ORIGINAL: GeraldRosebery
ZDZ or DA? It's not really a fair comparison in 2009. Both are fine engines BUT the DA is state of the art and US supported by a fine group of guys out there in Arizona. Because the DA 50 is the predominant quality 50 cc engine out there, there is a huge user base on which to draw when you need information on set-up, props, gas mixtures, adjustments, etc. etc. Is there a flying field in the USA where there is no DA 50 used. Very few, I venture. The same is not true for the ZDZ. So everything else being equal, DA is the way to go if you want a quality engine.