scottad
i have both,da 50,mvvs 45, i flew both the same day same prop same slimline pitts, same fuel,
da ran 7300,mvvs 7250,with a mejzlik 22-8,mvvs has a lot less vibes and better throttle response,both start easy,da might have the edge with bigger props longer stroke,more cubes that kind of thing,if mvvs would come out with a true 50cc engine it would smoke the rest of the 50s out there also the da has around 15gals. thru it mvvs has 5
ENJOY!