The Ongoing Search for Maximum Power... except its a 48cc

I mentioned my project bike in another thread and some people showed interest in an update as I make slow but steady progress on modifications such as porting, planeing, jetting etc. (maybe Sturmey Archer trans upgrade?). This thread is where I will make those updates.

Little background: bought a 50cc kit off amazon for about $120. Replaced all the hardware with good stuff from the hardware store. Upgraded to a CNS carb and a little banana expansion chamber with a muffler, as well as a 50 tooth. There is more on the bike itself if your interested in this thread Off Road Bike Builds. Been a good little motor for me but the lack of displacement is leaving more to be desired. And the reason I don't just buy a Zeda or PK80, I guess enjoy the thought of squeezing as much power out of this thing as possible.

So, if no one really cares let me know and I won't bother to update, but I'd be happy to keep this thread alive if you guys want to see what I'm working on.

Thanks
 
Similar aluminum racks have about 45 lb capacity. Steel may or may not have more but then the problem gets shifted to how much the wheels can handle. After the wheels it gets to be how much can the frame handle. A diamond frame bicycle is three triangles and typically sturdy. Usual failure is at the joints or rusted through tubing.
 
45 lbs is more than it sounds, at least to me, but my exercise is calisthenics and cardio. In Europe and Asia commuters will put some serious loads on tanks of bikes, touring comes close but obvious costs more as it's a niche activity.

Calisthenics requires almost no money, maybe a yoga mat, but you can train strength, flexibility and balance with 10-15 minutes a day. Even at two weeks the difference is appreciable. It's really helped reduce tension in my shoulders and reduce tenderness in my lower back and quads.

Cardio requires good footwear whether you hike, or run. Cycling obviously has a higher investment but a cheap bike and trainer can go a long way with basic interval training.
 
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