KR> Charging System

[Jim Morehead]

Netters,
 
I'm running a Revmaster engine in my KR.  I have a volt meter but no ammeter. 
When I run engine a 3000 RPMs it charges 16.5 volts. I don't want to boil the 
water out of my battery.  
 
Does anyone else using the Revmaster set up have any trouble with it.  If so 
what is your solution?
 
Thanks
 
Jim Morehead
N522PC