I have the Mikado but its still NIB, but I saw a video on here of a review and it is 2 Chuff Per Revolution on these. You must remember these are not top of the line and are more geared towards mid level enthusiasts who like to hear the chuffs which kinda disappear at high speeds if put at 3 to 4 per rev.
I tried ordering from Nassau but it says I cannot checkout and to contact the administrator. 
These look pretty cool to me!
