what is the capacity of MAGNETIC Field required from a set generator to produce 6000 watts?
Motorcycles are not dangerous people are. That being said of course you have a much better chance to walk away from a car crash with no injuries than a m/c crash. Always wear the proper safety gear and dont drink and drive. You will be fine.
Motorcycles aren't all that dangerous own their own if you ride sensibly, it's the people driving 4 wheels that make it dangerous. My point being that it depends a lot on where you ride and what the traffic is like.
As long as you know what you are doing, you pay close attention to your surroundings, and you dress appropriately you should be very safe. Take a class if you can that will help prepare you and drive in low traffic areas to better prepare yourself. Also remember that most motorists aren't looking for motorcycles. Motorcycles riding is a blast and very exhilarating, but just like everything else there is great responsibility. Prepare yourself and you will be fine.
As a rough rule of thumb you can say that the field requires 10% of the actual power in the output, so that would be something like 600W. That is the electrical power to energise the field. If you want the magnetic flux it depends on a lot of things, but you can say that it approaches the saturated flux density (per unit area) of the magnetic core material when the machine is running at full output, and that in some way forms a total over the pole pieces. A permanent magnet is similar execept that it cannot be adjusted, its flux density forms a total flux which is coupled (and spread out) over the pole pieces. Permanent magnets may tend to get demagnetised by the intense fields formed in the operation of the generator. To work the magnetic flux out you need details of the pole pieces and magnetic circuit, gaps etc. All the parts interact, so it is a significant design exercise. Best to buy a generator.