This has probably been asked before but I have a small spot where I may be able to put a small loop of HO to run some On-30. I would like to use Bachmann track with the built in road bed. Anyone know what the outside diameter is for the tightest curve possible? Thanks.
What’s the radius of said tightest curve? I thin the base is like 1 1/2 inches or 1 5/8 inches wide so add 7/8 to the radius and multiply by 2. The radius will be from the center of the track that’s where the 7/8 comes from.
Matt. What’s the smallest Radius I can go with EZ-track? I only plan on running smaller equipment. Thanks
A standard small curve in HO is 18" radius; adding in extra for the base of the EZ-Track, you need roughly 38" for the circle.
You can go two alternate routes if you are willing to give up the EZ-Track roadbed.
1st, you can find some 15" radius sectional track: t he diameter will be close to a circle of O31.
2nd, you can get flextrack and make the circle the diameter you need.
An important consideration, just as in O, is minimum radius for the equipment. MOST B-mann locos will handle 18" radius. MANY will do the 15". SOME will do 12". A FEW will do as small as 10" or maybe a wee bit smaller. Their freight rolling stock will easily do the 15"; some will do the 12". You can custom build cars to do the 10". The passenger equipment will go a little smaller than 18".
There is a detailed chart out there on the web listing minimum radius for each B-mann piece: http://www.npcrr.net/On30/On30..._Car_Radius_pics.pdf
The charts lists B-mann's numbers and actual test data from users.
Thanks guys. I appreciate the help. Can you tell i’m not an HO guy!?
I used flextrack to lay about 6 inch radius curves for my Bachmann 4 wheel trolley and my Bachmann 0-4-2T and 4 wheel dump cars. Works like a charm........for really small cars. ODD-D