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





Island Flow = approx 600cfm

 

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.

 

I did not use those charts in my calcs as they are not as accurate of a comparision. About 20% less efficient as far as I know.

 

not sure i understand. it says mp112.

 

gen4 not gen5

 

ohh, a gen5 is diferent than a mp112? what do they put a gen5 on?

 

gen5 is the radix

 

i thought a mp112 is a radix. a m112 is the old style.

 

http://www.magnusonproducts.com/models.htm

 

The MP112 is the same, only the rotors have changed. The graphs on Magnusons site are taken from EATON on the M112 4th Gen. The current Model Magnuson MP112 has the 5th Generation rotor group with the APC (Abradeable Powder Coating)