Quite the nice little build, now I thought I'd let you know that when you test run on it on the track for the first time to keep an eye on the tail end as I think It's going to be a bit front heavy considering the boiler seems to be more central above the front driver and that you have your burner at the front. Easy way to fix that if you really want to keep the burner at the front is to add a bit of weight to the rear to balance it out or to move the burner to the rear. All in all a nice little build and I can't wait to see it finished! Those larger drivers should give it a decent little speed on the track as well.
You know not everyone is creative enough to build something like this nice work you should make your own live steam engine and some how use a body or shell of one of our known engines like the n&w j class or the gs4 what ever Engine you like I guess but you have the skill so why not
