Dangle_kt
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| posted on 18/11/07 at 04:34 PM |
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Radiator fan question
Hi,
Newbie question.
Just tried to figure out whether the radiator fan I have included in my part built is a sucker or a blower (*sniggers*)
pushed togther a couple off aa batteries and put the positive against one terminal of the fan and ran a wire round to the neg, it span one way, swap
polarity and it runs the other. Seeing as I wont be using the standard loom does that mean I can put it on the rear of the rad (which is where I want
it) and just connect the cabels to suit?
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BenB
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| posted on 18/11/07 at 04:41 PM |
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The blades will be curved to be most effective in one direction. Depending on the design of the fan running it backwards might burnt it out if you did
it for any length of time. You can normally tell whether it's a blower or a sucker by the design of the blades.
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Dangle_kt
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| posted on 18/11/07 at 04:47 PM |
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cheers - thought that might be the case. Fortunatly the leading edge (rounded leading to a pointed egde - like a plane wing) would suggest its a suck
I think
perfect 
thanks
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worX
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| posted on 18/11/07 at 05:01 PM |
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If you are at all unsure even now, just hold a piece of tissue In Front then Behind etc etc
Steve
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Macbeast
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| posted on 18/11/07 at 08:22 PM |
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There's often an arrow showing designed direction of rotation.
When I got mine, I held it on the workbench and connected 12V to it. It sucked up and shredded a pile of receipts 
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Steve @ sVc
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| posted on 21/11/07 at 05:13 PM |
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Look at the blades from the open face (rad side) of the fan. If the blade face is convex it is a rear mounted "Puller" fan. If
it's concave - you have a "blower" fan.
Reversing the direction of rotation will change it from a puller to a blower but you loose a huge amount of air flow so please don't try it.
regards
Steve @ sVc
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