[Healeys] Fan

[Michael Oritt]

At one time I had a plastic flex fan on my 100.  Initially the car's
cooling ability seemed better but after a year or two i began to experience
more problems coping with heat, esp. in traffic.  I had already fit the
usual upgrades (new radiator, etc) and so I was a bit baffled.

Eventually I removed the fan and when I placed it on a flat surface I saw
that it had taken a concave set (when viewed from the front), I assume from
all the flexing--and no doubt this had degraded the fan's ability to pull
air through the rad.

I discarded the plastic fan and put on a metal flex fan.  To be sure it is
noisier but it does a much better job.

Best to all for 23015--Michael Oritt

On Wed, Dec 31, 2014 at 12:08 PM, Roger Grace <roggrace at telus.net> wrote:

> Steve,
> Thank you - you have good history and records.
> I think that my fan is different to the construction you describe ??; it
> has
> a one piece metal spider and each blade is riveted with 5 rivets to it for
> about 1/2 of the length of the blade.
> See enclosed pix. and hopefully is not the Moss/China one with all the
> problems. ?? The blade spacing is symmetrical so it is not the Texas cooler
> one.
>
> Your input appreciated.
>
> I am of the opinion that we really only need the help of a fan in slow
> traffic and particularly after the engine has been working (increased
> losses) after a run at some speed and the oil is really hot. Ideally I
> would
> like to remove it for quietness and to regain a few HP when cruising and
> replace with an electric one; however this seems to be a tight fiddly
> conversion ...
> Anyone with experience doing this...??
> rg
>
>
> -----Original Message----- From: BJ8Healeys
> Sent: Tuesday, December 30, 2014 1:37 PM
> To: healeys at autox.team.net
>
> Subject: Re: [Healeys] Fan
>
> Roger, at the root of the blades where they transition to the hub there are
> semi-circular cutouts.  The blades flex and the fatigue cracks start at
> those cutouts.  The first thing to notice would be paint flaking off in
> that
> area.
> Moss actually replaced my first 6-blade fan that failed with another one
> just like it.  I guess they got some other subsequent reports of failures
> and sent out a bulletin to remove the fans and return them.  When I removed
> the second fan, I saw the chips in the paint exactly where the first blades
> had failed.
> The history of the fans in my car was as follows.  Numbers in parentheses
> are the odometer readings at each time:
>
> 3 May 95  (31590)  Installed 6-blade metal fan
> 16 Jan 96 (34103)  Failed 2 blades, damaged radiator header tank, knocked
> fan guard loose and put a 2" gash in it (retained by radiator shroud).
> 5 Mar 96  (34105)  Installed replacement 6-blade metal fan
> 14 Feb 97 (35660)  Removed second fan and returned to Moss.  Noted fatigue
> cracks beginning in root of all blades (paint chips).
>
> As you can see, the fatigue cracks for the second fan were starting only
> 1500 miles after installation.
>
> Both fans were yellow 6-blade fans and I believe they were stamped "Made in
> China" (or perhaps it was on the box they came in).
>
> Steve Byers
> HBJ8L/36666
> BJ8 Registry
> AHCA Delegate at Large
> Havelock, NC USA
>
>
> -----Original Message-----
> From: Roger Grace [mailto:roggrace at telus.net]
> Sent: Tuesday, December 30, 2014 4:13 PM
> To: BJ8Healeys; healeys at autox.team.net
> Subject: Re: [Healeys] Fan
>
> I have a yellow, metal, 6 blade fan fitted to my car; origin and age
> unknown
> but suspect was fitted around 2004; just wondering if there are any tell
> tale signs to help identify it as one one the Moss/China culprits ??
> rg
>
>
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