theoretical Radix flow capacities, number chart
#1
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So what does the Radix actually flow? During a conversation I had with Jerry Magnuson, he said the Radix(gen V) pump was good for over 1300cfm @ 20+k blower rpm(brpm). I have been trying to make heads AND tails out of this for a while now. Last night I used the Radix's sister as my muse(Harrop's M112). Why? it had the most relevent public data that I know of and is closely related.
Couple things of note;
my figures should be pretty darn accurate up to 2BAR/14000 brpm as that portion is strictly reverse calculated. From there I used the ratios from 1k-14k brpm to project figures out to 22k brpm, then used the difference of what JM stated was the Radix's limit to devise an efficiency slope with increasing variance as brpm went up, every 1k brpm.
That portion should be fairly accurate. From there I used my own knowledge(however limited) of GEN5 modified roots efficiency to guesstimate Island Flow. If there was a direction to take regarding averages I always chose the lesser value or the value that would err on the conservative side. Took me quite a while to process everything as I am certainly no math wiz but at least it was relatively fun and for a good cause........enjoy
![](http://img.photobucket.com/albums/v625/moregrip/theoreticalRadixflowcapacity.jpg)
Island Flow = approx 600cfm
Couple things of note;
my figures should be pretty darn accurate up to 2BAR/14000 brpm as that portion is strictly reverse calculated. From there I used the ratios from 1k-14k brpm to project figures out to 22k brpm, then used the difference of what JM stated was the Radix's limit to devise an efficiency slope with increasing variance as brpm went up, every 1k brpm.
That portion should be fairly accurate. From there I used my own knowledge(however limited) of GEN5 modified roots efficiency to guesstimate Island Flow. If there was a direction to take regarding averages I always chose the lesser value or the value that would err on the conservative side. Took me quite a while to process everything as I am certainly no math wiz but at least it was relatively fun and for a good cause........enjoy
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![](http://img.photobucket.com/albums/v625/moregrip/theoreticalRadixflowcapacity.jpg)
Island Flow = approx 600cfm
Last edited by moregrip; 05-09-2006 at 11:38 PM.
#2
single digit dreamer
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i am still looking at the data, here is some charts for the mp112 but brian once told me these charts were not acurate.
http://www.magnusonproducts.com/mp112.htm
i am looking at the inlet flow chart and it looks like around 1300cfm if you take it to 22,000rpm. no arguing that.
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http://www.magnusonproducts.com/mp112.htm
i am looking at the inlet flow chart and it looks like around 1300cfm if you take it to 22,000rpm. no arguing that.
#3
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Originally Posted by parish8
i am still looking at the data, here is some charts for the mp112 but brian once told me these charts were not acurate.
http://www.magnusonproducts.com/mp112.htm
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http://www.magnusonproducts.com/mp112.htm
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#9
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Originally Posted by parish8
i thought a mp112 is a radix. a m112 is the old style.