hello.
thanx again for all the response. yes i bought the Son28 from Prick White, i have the wheel on the bike (should be by now, the shop owner has had the wheel for a week).
what most people are missing is that i am planning another ride on a comfortable, cross country trek; that involves me sitting on my saddle for sometimes 6 hours without a dismount. i want to listen to radio constantly during this timeframe, when it is my desire. there are such a variety of listening choices on Sirius/XM: that i may listen more than i used to.
i do not want to stop and hook up a battery and charge the iPhone. that's burning sunlight. i want to pedal along and play the radio, without draining the battery.
in response to wiring my own circuit- forgettabouttit. let me point out to those of whom are referring to the devices i am investigating, and are referring to them as toys: Motorola corporation introduced the unit being sold by PedalPower+. i am an individual more comfortable with other peoples' intelligence regarding their chosen fields, than my own simpleminded thumbing through life. although i do respect your abilities and comfort in sharing, you are ignoring the incompetent denominator- me.
in response to Questor, i have reexamined the Dahon biologic ReeCharge, with their patented technology, and i note the difference you correctly pointed out regarding 1600 milliamp whatevers. i believe i will be ordering the PedalPower+ from Australia.
as for the 'zener', thanks again. i think the zener is incorporated by Motorola, and this is how the buffering occurs. i read the zener is a voltage regulator, which can be achieved in a variety of methods. my question remains that, although the Dahon advertised being able to ride along and view the GPS app on the iPhone, their deficiency has been noted: and only experimentation will answer whether or not i will be draining the IPhone 3Gs battery, while streaming satellite radio.
you have helped me decide on getting a Schmidt hub, and the PedalPower+ system (which also has a solar attachment for down time). i will report back when i get it on the road. i am not well, so that may yet be awhile.