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Interesting !

Does the fan pull or push air ? As the fan is push air into the bilge it may be competing with Bournellis Principle. Meaning, laminar flow from the deck. Or, airflow from on top of the deck that may produce a low pressure area at the grill.

As the fan is to pull air, is it possible it will create restriction ? Perhaps, ILO or in addition to the grill a reverse blower scoop would scavenge/draw airflow from the bilge.

Quote:

Originally Posted by skaterdave (Post 3145499)

Knot, got question on vibration mount.

are they rated to hang a unit from them? i always thought they were supposed to have only downward load. the reason i ask is that i have Hardin Marine motor mount on BBCs and they mount the MSD boxes vertically. i've ran into problems when the isolation mounts broke. I've since increased the sized of the rubber mounts.

and in another boat I've been working on, I changed the spare MSD's to a flat mount so just in case so theres less of a chance of having the boxes break off and cause havoc.

it seems from your pictures your hanging the entire cooler and fan assembly.

Good question. I was very concerned with the amount of force
that the entire assembly would see. Considering they are directly
above the Turbine exhaust.
The mounts are rated for 150lbs each The picture is diseaving
they are about the size of one of those chocolate donuts you
get at the super mart.
I think you mean a shear load when you state "Downward load"

They are threw fastened with 3/8x 16 Stainless bolts.
I am more concerned with the plastic fan breaking off.

I got them at Mcmaster-carr.

Quote:

Originally Posted by CcanDo (Post 3145684)

Excellent suggestion and quite frankly is exactly what Gary at Fliudyne suggested when given the photo of this.

Some other variables to consider how much air is the main turbine fresh airscoops pulling in? Would the air stall before them. I have 6- 4 inch transom vents. is the engine bay under negative or positive pressure?

I have since made cardboard templates that I am giving to my sheet metal guy to create a small scoop. I cannot go to high with
this fearing it will constrict the main turbine fresh air scoops/inlets
that the grates are directly inline with.

Yes fan does pull. In a static test for 20 minutes measuring the
in and the out of the cooler with a infer red gun. in was 201F
out was 181F. T-stats were overridden and boat was on trailer.
I could not push the airflow from the fan where it is mounted
because it would draw the heat from exhaust at idle and no wakes.
Going to run some in water tests this week.

Quote:

Originally Posted by KNOT-RIGHT (Post 3145958)

Interesting ! A wind tunnel would be nice....The static trailer test may not consider the high pressure/low pressure areas created by deck and tunnel, at different speeds....Therefore, scavenging value is not known. Or, opportunity for decreasing/managing deck burble/lift. One test example (though crude), attach streamers to various points on the deck and hatches and go for a run....That may help with scoop design and location....Also, as a proponent of venturis, there may be opportunity for more of your creative thinking...Good Luck !

HEY, I heard it's your B=day. Miss ya , your pal, JJ=b=good. Sunday is do DAY !!!!!!!!!!!!!!!!!!

Happy B-day G hope block was a blast.
-Mike

Quote:

Originally Posted by KNOT-RIGHT (Post 3122435)

Here is the full rap around windshield installed
its wrapped with 16 gauge 316 brushed stainless
around the full perimeter. I was going to form the stainless
band myself bought the stainless and all. Thought of the guy
who made my stainless intakes he banged it out in less then two hours charged me 180. What was I thinking?
It is 3/4 inch thick and formed with cast acrylic.

It should make a world of difference in the entire cockpit.

http://inlinethumb63.webshots.com/45...600x600Q85.jpg

http://inlinethumb40.webshots.com/44...600x600Q85.jpg

You might give some thought to what THEJOKER said about the sharp edge of your windscreen. There must be something that can be put all the way around to soften that edge...

I really like the paint, the colors and the design. Beautiful boat! :thumbsup:

C,mon Keith Lets have Peter build us a new Carbon/ Kevlar
46 have Jim build some 703,s run some BPM,s Zeigart
shafts throw on some 5 axis props and go racing. KNOT-RIGHT

Sounds like a plan! :cheer:

Quote:

Originally Posted by Catmando (Post 3157395)

C,mon Keith Lets have Peter build us a new Carbon/ Kevlar
46 have Jim build some 703,s run some BPM,s Zeigart
shafts throw on some 5 axis props and go racing.

Sounds like a plan! :cheer:

And why would you not want to put Arnesons on it?

There is a 45 degree chamfer milled across the entire perimeter
in the earlier photos it is not visible.

These photos shows it a little better.
not bad advice on capping it with maybe a wide round molding.

http://inlinethumb57.webshots.com/46...600x600Q85.jpg

http://inlinethumb63.webshots.com/46...600x600Q85.jpg

http://inlinethumb25.webshots.com/44...600x600Q85.jpg