thank you for the answer. I see one video on youtube and trike bike pass road bikes maybe is fake video i not know. I have road bike but recumbent bike make me interesting but i not know anythink about trikes. And i not know if trike is go be okay for hilly trail i go have elevation from 700 feet to 900 feet. On my road bike i have crank 53/39 and 9 speeds cassete 12-25. In hills is very hard i need bigger cassete but i cant deside or not know wich cassete is can be good for hills