Originally Posted by
fietsbob
Have a Mountain Tamer Quad adapter, tried it and set it aside 20 years ago will sell .. had a 46,36,26,16t setup.
realistically below a certain ratio only a trike can take advantage of like a 10" gear because you fall over on just 2 wheels..or cannot get the 2nd foot on the pedal because all the momentum goes away, restarting on a hill
I remember seeing ads for those too but I never had one. I agree that super low gears reach the point of diminishing returns when the bike is too slow to remain stable ( probably about 2 mph) and you can't start on any uphill because you can't get your second foot on the pedals before the bike comes to a complete stop. Trikes can, of course, be geared down to nearly zero speed but not bikes.