Before spending your good American dollars, you should check out the Dynamax convertion being made available right here in the US. I can't post a link but you can easily find the information in the Large EDF section of the "other" RC Forum's Electric Jet section. Lee

btw it can be ordered in the widest performance range of any other 5" fan anywhere. From light weight low performance fan that you can assemble using your own fan, from 16lbs to 22lbs.........all of the way up to an amazing fan that produces well over 34lbs at peak and can be run at full power for over 2 minutes at a time without overheating the motor. No other 5" fan can do that at any price and it's available now as a plug and play system including including an ESC for an incredibly low price considering the performance.