gasnmyveins

Wondering about something. How much horsepower does it take to drive the average small centrifugal sc that is capable of maybe 450 or 500 hp? Thanks.

its scot

iTrader: (1)

I was looking at driving one with an electric motor and the best I could find was with a paxton industrial blower air knife (you cand find them on the web)
aprox. 20 hp will make about 3.3 psi at about 900 cfm. I did some exp. on my owen and with a powerdine blower. riged and I do mean riged up with 3 electric motors 2 5hp 1 3hp I could spin it up to aprox 18k rpm and make about 6 psi. that was with the outlet choked down I have no idea obout the cfm.

gasnmyveins

Thanks, that's exactly what I'm thinking of doing, although probably in a much different application than you had in mind. I'm thinking of building my own frame and powering it with a small supercharged engine. Probably a 4 cylinder from a car, because of the easy availability of transaxles. Maybe a bike engine if I can find a way to connect it in a rear wheel drive configuration.
The reason I am thinking of driving it electrically is because I can vary the speed of the motor independently of the speed of the engine, which would give me the ability to have a fully customizable boost curve.
Now, once I figure out for sure which engine I'll be using, I'll just need to find out its air consumption rates so I can know how many cfm I'll need to reach a given power level, which will let me know what size motor I'll need.
Since it's custom, I guess I could modify a v6 blower with it's own mount. It might even be easier, since I could use the existing intake. I'd just rather have the efficiency of the centrifugal, since I'll be trying to make a high hp/liter ratio and don't really need to add anything that would detract from it's potential or reliability. It'll be near the ragged edge anyhow. Turbos are out, because I don't need boost coming on suddenly in a curve.

brad8266

iTrader: (23)

Run an inline 6 cylinder with a blower.

gasnmyveins

I just found this.

http://auto.indiatimes.com/articlesh...,prtpage-1.cms

To get to the part that applies here, you have to get past the pro-turbo theme of the article. Nothing wrong with that, it just doesn't relate to this thread. He gets into some math formulae that can answer quite a few questions. If you can force yourself to use them, that is.

gasnmyveins

If it can be had cheaply, I might be talked into a blown V6. I could save a lot of space that way, and it would come from the factory already set up for a blower. Maybe a few upgrades to get to my power goals..... I just wonder what they weigh. The whole idea of this is to keep the weight as low as I possibly can.