Hi

Consider 7 bladed computer case fan (60-80mm) in diamter. Specifications read air movement of 30CFM (cubic feet per minute) with pressure of about 6-10mm H2O at 3000RPM.

Now attach said fan to model aircraft motor at 21000RPM = (?) 200CFM and 70mm pressure. Now attach 3 said fans together onto bottom of the airbox powered by the battery = 500-600CFM + over 200mm pressure (=about 1/3-1/2 PSI).

Extra air and pressure should be good for about 10-15kw

Total cost would be in the oreder of $300

idea from - http://www.electricsupercharger.com/

YES or

There are 2 things to consider here:

The PC fans are not designed to spin at 21k rpm and will most likely fall apart, as well as having 3 fans in sequence will probably produce less airflow than one fan as the turbulence from the 3 fans would cause too much air disruption and make the fans work less efficiently.

The second is the power draw to spin these motors. You will find that 3 motors spinning 3 fans will draw several amps of power thus robbing the engine of power it is meant to be producing.

In theory it has been done many times, but I have not seen or read about a practical worthwhile example.

I can't remember where I saw it, but auxilliary engines have been used successfully to drive superchargers for large capacity engines.

small two stroke motor used to drive blower for a V12 diesel....

developed huge torque gains.

Don't remember exact details, but recall I was pretty amazed by its specs.

Might have been a marine application??? where constant rpm is appropriate.

Electric superchargers have been tried..... general overall loss of power due to inefficiency.... require more power to drive the motor than the gain achieved with the boost provided.

Also, like Zap said, the PC fans will not cope with the loads at 21000rpm.

I also recall some brainwave was promoting smog pumps from early 70's anti pollution engines as a cheap way of adding a supercharger.

Once again, not too much gain due to insufficient air flow.

cheers

Sounds like an interseting project, maybe tougher componentry rerquired as the lads are giving your fans a clip over the ear. I reckon Geea could get one on his car by Friday night, pity he's working.

Scotty

mmmm but when the car is at idle it still sucks some air, so would it suck faster than a fan could blow at a resonable amount of RPM

And here I am wanting to install a supercharger, well there you go.

And here I am wanting to install a supercharger, well there you go.

No Wayne, there you go

Scotty

Hey guys I am new to this forum I have a ba n/a ute running pacies 4495 comp extractors, magnaflow cat into custom dual exhaust with quad tips. I have a custom air intake and I just wanted to know if anyone knows much about this force flow electric supercharger that says can gain upto 10% more power and save on fuel consumption?

cheers and go the n/a's

There an absolute

Im sure someone smarter than myself will be along shortly to explain why they dont work.

Something to do with the power required to pressurise an engine which is far greater than the power these pieces of sh1t emit.

haha mate IT'S AN ABSOLUTE WASTE OF TIME. Its the same as having a that fake BOV sh*t for n\a cars......but worse.

FYI www.sunamiturbo.com

Im pretty sure someone on the forum, or friends of theirs bought one, and it broke after driving his car 3 times, haha. And IMO It will probably do more damage, not being able to breathe correctly, etc.

Its a farkkkin plastic piece of sh*t mate, and for 300+ bucks I wouldnt waste a further thought on it, save your cash and put it towards something that will actually make difference.

Cheers