It is common to have a metal fan blade from an A separate and cause damage,
I don't see why, over time and heat/cool cycles, the same thing couldn't
happen to a plastic fan.
Inspect fans often...I found a crack in my A fan a couple of years ago. I
keep it hung on the wall as a reminder to check it frequently.
Safety Fast!
Gordie Bird
62 MGA
>
> Paul,
> There may be some truth to that story of disintegrating fans.
> If the web of the fan is mounted behind the blades (toward engine, not
> toward radiator) any flexing the fan does as it screws itself forward in
> the airstream pulls the blade away from its reinforcement. I have heard
> from long-time owners that TD fans have come apart when the blades were
> installed backwards, though I haven't seen it myself.
> That said, it is difficult for me to understand how something with such
> an inefficient airfoil could develop enough pull to cause itself harm.
> But I do know that the blades are installed in the same manner as was
> done at Abingdon.
> Bob
>
>
> On Fri, 15 Aug 2003 09:25:27 +0100 "Telewest \(PH\)"
> <paul.hunt1@blueyonder.co.uk> writes:
> > An interesting point. If the complete assembly were designed for the
> > forces
> > to be in a specific direction then reversing those forces could
> > cause a
> > problem. But for something as agricultural as the metal fan I doubt
> > it.
> > Whilst the metal fan has been known to disintegrate, the plastic
> > hasn't
> > (unless someone knows better).
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