Based on watching my 9 year old son's reaction to the MOW Crane Car that arrived yesterday, this has to be the best O Gauge item Lionel has ever made. He just kept saying "That is so cool." I hope this helps build interest that keeps him coming back over the years. He just has a carpet railroad at the moment so I don't think this crane is going to stay out on his layout since knocking it over accidentally looks like a world of hurt if the threads get tangled. But I have a 2000 reissue of the gantry crane that I've finally located an ERR crane controller for. So hopefully I can add that to his carpet railroad in a "safe corner" close to the wall where the dog isn't going to pose a problem. I think that'll give him 75% of the cool factor of this crane car.
I had some initial problem with cab rotation in one direction but that was solved by revisiting the gear engagement lever. It looks like the gear popped back out between my pushing it in and moving the lever to the left. I didn't really "get" that the lever was holding the gear in place. I thought it was actually causing gear engagement somewhere I couldn't see. Once I understood the intent everything worked as designed.
The outrigger launching - particularly it's sequential nature - really impressed my son. After getting the cab rotating 180 degrees in both directions we tried the hooks. Having something as minor as a Lego tire hanging from the hook really helped going down. We hadn't raised the boom much at this point, but had no problems raising and lowering both hooks about a half dozen times. Next we cycled the boom up and down through it's full range of motion. At this point we encountered a problem - the large hook would go down but not up. Pretty soon I had a LOT of string out and moved the track and transformer to the table and had the hook over the edge. There was no motor noise or movement at all when pressing the up button on the Cab1. (I have legacy and the Cab2 but we were using my son's Cab1 during the demo.) I tried some more boom up and down movement but that didn't resolve anything. There are limit switches that seem intended to shut down raising the small and large hooks once they reach the top of the boom. I tried playing with the one for the large hook to see if it might be stuck - although I'd not raised either hook enough to actually engage the limit switches. (It looks like there are limit switches on boom up and boom down as well. It's just AMAZING what Lionel has engineered into this thing. This thing has complications to rival expensive self winding swiss watches!) On second thought I dismissed the large hook limit switch since the large hook would go down. But thinking on it more I'm back to the opinion this could be part of the issue since it's probably just meant to shut off the motor continuing to try to raise the hook once it's already all the way up. It probably has no part of whether the motor lowers the hook or not.
Either a wire came off the board, off the motor, the limit switch is faulty or the wire for the limit switch has shorted somewhere making the board think the hook is all the way at the top of the boom. Those are my primary guesses. I don't think the motor is bad as the same motor works the hook up and down. And going down is still functioning. The up button on the Cab1 is still causing hook movement sounds on the matching boom car when pressed to it's not the button or TMCC. I'm not sure whether lowering and raising the boom through it's full range of motion contributed to the issue or not. But that is what we were doing immediately before the problem surfaced. It certainly would have tested the play built into the routing of the limit switch wires.
The other minor disappointment was that after carefully removing the crane originally, the eyelets and hooks intended as prototypical "decoration" were in the bottom of the styrofoam. I'd already read the manual about not trying to use them "for real" so I'd intended to just take the hooks out and put them where I wouldn't loose them. It didn't look like there was enough of a hole to receive the stub end of the eyelet to really hold it tight in the first place.
I reapplied tension to both hooks, packed everything just as it was and shipped it off to Concord. I've converted 1950's engines to full command control but I had ZERO desire to open the guts of this beast. This thing is just too complicated. The folks in Concord will get things sorted out. I think in the end it will be minor.
And one more tip of the hat to the folks who engineered this thing. It's a marvel. It'll be THE thing on my dream layout whenever I get that built.