Hi, John -
The unequal spacing of the blades makes the fan run quieter. The Texas Kooler
plastic fan also has unequal blade spacing. Although the blade spacing is
unequal, the fan is dynamically balanced.
I have had a metal fan blade break off due to fatigue, but I have never
experienced the fan mounting bolts backing out, and have never used a thread
locking compound on them.
Steve Byers
HBJ8L/36666
BJ8 Registry
Havelock, NC USA
----- Original Message -----
From: john lakie
To: healeys@autox.team.net
Sent: Thursday, July 28, 2005 4:15 PM
Subject: 6 blade fan?
Just in the process of doing some engine detail work
on my bj8 and removed the 6 blade fan for cleaning and
painting. I was quite surprised to find a rather
strange blade configuration. The spacing between the
blades is NOT even, as a matter of fact 2 pair
actually overlap one another slightly. Surely this
cannot be correct and must be the work of a previous
owner simply mounting 3 pairs of blades together?
This could not be balanced or efficient at engine
cooling?!? Wouldn't it be better to use just 2 pair
of blades under the circumstances?
Secondly, when I re-install the fan blades, should a
thread compound be used to insure the blades don't
loosen and become projectiles?
thanks in advance,
John Lakie
65 bj8 phase 1
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