"My brother just finished our fourth trike, a red one, for our 82 year old Mom. I got the plans for the seat from http://sites.google.com/site/recycledrecumbents/seat-frame-construction and I used material from a discarded trampoline to make the webbing.
"I have re-done my trike. I have installed my Nuvenchi drive off of my bicycle added different handlebars and added dual pull brake levers. ~ Mac"
Awesome! How about sending us a picture of your mom riding her trike?