SM4's windows' motor's relay* is unnecessary, wastes current, & can drain battery

Michael Pardee · Feb 22, 2005

dan martin said:

Just to be a difficult SOB that I am. <G> and throw a monkey into the
wrench, I have heard of some performance enthusiasts that switch off the
alternator from the battery. The theory is , if I recall ( doubtful at
times
at my age) that the mechanical load that the alternator puts on the engine
is significantly lessened if it isn;t producing electricity; conservation
of
energy and all that jazz.
So during a race, the overall voltageon the system would decrease
slightly,
maybe a volt or two, which, accoding to the original posters viewpoint.
should easily impact performance in a negative way, but alas, it doesn't.

Anyways, Carry on!

Cheers
Dan
Click to expand...

Now, that makes sense! Even a 30 amp load at 14V is 420W, more than half a
horsepower. Factor in the losses and the small reasons not to, and it is a
reasonable thing to do for a race. Of course, a 140 ma load from the window
relay is right at 2W, or about 1/370 of a horsepower.

Mike

Gordon McGrew · Feb 22, 2005

This does not make sense. Removing 138 ma of load when the engine is off
would be a big improvement, since that much drain would kill the battery in
a few days. But that drain when the engine is on is insignificant.
Click to expand...

Google Cheah pet's previous posts in this group. He has stated that
Hondas are defective because they have electric clocks which draw
current. A real looney.

Gordon McGrew · Feb 22, 2005

This does not make sense. Removing 138 ma of load when the engine is off
would be a big improvement, since that much drain would kill the battery in
a few days. But that drain when the engine is on is insignificant.
Click to expand...

Google Cheah pet's previous posts in this group. He has stated that
Hondas are defective because they have electric clocks which draw
current. A real looney.

Randolph · Feb 23, 2005

Google Cheah pet's previous posts in this group. He has stated that

Hondas are defective because they have electric clocks which draw
current. A real looney.
Click to expand...

I remember that thread. I believe one of the claims that time was that
because of that "defect" a Honda could not possibly cruise down the
highway at 60 mph. I say TE Cheah is a troll.

Randolph · Feb 23, 2005

Google Cheah pet's previous posts in this group. He has stated that

Hondas are defective because they have electric clocks which draw
current. A real looney.
Click to expand...

I remember that thread. I believe one of the claims that time was that
because of that "defect" a Honda could not possibly cruise down the
highway at 60 mph. I say TE Cheah is a troll.

SM4's windows' motor's relay* is unnecessary, wastes current, & can drain battery

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