a BRM Flat Top!
    I was told that it is the differential action of wheels connected by a slid axle that creates drag. Real Railways mitigate this somewhat by using super elevation. I tried to do the same and lifted the outside edge of the Helix by .5 cm (5mm) over the width of 17.5cm (175mm) I noticed a few cases this has slipped, and I will need to reattach it, but the stall at the bottom was unaffected by these problems.
    Rod Young


All comments and suggestions from like minded individuals always welcomed. Help make this railway better :D