SuzukiSavage.com - Ram air type cone filter

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Ram air type cone filter (Read 346 times)

verslagen1

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Re: Ram air type cone filter
Reply #15 - 02/06/14 at 10:42:37

Dave wrote on 02/06/14 at 06:28:10:

I just looked at the grainger catalog and a 12v blower with a 4" diameter wheel flows about 100 cfm at 2" of static pressure (boost). The little electric motor turns about 3,200 rpm. These blowers are made for ventilation. The 650cc (39.66 cu. in) Savage engine at 6,500 rpm flows 895 cubic feet per minute, and the atmospheric pressure pushing the air is around 14.7 psi.....which is equivalent to 384" of static pressure, or 192 times what the tiny electric blower can produce! The electric fan only flows enough air to keep up with the Savage engine at 726 rpm.....and even at that speed the fan is only allowing the air to pass through and not producing any boost.

While I agree that it's a waste of money... I'll point out a few facts.
A ventilation fan will be pushing against 14.7 psia and never a vacuum. So the cfm's will change. The intake flow pulses and the fan could act as a reflective surface to rebound the backpressure back down the pipe. But 2" of boost versus 384 natural... why bother. I might if I were tied in a drag race, not for cruising.

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Tempted YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 48	Re: Ram air type cone filter Reply #16 - 02/06/14 at 11:29:27 thumperclone wrote on 02/06/14 at 07:31:04: e-racing motor sports http://www.electricsupercharger.com/ Kidding or serious? You'd be better off carrying a bottle of compressed air under your seat and opening it up at WOT.
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diamond jim

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Re: Ram air type cone filter
Reply #17 - 08/27/15 at 11:10:39

Just stumbled on this thread. Airflow is so much more than filter performance. Currently building a prototype intake for a bike that includes many little things that all add up to better performance. Things like minimal distance to a wall from the inlets radii, some separation between turbulent filtered air and inlet air, surface contours to maximize volume and flow, bell-shaped housing design to create a pressure drop behind the filter as well as air expansion above the inlets, look decent and all within a small format. Some of you might be interested so just thought I'd share.

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JutMan Junior Member Offline SuzukiSavage.com Rocks! Posts: 96 Poconos Gender:	Re: Ram air type cone filter Reply #18 - 08/27/15 at 11:44:28 Dave wrote on 02/06/14 at 09:42:12: thumperclone wrote on 02/06/14 at 07:31:04: e-racing motor sports http://www.electricsupercharger.com/ That site has to be legit, it made a zoom noise when i launched it!
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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28761 L.A. California Gender:	Re: Ram air type cone filter Reply #19 - 08/27/15 at 11:50:36 All that and it looks happy
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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28761 L.A. California Gender:	Re: Ram air type cone filter Reply #20 - 08/27/15 at 12:58:22 A friend with a HD had put a larger air filter on his and was sucking up some road grime until he extended the air shield to cover it. And I got the same problem with my hammerhead air filters on the beast. I need to add some shields or live with half dirty air filters all the time.
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