Maybe a dumb question but...

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Done Swimmin

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I have often wondered if new electric, thin design, multi-blade cooling fans would force enough air into a carb or TB throat to boost HP/TQ?

A couple of those fans move a lot of air and if you could route the output into the induction system it is the same result as a superchaarger or turbo, isn't it?

Somebody school me in the physics if I am wrong.
 
Sorry but No.

I had a friend that put a Electric DC/AC Invertor in his car and installed a Sears Electric Leaf Blower on his intake pipe...It sounded stupid, it actually restricted the already anemic 305 Firebird above 2000 rpm...

Yeah waste of time.
 
However, if your 4cyl. needs some help, that Sears unit can do it!

There was even an electric supercharger being sold at one point. I never tust late night TV unless it's "SLAP CHOP!"
 
The biggest problem is that the fans are designed to move a large volume of air at a few ounces per square inch of pressure drop. Trying to cut that down to a smaller volume at higher pressure and the pressure would probably just escape through the gaps between the blades. It's simply the wrong tool for the job.
 
I have often wondered if new electric, thin design, multi-blade cooling fans would force enough air into a carb or TB throat to boost HP/TQ?

A couple of those fans move a lot of air and if you could route the output into the induction system it is the same result as a superchaarger or turbo, isn't it?

Somebody school me in the physics if I am wrong.
Sorry to respectfully disagree with Prine ....but I once put an electric leaf blower (120v a/c 600 cfm) on my 440 Charger (just for expiremental purposes only...drinkin' beers and havin' one of them Hmmm??? I wonder IF moments) with the following results . No measurable boost ...but "instant" throttle response . Perhaps if you could decrease the distance between the impeller and the scroll housing somehow you could possibly get some boost ? My best Bench Racer Guesstimate is that my leaf blower set-up was achieving 100% V.E. from idle to 6000 R.P.M. ?
 
However, if your 4cyl. needs some help, that Sears unit can do it!

There was even an electric supercharger being sold at one point. I never tust late night TV unless it's "SLAP CHOP!"


"you are gonna love my nuts!"
 
Sorry to respectfully disagree with Prine ....but I once put an electric leaf blower (120v a/c 600 cfm) on my 440 Charger (just for expiremental purposes only...drinkin' beers and havin' one of them Hmmm??? I wonder IF moments) with the following results . No measurable boost ...but "instant" throttle response . Perhaps if you could decrease the distance between the impeller and the scroll housing somehow you could possibly get some boost ? My best Bench Racer Guesstimate is that my leaf blower set-up was achieving 100% V.E. from idle to 6000 R.P.M. ?


I disagree with Prine all the time. Respectfully and no so respectful..... The thing about him is that he is usually right.

Even so, To Me, using a Leaf blower in any fasion other than intended, is nuttier than squirel sh.....uhh poop.

Unless that leaf blower is being used to piss off Prine. Which is a perfectly acceptable usage.....:)
 
"you are gonna love my nuts!"



ROTFLMAO!

my favorite commercial just for that line....I laugh every time it comes on,
 
I disagree with Prine all the time. Respectfully and no so respectful..... The thing about him is that he is usually right.

Even so, To Me, using a Leaf blower in any fasion other than intended, is nuttier than squirel sh.....uhh poop.
Now me on the other hand being the poor Hillbilly that I am
find beauty in taking something that is so cheap you could probably find one with a blown up 2 cycle for free
and put it to a use that it was never intended ! My initial experiment was with a 600cfm leaf blower ...my next move was going to use one of those backpack blowers (900cfm)
where the scroll housing could be seperated into two halves . Then sand or mill down the side that opposes the impeller enough to have it just about make contact with the blades ,then reassemble it...and see if then it could make any boost ?
My last experiment was on Pulse-jet engines.... I made a valved one with parts purchased from a hardware store for around 30 bucks . Even went so far as to run it on Acetylene for a three second burst ......Man that thing was AS LOUD as a TOP FUEL DRAGSTER ....until the valve let go !
Had to shut that experiment down early anyway .....The Cops would have shown up for sure looking for a Gattling Gun !!!
Unless that leaf blower is being used to piss off Prine. Which is a perfectly acceptable usage.....:)
The only time I might try to piss off Prine is if he happened to be a Liberal ....and we were over in News and Politics ? But if I remember correctly he's a Ron Paul Republican so we're probably on the same page !!!
 
I saw some punk kids on Youtube do this with a ricer 4 banger. But it was gas powered. And "appeared" to create a small amount of boost. Not to piss Prine off, but maybe an electric blower just aint got the cajones to push enough air. Of course an anemic Pontiac is only fast when thrown off a cliff.

Wish i'd have known about someone needing a 2 stroke junk leaf blower, i just tossed two of em 3 months ago.
 
