Funny you say that, the plane I did my test on a segull 120 yak I ran the dle 30 with 19x8 prop revs 7450, I have now moved engine to a katana120
and have put my OS160 in the yak with 18x6 and 8550 revs, diffrents i found the dle300 had more low grunt and pull like no tomorrow with the yak
the os160 I would say performed 20% less IMO. now that is just my test other folks would find it diffrent i guess.

So my DLE30 runs a JXF 19x8 at 7450 and getting better each run.

regards awd