Originally Posted by
xTHExSA1NTx
Manna monster, I'm thinking of a 12t pinion and maybe a 65t spur?
No, you are going the wrong way. You want something like a 16/54.
Be carfeul though, I would recommend doing one gear at a time 2-3 teeth at a time. If you make too big of a jump then you will be sluggish at the bottom and you can hurt your equipment.