You musta missed it the first time I answered this question Wayne...
That isn't my trike, this one here is (attached), and the trike listed under Tomos in the PHOTOS section...
If that's really a Tomos engine powering that dark green looking one with the fat rear tires, I'd bet it only does 12mph - and if you look close, it's fairly obvious that's not a Tomos and never was.
The blue and white one listed as 3 wheeled moped, that's close, and it is based on the Pryer rear end, but mine isn't nearly that finished, no.
Mine's a top tank, for the range and extra frame stability, and I haven't yet decided exactly how to set up the rear section.
Also, the blue and white is a hardtail, as most Tomos trikes are, since working out some kind of chain adjustment is very difficult and a hardtail makes that less necessary.
Mine has two nice beefy shocks back there, which, combined with the weight, makes for a nice smooth ride even on these michigan washboards they call roads.
All in all, I think mine just flat kicks ass, even in the rough shape it's currently in.