Originally Posted by VegasTriker

In your previous post you mentioned that you were in the market for an entry level trike. The trikes with decent gearing and a wide range are not entry level.

I'd suggest you use the Mike Sherman (Mike Sherman's Bicycle Gear Calculator) or Sheldon Brown (https://www.sheldonbrown.com/gear-calc.html) gear calculators to make exact comparisons between different drive train combinations. If you use Mike Sherman's calculator and do the calculation for Catrikes with the 30/39/52 chainrings and 11/36 cassette will be: 20" drive 15.9-90.1 gear inches, 700C drive 20.9 - 124.2 GI. The latter is about what you find on many road bikes.

I also own an older Greenspeed GTO which has a single 65 tooth chainring and Schlumpf Mountain Drive in the front and SRAM dual-drive 8 speed in the rear. If I recall correctly, the gear range is around 14 to 140 gear inches. SRAM no longer makes the dual-drive rear hub so this combination is not available today. It was a system that always had a gear range to suit the terrain even on the steepest of hills. It is very expensive to duplicate something that gives you a similar gear range. This was about a $5K trike when still available.

When you first start out trike riding you will probably need lower gears compared to what you need after you get your "trike legs". My first trike had the 19-90 GI drive and I needed the low gear range but after riding for a few months consistently I wanted something more on the high end but didn't need the low end as much. These days I ride my 2013 Catrike 700 in the middle chainring almost all of the time which means a 28.5-93.2 gear inch range suits me just fine. That would have been tough when I first started out.