HX35 8 blade or 7 blade?

[tinkertoy]

Which will flow better the older 8 blade or the 7 blade? Does anyone have any numbers?

 

[Scooter's Roofing]

I don't have any numbers, but my gut says the 7 blade flows more

 

[Cummins Driver]

From the reading I did when I ran my HX40, the 7 blade 56mm HX35 compressor flowed as good as my 8 blade 58mm compressor did. So, i would say the 7 blade is best probably.

Eric

 

[LReiff]

The 7 is lighter so it spools faster and it also flows a little more.