roots maps

hello

could you tell me what speed means on the roots maps?

http://www.servimg.com/image_preview...=24&u=11660586http://www.servimg.com/image_preview.php?i=24&u=11660586

thanks best regards
eric

The "speed" on a supercharger efficiency map refers to the rotational speed of the supercharger. Basically, it's the supercharger's RPM.

hello

my question is:how many rpm do you think?

best regards

eric