Here it is at 21 scale mph, completed. I'll talk a bit about it after the videos.
I'll probably run in at 25 mph most of the time, as in the video because it runs just a tad smooth, AND . . . at this track voltage, 7VDC, the taxi runs at exactly the same speed as my city buses!!!! Wow. Above that voltage it runs a bit faster than the buses, below that, the other way around: I'm powering the downtown loop with a Tekpower regulated DC power supply that I can set to .1 volt increments so I can dial the voltage in so the two buses and the cab run in virtual lockstep at around 24-25 mph, spaced out about 18 feet apart on the 54 foot loop.
This car will go slowest, with a trace of hesitation but no stalling, at a scale 14 mph. Here it is. sorry the video is so short - I was getting a low battery signal from the camera and decided to cut it short.
My "production" supercapacitor packs consist of three .33F 5.5 Gino supercapacitors taped between two paperclips. Two (see photo below) fit in the body of the of the cab. It is a Solido 1950 Chevy. Those who have one will note that I cut the fender skirts off: even so the rear wheels rub the inside of the body just a bit. The chassis in this case is a shortened chassis for a K-Line by lionel Railroadster (vintage truck with a sort of Model A body - the only 'Streets vehcile prior to the WBB sedans that had truly "car-size" wheels.). I did the conversion about three years ago but since it was too fast to go through downtown have not run it much. It is not a really good runner, not even as good as some other railroadsters - just luck of the draw with this chassis: without the supercaps it will not run smoothly at below 50 mph.
