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<p>A specific problem you will encounter with insulfrog turnouts is that certain locomotives with wide tread wheels may cause a momentary short circuit when crossing insulfrog (Bachmann 44-ton, rolling stock and locomotives with wide metal truck side frames).  The short occurs at the point where the non-stock rails join the plastic frog.  The only solutions I have found are to paint the frog and non-stock rails or to cut gaps and isolate the insulfrog and power the rails in the same manner as the electrofrog turnout. I also CA styrene into the gaps to prevent them from ever closing.   </p>
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