On the FD cars with the two front mounted oil coolers, may owners frequrently installed carbon fiber "screens" to protect the fins. Bugs, rocks, rain, snow, ice, and sand would bend them-in fact all of them I have seen out of cars are bent! The screen helps mightily. Don't know if it restricts air flow at all. I installed screening in my car, and it works without any temp difference in the oil (I have an oil temp gauge in the car). I did not consider using screens on the airplane because I thought there was no "debris" in the air. Maybe I ought to rethink this. I know there are big bugs down low!
Marc
>
> From: Tom <tomtugan@yahoo.com>
> Date: 2005/01/11 Tue AM 05:38:49 GMT
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Subject: [FlyRotary] Re: Flattened Fins (not Finn) / water
>
> John,
>
> Did you spray water into your plenum?     I found this: "Don't turn up the hose
> to full pressure--a concentrated blast of water can be actually bend the fins
> of the radiator."  here:
> http://www1.excite.com/home/info/learn2/tutorials_qa_overview/0,14899,auto_714_1,00.html
>
> Or fly thru rain since the last time you looked at these things??  Also, I
> wonder what path your hot-water overflow took.  Could it have gone into the
> plenum?    Skydivers standing outside on the step in light rain have told me it
> felt like they were being shot with BB's.  
>
> Tom
>
>
>
> --- Tom <tomtugan@yahoo.com> wrote:
>
> > 1) I too am more inclined to believe in crop-circle guys than air-molecules
> > bending these fins.     How thin and flexible are they?   And if overheated
> > motors can cause such I'd think it must be common knowledge in racing circles
> > or with radiator shops. Can you post a good pic?
> >
> > 2) Any chance of springing a leak by flexing these things around?
> >
> > Tom
> >
> > --- Mark R Steitle <mark.steitle@austin.utexas.edu> wrote:
> > > John,
> > > Could there be a hangar bum that doesn't like rotaries, and would like
> > > to see your effort fail, that could have sabotaged you?  Just a
> > > thought...
> > > Mark S.
> > >
> >
> >
> >
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