For europorsche914: I am doing thorough consumer market research on motorized bicycles before I purchase one; I want to educate myself about who makes the best 4-stroke engines, the best rear drive sprocket / wheel hub, rim and spoke design, the best braking system (for beach cruiser type gas powered bicycles), and who makes the best, most versatile bicycle cargo trailers people can legally pull while attached to the back of their bicycle whether powered by gas, electric, or human pedal power. Just now (Mon., 02-11-12) I conducted an internet search on gas powered bicycle locking gas caps; I want a locking gas cap for the motorized bicycle I end up buying. Do all gas powered bicycle manufacturers use a universal stock gas cap for the gas tank, or are there different sizes according to the individual gas tank manufacturer? In case you or anyone else who reads this is curious, the name of the company that makes the most versatile bicycle cargo trailer that can be hitched to a beach cruiser type or similar type motorized bicycle frame and legally pulled in the bike lane or shoulder of the road, is Bikes At Work Inc. (
www.bikesatwork.com). Bikes At Work Inc. makes all aluminum two wheel trailers that can carry as much as 300 pounds or more. The tailers are assembled in segments so the buyer can make their trailer longer or shorter. Motorbicycling.com members may also be interested in knowing that an owner / mechanic of Easy Cruiser motorized bicycles in Dana Point, CA, told me that the State of California is or, has already outlawed the sale of gas powered bicycles with 2-stroke engines. In fact, it may be currently illegal to ride a gas powered bicycle with a 2-stroke engine in Orange County, CA. Easy Cruiser motorized bicycle shop showed me a two-piece machined clamp that sells as a modification item for the rear drive sprocket. The two-piece part allows the rear drive sprocket to only put torc strain on the rear hub instead of on the spokes of the rear wheel rim. I think Easy Cruiser sells the 2-piece part for about $60.00, but I think you have to use it on a wheel hub that does not have an existing drive sprocket attachment connected to the spokes of the rear wheel / hub. Easy Cruiser also sells and installs a brake system that uses just one hand lever to simultaneously apply brakes to both the front and rear brakes. Beach cruiser gas powered bicycles usually sell having just front brakes controlled with a hand lever on the handlebars. They also sell wheels with heavy-duty rims and thicker gauge spokes.