HO Radius

Discussion in 'HO Scale Model Trains' started by wabana kid, Mar 19, 2007.

  1. wabana kid

    wabana kid New Member

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    I am planning a new section on my layout , which is going to be small and the radius is going to 15" my question is what steam engines will run on a 15" radius ?

    Cheers
    John
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  2. Russ Bellinis

    Russ Bellinis Active Member

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    Probably 0-4-0, 0-6-0, 2-6-0 Mogul (maybe), 4-4-0, perhaps 4-4-2. If you have a hobby shop that stocks trains, I would suggest you put a 15 inch radius circle of test track on a small plywood board and hook up a power pack to it. Take it in to your local hobby shop and see if they will let you plug it in and test run some steam engines before you buy.
  3. stuart_canada

    stuart_canada Member

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    you will be very limited to most smaller steamers, can you fit 18 " in your plan or space?
  4. wabana kid

    wabana kid New Member

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    Ho 15" Radius

    15" would work best for me, I would like to run a climax or shaw engine, I could be dreaming :rolleyes:

    Cheers
    John
  5. Glen Haasdyk

    Glen Haasdyk Active Member

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    A roundhouse climax might do a 15" curve. It'll probably complain a bit doing it though.
  6. pgandw

    pgandw Active Member

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    My Roundhouse Climax will easily do a 15" radius curve. It's a noisy beast under any conditions - needs work!

    The AHM/Rivarossi Heisler (2 truck) will also do 15" radius. The Roundhouse and Keystone Shay kits should be able to do 15" radius with some careful work and testing during assembly.

    Like Russ said, when using smaller than normal radius, testing is everything. Individual models can vary a lot depending on how well the track is laid, what couplers are installed, what cars they are pulling, etc. Shay minimum radius is going to vary with which side the line shafts are on - keeping line shafts on the outside allows for tighter turns. There are no guarantees due to the many factors - that's why you need to test under conditions as close to your layout as you can get.
  7. Iron Goat

    Iron Goat Member

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    John, I have a Bachmann Spectrum 4-6-0 that takes 15" rad. curves (every now and then she'll gripe about it)... I will only use 15" on my ore mine siding, however.

    Bob