An extremely high rpm electric ducted fan used on an rc plane may do the trick on a 4cyl or maybe on a 6 cyl if a pair was used.. I did some research on this avenue for supercharging. Of course the alternator rotating energy draw may mitigate the benifit. Some of those ducted fans turn about 50k and eat like 20 - 30 amps. I would wager that they would create at least a couple pounds of pressure at 500 cfm. So, a pair of them may be able to create a couple pounds boost at 1000 cfm. The problem is the extremely high end high volume high pressure ducted fans are super expensive as they are made of composites, with polished muffler bearings, and are a for fancy *** fake jet airplane rc planes. I would totally like to see a test using a pair of high end ducted fans on a slant six. Maybe one day when I have money to burn I will myself try such a cool and fairly pointless experiment. Heck yea
 
Now me on the other hand being the poor Hillbilly that I am
find beauty in taking something that is so cheap you could probably find one with a blown up 2 cycle for free
and put it to a use that it was never intended ! My initial experiment was with a 600cfm leaf blower ...my next move was going to use one of those backpack blowers (900cfm)
where the scroll housing could be seperated into two halves . Then sand or mill down the side that opposes the impeller enough to have it just about make contact with the blades ,then reassemble it...and see if then it could make any boost ?
My last experiment was on Pulse-jet engines.... I made a valved one with parts purchased from a hardware store for around 30 bucks . Even went so far as to run it on Acetylene for a three second burst ......Man that thing was AS LOUD as a TOP FUEL DRAGSTER ....until the valve let go !
Had to shut that experiment down early anyway .....The Cops would have shown up for sure looking for a Gattling Gun !!!
The only time I might try to piss off Prine is if he happened to be a Liberal ....and we were over in News and Politics ? But if I remember correctly he's a Ron Paul Republican so we're probably on the same page !!!

u got me lookin at pulse-jet engines lol. i am gonna try to build one just cuz i can lol. maby get it on a scooter sometime lol. if you have any places to learn how to build one let me know.
 
u got me lookin at pulse-jet engines lol. i am gonna try to build one just cuz i can lol. maby get it on a scooter sometime lol. if you have any places to learn how to build one let me know.
I use threaded Gas pipe sections to make the pulse-jets I mentioned earlier . As large as 2 inch pipe(inlet/outlet) approx. 5 feet in length down to small ones using 1/4 inch gas pipe .Both valved and non-valved types. Scale them similar in size to the ones you can find on youtube . Although the non-valved ones are much much more sensitive to design parameters (inlet/outlet and chamber dimensions) than the valved ones . The one I described earlier was a valved type ,the chamber was made with 2 inch diameter gas pipe ,the inlet/oulet were made with 3/4 inch gas pipe.The overall length was probably around 24 inches. If you want I can get you some pics . Not including the valve (Trade secret ) !! Try building one with threaded pipe as this allows you to alter the outlet length if needed.... and the valve....use your imagination ...if you can't come up with something on your own I will help you at a later time and give you more info . I'll tell you the same thing I tell my kids...I believe you'll learn more if you do some of the work/thinking on your own. Remember "keep it simple" ! DO NOT RUN THEM ON ACETYLENE use propane !!!
Now to get back on topic I may scrap the backpack blower plan and upgrade to one of these.

blowers.jpg
 
I saw some punk kids on Youtube do this with a ricer 4 banger. But it was gas powered. And "appeared" to create a small amount of boost. Not to piss Prine off, but maybe an electric blower just aint got the cajones to push enough air. Of course an anemic Pontiac is only fast when thrown off a cliff.

Wish i'd have known about someone needing a 2 stroke junk leaf blower, i just tossed two of em 3 months ago.
Whachoo talkin'bout Cooter ???

imagesCAKILNN1.jpg
 
This is just my guess, but i don't think the fan design would allow to to physically build any pressure.
With how far apart the blades are, I'm almost certain that any extra pressure would just slip past them. Cause it's not about how much air it can push, it needs to be able to to act as a one way barrier. It's always worth doing an experiment though :)

Just find someone with a plastic weld and build a housing in front of the fan, seal it off, and drill/thread a hole for a psi gauge.
 
You have given us a great idea to think about..............................................but you know we can't do this all day.
 
Sorry to respectfully disagree with Prine ....but I once put an electric leaf blower (120v a/c 600 cfm) on my 440 Charger (just for expiremental purposes only...drinkin' beers and havin' one of them Hmmm??? I wonder IF moments) with the following results . No measurable boost ...but "instant" throttle response . Perhaps if you could decrease the distance between the impeller and the scroll housing somehow you could possibly get some boost ? My best Bench Racer Guesstimate is that my leaf blower set-up was achieving 100% V.E. from idle to 6000 R.P.M. ?

One day at the shop, we had a small block Brand X motor strapped to a dyno and a big gas powered leaf blower handy, and a couple free hours. So we duct taped the blower to the intake and did a couple pulls. It made about 2 psi of boost all the way up to around 5,500 RPM. This wasn't a very hot smallblock, put maybe 200 hp to the wheels on a good day. One with better breathing probably wouldn't have had nearly as good results.
 
One day at the shop, we had a small block Brand X motor strapped to a dyno and a big gas powered leaf blower handy, and a couple free hours. So we duct taped the blower to the intake and did a couple pulls. It made about 2 psi of boost all the way up to around 5,500 RPM. This wasn't a very hot smallblock, put maybe 200 hp to the wheels on a good day. One with better breathing probably wouldn't have had nearly as good results.
Did you get horsepower numbers with and without the leaf blower ? Thats basically what I did on my Charger . (no dyno though)
My motor was a stock 440 with mildly ported heads and the mp 509 cam the only difference I noticed was definitely much more rapid throttle response.
That leads me to believe it is possible to make so sort of hp gains with a properly sized/engineered leaf blower ? (BIGGER)(900cfm+)
Again I think the key is getting the impeller blade/scoll clearance down to a minimum . (to make boost)
Also maybe some sort of electric clutch similar to an air conditioning compressor assembly to only activate the blower when needed to keep the plastic impeller cool when you're just cruising ?
 
It was something decent - I want to say it picked up 10 hp or so. I was quite surprised. It would probably have been less on a motor with better breathing. Scale it up, though, and you end up with something that's no longer a leaf blower, more like a centrifugal supercharger.
 
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