Sounds like I need to tweak the idle back up a little bit then. :)
So, just out of curiosity, given the same load requrements, would a
higher output alternator reduce this effect? I'm thinking with, say a 60
amp unit in place of the Lucas 34 amp unit, the same load would be a
smaller percentage of the total available output of the alternator, so
the drag on the motor would be less. Does it work that way?
-=Chris
<-----Original Message----->
From Robert E. Shlafer
Sent: 6/19/2004 10:16:01 AM
To: cbking@alum.rpi.edu
Cc: spridgets@autox.team.net
Subject: Re: Carb tuning
Heh, heh, Chis :):)
You are familiar with the term you never
get something for nothing? Sure!
Chuck C. says it all. The alternator is
driven by the engine...IOW, the alternator
is a "horsepower absorber". "Load" it with
lights, electric fan, electric fuel pump, etc.
and more horsepower is required to provide the "proper" charging rate
(which
includes that required to keep the battery
charged).
Add in a "hairy" cam and the "lower idle
effect" becomes more pronounced as
the "hairier" the cam, the less vacuum
it can produce in the "idle" and low
rpm range.
IOW, the "effect" will be more pronounced
with a Kent 286, than would be the case
with the more mild Kent 256 (or the stock
cam).
Cap'n. Bob
'60 :{)
.
|