Hey guys.Wanna build alone some(friend is battery guy) fat e bike.As you can imagine to buy something in my size is f. expensive just custom build.it’s a challenge i wanna do with my friend.My weight is 120 kg(250? ).Just wanna tips what engine to use,frame i know i need 60 cm ST (my current bike is 67’ size!!!).What materials or bike scratch i should copy?!Bike is to use all around.Sorry for my english it’s not perfect.