I knew you knew that about the heat Cindy, but thought I'd mention it for the benefit of the newbies.
The newbies will soon find out that crobbins is one wrench wench who's been there, done that and we have all learned from her! i.e. the restoration project... We have some amazing ladies on this forum.
I knew you knew I knew about the heat...
...and I may not be correct about the minimum rpms to derive enough output from the stator to keep the battery charged. But I was tihnking about this last night because it was warm, I noticed Jon L. seems to run his bike at higher rpms than I do, and then I got to thinking about the implications of that (lower rpms), which got me thinking about My Unfortunate Trip to Gettysburgh Bike Week last year when I blew my r/r. One of the things several folks noted (as I sat there in the Wal-Mart parking lot) was that while sitting in traffic, I hadn't kept my rpms up enough, which made a difficult stator situation worse. The problem - as I saw it - was that it was hot; and so I was thinking, "Keep the rpms down, it'll put less strain/heat on the engine block." But the low rpms, reportedly, only accelerated the rate at which my battery was discharging itself since the stator output was insufficient to recharge.
Sooooo, then I thought to myself this morning, "Self, let's ask the Forum members 'bout this", 'cause I heard a lot of things that day - some of which were useful, some of which were myth (such as, "You can find anything you need at Wal-Mart...they didn't have a battery for my 750).
So, actually, let me rephrase the question: Is it true that motorcycle charging systems such as ours (three-piece) do not work the same way as a generator/alternator set-up on a car, such that at lower rpms our steadily discharging batteries are not being replenished? Lurch will clearly never have a problem with his...