View single post by oztrainz
 Posted: Tue Mar 14th, 2017 01:52 am
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oztrainz



Joined: Wed Apr 10th, 2013
Location: Unanderra, Australia
Posts: 962
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Hi Michael,

There is a rough "rule of thumb" that the width of rolling stock should not be more than 3 times gauge for stability reasons,
but it can be broken (if not shattered) when you get the engineering right.

Have a look at http://www.freerails.com/view_post.php?post_id=85361 and the rest of this thread. 

Forrest's point about overhangs on curves is worth considering, but with the following modifications:
  • the overhang in the middle on a curve becomes worse rapidly as the wagon length (bogie centre distance for bogie wagons) increases.
  • the outside overhang at the end of the wagon gets worse rapidly the further in the bogie centres or axles  are from the end.
  • if your coupling is over/near the outside rail on a curve, you will have derailment issues because of the end overhang.
Now if you follow that "3x rule" and, providing you don't go for excessively long wagons
(remember most 2' gauge rolling stock apart from some of the Maine stuff is usually well under 30' long),
you should be able to get away with 3 to 3 1/2" track spacing on the curves.

At 3' to 3.5" track centres, it might not be a real good idea to be standing between the tracks on a bend as trains pass each other :w:
But the wagons should miss :2t:
At 4" track centres,  not a problem  :2t::2t::bg:




____________________
Regards,
John Garaty
Unanderra in oz
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