I agree GRJ, just the messenger here. Although it has been my experience too that Lionel 27 ohm units are longer (16.3 mm) than their 16 and 8 ohm elements (14.6 mm) counterparts. What Lionel P/N is the shorter 27 ohm, or do you procure those (and other smoke elements) from another source? Thanks. A shorter length element does make Franklin and HO AF installation a little simpler since the cylindrical chamber into which it is positioned is pretty short. But in this case the 16ohm potential for overheating (when run 5+ minutes at >12VAC) trade-off isn't in my opinion worth the shorter length. A similar length 27 would be ideal. Thanks.
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