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  1. P

    minimum switch frog radius number for 4-8-4?

    thank you for all your helpful responses!
  2. P

    minimum switch frog radius number for 4-8-4?

    thanks for the reply.... Also, I know my bachmann daylight 4-8-4 (5449), can not do an 18" radius curve. Question is as long as I make the turn after the number 4 switch into a 22" minmum turn...will the 484 still make that #4 successful?
  3. P

    minimum switch frog radius number for 4-8-4?

    What is the minimum frog number for a 4-8-4? I think a #4 frog turns into an 18" radius turn, but can the #4 frog on a switch be used safely (without derailments) on a 4-8-4? Or should I go up to a #6 for a good rule of thumb for minimum frog number? anybody?
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