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Title: Anybody knows how much stock type 1 fan blows? Post by: jeff01 on September 27, 2011, 17:53:06 pm They should be different in 1300 and 1600 (maybe more)
But blowing flow can be measured somehow and maybe somebody knows some numbers ::) I´m planning to install 2 electric fans on my type4 I thaught that something like this: http://cgi.ebay.com/ebaymotors/2X-9-UNIVERSAL-12VOLT-1550-CFM-REVERSIBLE-RADIATOR-FAN-/110749083674?pt=Motors_Car_Truck_Parts_Accessories&fits=Year:2010&hash=item19c928e81a They are 1500cfm each is it enough or not? I would like to use it on street on summer when temp is +15 to +25c Title: Re: Anybody knows how much stock type 1 fan blows? Post by: Udo on September 27, 2011, 19:45:45 pm An electric fan can never make enough air for street use .
Those are for water coolers and would blow a low wind to the engine Udo Title: Re: Anybody knows how much stock type 1 fan blows? Post by: nicolas on September 29, 2011, 15:15:13 pm and with those temps, why waste money on something else if the stock setup will work fine?
Title: Re: Anybody knows how much stock type 1 fan blows? Post by: jeff01 on September 29, 2011, 17:13:11 pm Eny numbers? anybody?
With electric fan: It would be easier to install to Type 4 than stock type 1 cooler. It could be easily switched off for little extra power. It would let me to install torbo where I want. Title: Re: Anybody knows how much stock type 1 fan blows? Post by: deano on September 29, 2011, 17:15:43 pm Seems to me that the late Dog House fan spits about 300 cfm at speed, while a 911 deal is closer to 1000cfm. Sound about right? I believe Jake Raby did some serious testing on fans a few years back, as well as Gene Berg years ago (but not the 911 fan conversion)...
Title: Re: Anybody knows how much stock type 1 fan blows? Post by: didi on September 29, 2011, 20:46:17 pm jeff
fan power isn't defined only by flow. you have to compare the fan characteristic (flow vs pressure). i suppose your 1500cfm is a free flow value at zero back pressure. yes, flow characteristics from dog house vw and 911 fans would be very interessting! i think your plan for an electric cooling solution is a big challenge, but not impossible. have a look at http://www.rbernauer.de/php/content.php?action=content&id=101 didi Title: Re: Anybody knows how much stock type 1 fan blows? Post by: Andy Sykes on September 29, 2011, 21:39:43 pm heres mine untested yet
(http://i71.photobucket.com/albums/i149/gluemixer/c149bc5e.jpg) cheers andy Title: Re: Anybody knows how much stock type 1 fan blows? Post by: Type1/DVK on September 29, 2011, 23:00:31 pm found something: http://www.offroadvw.net/tech/wes/fan.html
Title: Re: Anybody knows how much stock type 1 fan blows? Post by: TexasTom on September 29, 2011, 23:56:23 pm Excellent information! Saves a lot of time and tedious calculations ... plus this is 'real' data.
So now you know! WE know. Personally, I think the advantage of the stock system may lie in the directional capabilities of the airflow; so much over the head(s) & so much over the cylinders (and that varies over its length). From that perspective & with the electric fans, you may have too much over the bottom of the cylinder and too little over the head (practically none at the center section of the fan as the motor is there). Basically uneven flow as necessitated by the design of the engine itself. The electric, radial fans may certainly work, but it seems the 'squirrel-cage' design fans are more reminiscent of the flow & directional characteristics of the original system. TxT Title: Re: Anybody knows how much stock type 1 fan blows? Post by: jeff01 on September 30, 2011, 05:58:31 am thanks for all replays......now I´ve reading materials for many hours ;D
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