Question about parasitic loss with centrifugal sc
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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.
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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.
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.
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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.
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.
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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.
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.
Last edited by gasnmyveins; 11-05-2006 at 07:06 PM.
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Originally Posted by brad8266
Run an inline 6 cylinder with a blower. ![Driving](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_driving3.gif)
![Headbang](https://ls1tech.com/forums/images/smilies2/headbang.gif)
![Driving](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_driving3.gif)
![Headbang](https://ls1tech.com/forums/images/smilies2/headbang.gif)