[DeTomaso] Flex-a-lite question

[Charles Engles]

Dear Larry,


             I recall that you are on a first name basis with Mr.
Electricity.  Is it common for automotive 12V electric fan motors to get
"tired"?  Given the front location of the Meriah fans where they are more
exposed to the environment, do you expect decline over five or ten or
fifteen years?   


             Could the radiator have gotten "tired" with cooling tubes
contaminated and restricted by the nefarious schmutz?


                              Warmest regards,  Chuck Engles


PS: I am still running Meriahs, too.   They seem to be working OK, although
things were a bit warm during the heat storms of 2011 & 2012



-----Original Message-----
From: DeTomaso [mailto:detomaso-bounces at poca.com] On Behalf Of Larry Finch
Sent: Sunday, February 23, 2014 1:05 PM
To: detomaso at poca.com
Subject: [DeTomaso] Flex-a-lite question

All,

I've come to the conclusion the Hall Pantera Meriah fans are getting tired
and are not up to the task of slow traffic cooling.

I say this because in Summer/Winter I now always see a large jump in temp
when I get into city traffic versus highway travel. 20-30 degrees jump.
Wasn't always that way.

I would rather not remount the three-pass Quella/Ron Francis radiator for
sucker fans, so I'm looking at pushers.

Felx-a-lite offers model 440 as a pusher. 2500 cfm, S-blades, etc.

But I noted the online-available PDF installation sheet groups the 440
pusher and the 420 puller in the same section.

It instructs the 420 puller to be wired red/red and black/black, fan to
power source. And to reverse the wiring to red/black and black/red for the
440 pusher model. This tells me the fan blades are expected to perform
whether rotating CW or CCW. But I've always heard blades are optimal for one
direction only, and show reduced efficiency when rotating opposite to the
intended function.

I will try to talk with a Flex-a-lite tech about this on Monday, but in the
meantime I'm asking for any of your ideas, thoughts and suggestions.

Thanks,

Larry

......and no, I don't know why my emails (at least in the archives) are now
getting duplicated by the List software.