ORIGINAL: ol_seabee
They outlawed ATC 3 wheel motorcycles for being unstable so there is your tricycle gear analogy reality
They replaced the ATC's with quads
This thread is so off topic that I'm going post this before someone makes me give another 'on topic' talk.
That example doesn't make any sense as one of the ATC wheels is **steerable** I've never seen a barstool with one steerable wheel! The Bell Jetranger used two 3 point mount systems called pylons for the main transmissions. One on each side of the xmission.