ORIGINAL: flyncajun
LOL David,
Not to say there is not room for Gas engines in pattern I think Matt has blazed the trail ,But the Standard is the 175. Turn a 20-10.5 in 95 deg weather and 100% humidity at 7500 rpm and then get a reliable pur idle at 1350 and you will see what I`m talking about.
However just when Gas is close, YS just adds displacement
Just trying to bring some reality in the conversation.
Bryan
True that....I have been measuring against the YS175 as my benchmark burning 20%-30% heli.....How about 95 degrees, 85% RH, 20 x 10.5 apc, 7850 rpm, but 1750 rpm idle. Premium gas, Bel Ray MC-1 Racing Synthetic oil at 1 part to 50. Of course we are talking sea level.....Close enough? The idle is the tuffy in small gasoline displacement. The 55 drops idle down nicely
BUT I prefer Avgas 100LL because it doesn't stink andstores finein the jug practically all season and the next (if it lasts that long). Top end rpm is down a little but so what? Power is there for anything we do; let's not forget my current ride is a little fat (like its owner), at 11# 5. I am not overstating the fact that the 33 is a wash against the 175 in a practical way. (we don't ever fly full bore so what's the point of even discussing their top end. )
Point is both have all the power needed and then some, for the draggiest airframe we could throw at them Bring on the tripes