Hey,
In trying to figure out what would be the best motor for me, I was doing some research on the ZDZ 50 vs. the ZDZ 60. RCShowcase http://www.rcshowcase.com/zdz60rv.htm shows the horsepower for the ZDZ 60 is 6.5. When I looked at the manufacuter's web page, http://zdz-modelmotor.cz/zdz/en/ they show the horsepower at 5.4. Be careful because some distributors show 6.5 and some show 5.4 hp. That's all that I need to determine the best bang for the buck. The ZDZ 50 is almost 3/4 of a pound lighter and has a quarter horsepower more.