4 stroke vs 2 stroke

I want to complete my first build, and am looking for 4 stroke kit recommendations. I've heard they're quieter, a bit more reliable, and from the speed tests I've watched on youtube there's not a huge difference in speed. I need something cheap and easy for a daily commuter, 11 miles to work and...

hello. i am planning on putting a bike motor kit into a 26 inch mountain bike. i am good with my hands, though dont have welding equipment available or else i would hack something in. i live in my rv, so this is a big investment for me. im trying to put this thing together so i can go to...