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Dec 12, 2013 8:18 pm
Dec 12, 2013 8:18 pm
Subject: Re: Water Pump Modification
On the Lagonda circa 1960s I don`t know how mutch room is
available front or rear of rad, but any modern electric fan
needs ducting. The problem with fans placed in front spill a large amount of cooling air out to the side, usually returning
through the fan. To the rear of the rad the fan sucks the air
from the sides instead of through the rad. I would think the
arrangement on the Lagonda is as the DB4/5/6. If you are
retaining the engine driven fan, I would look at a ducted front
fan, remember they pull a large amount of amps and therefore
require large cable. Power it by rad switch placed in the top
hose area, and a relay may be 2 in parallel. Startup amps
can be between 25/30 depending on motor and fan.
Ray
On the Lagonda circa 1960s I don`t know how mutch room is
available front or rear of rad, but any modern electric fan
needs ducting. The problem with fans placed in front spill a large amount of cooling air out to the side, usually returning
through the fan. To the rear of the rad the fan sucks the air
from the sides instead of through the rad. I would think the
arrangement on the Lagonda is as the DB4/5/6. If you are
retaining the engine driven fan, I would look at a ducted front
fan, remember they pull a large amount of amps and therefore
require large cable. Power it by rad switch placed in the top
hose area, and a relay may be 2 in parallel. Startup amps
can be between 25/30 depending on motor and fan.
Ray