build help newbie design

I was just scrolling gumtree and came across a cheap new in box motorised kit the guy said he is unsure if it's a 80 or a 50, I'm going for a look and I wouldn't know how to tell let alone if all the parts are there and what makes a good kit from a bad one? I'd imagine I wouldn't want a flat...

So, I recently bought this kit: https://www.gasbike.net/collections/bicycle-engine-kits/products/79cc-monster-90-bike-engine-kit-complete-4-stroke-kit I threw it on a brand new beach cruiser and it was riding fine for a day or two. Then the chain tensioner came loose and broke my spokes. (I'm...

Hey guys I've been here for a while, stopped considering a motorized bike and looks for the a bigger motorcycle. But it turns out my dad can't help me with financial responsibility if I will get one (I'm just earning minimum wage). Now I'm planning to convert my fixie with a flip flop hub. I'm...

Good evening everyone. My name is Adam, I am 22 years old and I am currently seeking advice on my first build and whether or not a build would be a possibility on my current rig which I have right now. Given the measurements of my ride (which I will post below shortly), I am not entirely sure...