So are the NMRA RP25 contour that we use...
Don

On Apr 8, 2011, at 5:39 PM, Richard Karnes wrote:

> All --
>
> Apparenty guesswork is more fun than research. Prototype wheel  
> treads are
> manufactured with a three degree taper.
>
> Dick Karnes
>
>
> 



[Non-text portions of this message have been removed]



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