Charging voltage question

[DavidR8]

I just checked the voltage on my new battery while the BluCat was running.

At idle, the voltage was initially 13.4 then rose to 14.1. Didn't drop a bit with lights on high, grip heaters on max.

Oddly, when I increased the rpm, the voltage dropped down to 13.1.

That the rpm would drop at higher rpm doesn't make sense to my uninformed mind...is the drop a function of increased ignition draw?

[DavidR8]

According to this post on TriumphRat.net, it doesn't sound like it's an issue.

http://www.triumphrat.net/speed-triple-forum/104504-charging-system-diagnostics-rectifier-regulator-upgrade.html

[Bixxer Bob]

they all do that sir... 

[Chris Canning]

My old Reg/Rec did the longer you keeped the revs going the lower it went 

[lukeman]

This is because the original R/R isn't great at shedding the extra volts, its most efficient at lower rpms.  If you put a newer style mosfet R/R on your bike it will hold above 14 at any RPM and run cooler to boot.

[Chris Canning]

It's yes and no because I have a secondhand old style and fitted that and it did hold up voltage wise as opposed to my old one that didn't,the new one I fitted with the SS mod was even better.