Are lionel lionmaster steam engines compatible with Sensor Track?
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Compatible how? Will the engine cross one? I assume?
Jon 
if your engine/tender has an IR reader attached then yes,
Oh! Well in that case, MOST were made well before the IR track was invented.
Jon
gibson man posted:Are lionel lionmaster steam engines compatible with Sensor Track?
Only Legacy Lionmaster engines that were produced after around 2012 when the sensors were added to the locomotives.
An option if you can find one is the 6-83519 REA Scale Sensor Boxcar. This boxcar was made to add sensor capabilities to earlier Legacy engines without a sensor and to a lesser amount TMCC engines. I've been told Lionel has a lot of these because folks didn't understand what the purpose was or how they worked but so far I haven't seen them at the warehouse sale.
LionMaster is simply the name for larger engines that have been proportioned to fit on smaller layouts. The name doesn't necessarily identify the electronics in them.
As Marty stated, Legacy LionMaster engines do have the sensor track capability built-in.
LionChief Plus 2.0 LionMaster engines do not. This would be the newest Big Boy, SD80MAC, and Allegheny. None of which have shipped from Lionel yet.
I grabbed a few of the sensor cars when people were selling them cheap, they do allow you to add functionality to older equipment. 
I bought some of the REA sensor cars and swapped the frame with the electronics into compatible reefers from various railroads. They look good behind engines of the same RR.
My plan as well Chuck, I figured once I have them, I can deal with "customizing" them later.
The hardest part was exchanging the bottom rung on the ladders. Some just popped off and some took a little effort. But ultimately, they all got exchanged and look great.
