electric cooling fan

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18 Oct 2008 23:24 - 18 Oct 2008 23:37 #242555 by PLUMMEN
electric cooling fan was created by PLUMMEN
im on a roll here tonight guys!:laugh: ive been tossing the idea of mounting a small 12v fan between backbone tubes in the area where coils normally sit to pull air over the top side of motor while idling,does anybody know of some kind of a small motor that would fit and still be able to handle the heat generated?everybody gave me hell about progress so here i go again!:laugh:
Still recovering,some days are better than others.
Last edit: 18 Oct 2008 23:37 by PLUMMEN.

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18 Oct 2008 23:45 - 18 Oct 2008 23:50 #242557 by Makarth
Replied by Makarth on topic electric cooling fan
they used to make computer fans up to 90mm that would move 120cfm and spun at roughly the speed of light. i thought about putting one on my oil cooler.:woohoo:


edit: called "tornadoes" and they are 12v
edit #2: around 80 decibels too
edit #3: www.google.com/product_url?q=http://cabl...gl=us&hl=en&sa=title
edit#4: mmmmmmmm edits yum
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1977 kz1000 - Megasquirt project @ 40% wiring, plenum, and exhaust<--(done!)
Last edit: 18 Oct 2008 23:50 by Makarth.

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18 Oct 2008 23:53 #242559 by PLUMMEN
Replied by PLUMMEN on topic electric cooling fan
that looks perfect,ill check measurements tomorrow!Thanks B)
Still recovering,some days are better than others.

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18 Oct 2008 23:58 #242562 by Makarth
Replied by Makarth on topic electric cooling fan
no prob, oh and be mindful of the blades i lost a nail on one :S it's what happens when you try changing comp parts with those blades running.
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1977 kz1000 - Megasquirt project @ 40% wiring, plenum, and exhaust<--(done!)

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19 Oct 2008 16:35 - 19 Oct 2008 16:37 #242702 by bountyhunter
Replied by bountyhunter on topic electric cooling fan
Makarth wrote:

no prob, oh and be mindful of the blades i lost a nail on one :S it's what happens when you try changing comp parts with those blades running.

Buy the small chrome fan guards that go in front of them. Worth the extra few bucks.:laugh:

BTW: those fans usually run on DC motors which have a solid state controller inside that regulates speed and limits current in case the fan is blocked (stalled). I don't think those controllers will like getting too hot?
1979 KZ-750 Twin
Last edit: 19 Oct 2008 16:37 by bountyhunter.

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19 Oct 2008 17:14 #242708 by Makarth
Replied by Makarth on topic electric cooling fan
no telling. i have a habit of making things just to see them ignite in a giant fireball or not. I think he'll be fine and if not he ruined a 11 dollar fan. Some of these fans can take a bit of heat.
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19 Oct 2008 21:15 #242745 by PLUMMEN
Replied by PLUMMEN on topic electric cooling fan
i want to mount it behind steering head gusset right above/front of cylinder head.;)
Still recovering,some days are better than others.

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19 Oct 2008 21:37 #242750 by bountyhunter
Replied by bountyhunter on topic electric cooling fan
PLUMMEN wrote:

i want to mount it behind steering head gusset right above/front of cylinder head.;)


By coincidence, I used to design cooling systems for electronic equipment.

I can't help but wonder if that small fan would actually do anything? In electronic systems, those fans are designed to deal with power dissipation of maybe ten or twenty Watts. A bike engine is probably dissipating thousands of Watts or more.
1979 KZ-750 Twin

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19 Oct 2008 21:39 #242751 by PLUMMEN
Replied by PLUMMEN on topic electric cooling fan
im trying to find something capable of pullng cooler air across topside of motor,any suggestions?;)
Still recovering,some days are better than others.

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19 Oct 2008 21:48 #242757 by Makarth
Replied by Makarth on topic electric cooling fan
hmmm you don't have a whole lot of spare power to be throwing into a cooling system other then using a fan off a water cooled bike. Would getting a small fan and using it on an external oil cooler be a better idea?
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19 Oct 2008 21:57 - 19 Oct 2008 22:14 #242760 by PLUMMEN
Replied by PLUMMEN on topic electric cooling fan
im open to all suggestions,i moved the chassis and motor to my new office right in front of my desk to make it much easier to visualize any ideas!:laugh:
Still recovering,some days are better than others.
Last edit: 19 Oct 2008 22:14 by PLUMMEN.

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19 Oct 2008 22:34 #242767 by Makarth
Replied by Makarth on topic electric cooling fan
maybe a temp controlled methanol injeciton? cools the engine internally and prevents preignition.
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1977 kz1000 - Megasquirt project @ 40% wiring, plenum, and exhaust<--(done!)

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