Dick,

Thanks for the up date on the weight of your engine, my Brillelli 366GT with pitts muffler weigh's 7 oz more than a DA-50 with pitts muffler. Aerobob has a web page so you can compare all of the 50cc size engines. Your Evo 45 is not listed, but I know he will be more than glad to add it because it is surely a 50 class engine. The page has weights&prices on just about all of the poplar engine in the 50cc class. It is a very good source to compare 50cc class engines.

Here is the web site if you would like to take a look see.

http://www.rcaerobats.net/GAS_ENGINE...ENGINE_WTS.htm