Ken, in your referenced article, he talks about 3 types of tag axles: steerable, liftable, and unloaded. As you know, Newell used the unloaded tag until the ZF steerable came along. Prevost has used the liftable tag on many coaches, not sure if they produced any steerable tags. MCI has produced coaches with steerable coaches (passive beginning in 1992 active hydraulic beginning in 1998) and the Blue Bird Wanderlodge LXI came with a steerable tag. I am not sure that the article implies that steerable tags can be lifted. The article does indicate that most liftable or unloadable tags automatically deactivate at speeds above 8 mph. My tag unload switch is completely manual and does not deactivate at speed although I haven't driven over 8-10 mph with the tag axle unloaded.
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