Re: Commuter in AR
I've never heard of anybody ever having to remove the front derailleur? I searched for a build of the Terra Nova but could not find one.
From what I found it's just a v-frame (correct me if I am wrong) which is what these engines have been designed to mount to? You are speaking of a 49cc 2-stroke engine kit correct? You might just have to raise the motor a bit to clear the derailleur.
Jetting? If it was me I would not worry about it until you get the motor all mounted up and running . You may not have to do any jetting.