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6 and 8 Turnout Radius

Here’s a question from Matt:

“Does anyone know the radius of an HO Atlas or Peco turnout numbers 6 and 8?”

You can add or view comments below.

5 Responses to 6 and 8 Turnout Radius

  • ROBERT SCHWORM says:

    Go to Google.com and enter this – – –

    determining the radius of a number 6 switch

  • phil johnson says:

    I think the radius for a #6 is close to 54″ rad. #8 is 96″

  • Hervey says:

    Peco radius for #6 is about 43″ & #8 is just over 67″.

  • Ralph Furth says:

    Matt

    Turnouts don’t have a radius, since they have an angle of a frog. They are connected by the diverging rail. The curve does not have a true radius, since it starts straight and curves
    until it meets the angle of the frog. In other words, don’t put the turnout in a circle and expect it to remain a circle. In choosing a turnout, if you have the space, use the #6, it puts less strain on the couplers.

    Turnout Number #6
    Lead 6.25”
    Frog Angle 9 degrees 32’
    Closure Radius 43”

    Turnout Number #8
    Lead 9.00”
    Frog Angle 7 degrees 09’
    Closure Radius 67”

    Ralph

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