[Healeys] electrc fan vs. belt drive

[Bob Spidell]

Agreed (I did mention that the advantage of electric accessories is the ability to reduce or cut power to the motors as required). This would be a good use of the excess computing power available in our Healeys ;) 

My main point is that it takes the (essentially) the same power to drive the pump and/or fan, whether it comes from the engine directly or is converted to electricity by the alternator, and that from a strictly efficiency standpoint the conversion losses in the alternator and motors are not inconsequential. 

Of course, due to the reverse Coriolis Effect down under the power flows INTO the alternator from the motors, a HUGE advantage. 


Bob 


----- Original Message ----- 
From: "Patrick Quinn" <Patrick.Quinn at det.nsw.edu.au> 
To: "TERRY COLL" <coll44 at msn.com>, bspidell at comcast.net 
Cc: "austin healey" <healeys at autox.team.net> 
Sent: Thursday, February 5, 2009 3:05:00 PM GMT -08:00 US/Canada Pacific 
Subject: RE: [Healeys] electrc fan vs. belt drive 

G'day 

Of course while we have all been conjugating on the advantage of 
mechanical energy over electrical we have perhaps forgotten about what 
is the true advantage of using a computerised electric water pump and 
electric fan system. 

Once the temperature is set by the user it is then maintained through a 
more rapid (or slower) flow of coolant by the pump and cooling by the 
fan. 

Providing the engine/radiator are in good condition the engine reaches 
operating temperature more quickly and stays there, no matter the 
driving conditions. As the pump continues after the engine is shut down 
to the previously set temperature it also eliminates hotspot cavitation. 

Hoo Roo 

Patrick Quinn 
Sydney, Australia