Muzzy Fan Tip - MVAgusta.net
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post #1 of 33 (permalink) Old 12-14-2007, 08:11 AM Thread Starter
lee
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Muzzy Fan Tip

Installing Muzzy's on my fans. Going over the fan blades I find that all of the edges of the blades have burrs. Because the blades are curved they are to be considered airfoils, same as wings or propellers. The leading edge of an airfoil is critical in that any roughness whatsoever will cause the airflow to break away and create turbulence as it passes over the blade which then reduces it's efficiency. Witness Aircraft going in due to ice on the leading edge or just frost on the surface. This may seem to be nit picking and maybe it is but anything that can be done to increase the airflow through the radiator is worth it.

I lightly sanded all of the edges (leading, trailing and tips) to remove the burrs. Don't be heavy handed about it for if you take off too much there's the danger of imbalance. I also waxed the fans 'cause they appear to be raw Aluminum and that'll corode pretty quick if not protected.

I have no question that it will increase the CFM of the blades.

I also notice that the inlet for the upper rad is at the top left. The outlet is 1/2 way down on the right. The coolant moves horizontally from left to right through the tubes. Someone like to enlighten me as to how the coolant below the outlet gets to the outlet? Is the pressure/flow strong enough to flush it through the whole rad? Seems to me it'll just sit there and stagnate.

I got mine. Boy do I ever got mine.

Last edited by lee; 12-14-2007 at 02:06 PM. Reason: additional info
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post #2 of 33 (permalink) Old 12-14-2007, 09:31 AM
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Very good advice..

Cheers

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post #3 of 33 (permalink) Old 12-14-2007, 09:34 AM
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Thanks for the tips
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post #4 of 33 (permalink) Old 12-15-2007, 06:11 AM
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Yeah, thanks lee. I will give mine the same treatment before fitting.

SENNA 070/300
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post #5 of 33 (permalink) Old 12-15-2007, 06:20 AM
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What do u use to wax the fan ?
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post #6 of 33 (permalink) Old 12-15-2007, 07:18 AM Thread Starter
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I use whatever I happen to have around at the time. All I wanted to do was stave off oxidation for awhile as the wax won't last forever.

I got mine. Boy do I ever got mine.
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post #7 of 33 (permalink) Old 12-17-2007, 04:55 PM
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are people seeing good results with the muzzy fans?
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post #8 of 33 (permalink) Old 12-17-2007, 06:14 PM Thread Starter
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I haven't had the chance to use mine yet but as I recollect from posts on here it's a mixed bag. Muzzy claims an increase of 30% over the stock fan airflow which I believe after looking at the stockers.

I got mine. Boy do I ever got mine.
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post #9 of 33 (permalink) Old 12-17-2007, 06:28 PM
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Quote:
Originally Posted by RECON8541
are people seeing good results with the muzzy fans?
They help, maybe knock a degree or so off the temp, but they are not the holy grail of cooling, but there again being aluminium they won't melt like the originals

(This reply has not been checked for punctuation, grammar, or spelling mistakes and is devoid of any big long cleverwords or condescending manner)


MV's all gone now, still have a soft spot for MV's, waiting for MV to tick all my boxes again.
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post #10 of 33 (permalink) Old 12-18-2007, 01:57 AM
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Do the stock fans actually melt?
Just wondering if it has happend to anyone because I will have my bike soon and am wondering if I should spend the money on fans but for one deg.... don't know.
I am going to try the impeller though see if that does anything.
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