Thanks, guys. Yes, it is roughly based on a larger (10 ton?) Mancha unit that I was able to get some dimensions from for general feasibility. No attempt was made to actually model specific details in that video, just to get the general shape and envelope dimensions to see if it looked about right from a galloping horse. In Nn3 (1:160 scale using Z 1:220 track), which that is, I'm kinda' stuck with the bigger battery versions as I can't get much smaller and still have the performance that this has. But what's nice is the same basic mechanism can be made for HO scale narrow gauge using N track and it doesn't have to get any higher so scale heights can be as little as 35" from rail to top of a body shell.
![Shocked :shock:](./images/smilies/icon_eek.gif)
That's small enough to model just about anything.
If this goes into production an N track chassis will be built for that purpose as well as many other small locos like the Whitcombs, GE 25 tonners, and maybe even the Fairmont Speeders for HO, maybe even N. Got the performance sorted out but still updating the chassis design for final testing and packaging of various features and options (like DCC control) so completed models with all of the accoutrements won't be out anytime too soon. It's been fun and an amazing challenge getting this kind of performance in such a small package as well as a first class lesson in why nothing like it exists.
![Wink :wink:](./images/smilies/icon_wink.gif)
It could be the poster child for the old saying, "The devil is in the details".