ORIGINAL: CGRetired
Rock: I've never tried the three blade props. I've seen some people here on RCU (via pictures posted) using them but few at the field. The Pattern folks seem to use them a lot, but for some strange reason, they don't recommend them to those of us that are working our way up in experience levels.
I have a Goldberg Progege with the OS 75 AX engine and use the 14-6 prop I mentioned above and it seems to give me good, consistent performance with that 'unliminted vertical'
we all seem to strive. But it does climb vertically with out 'effort' with that prop. I just wonder how it will do with the three blade you recommend.
I may give that a try and see. Can't hurt, that's for sure.
CGr.
Can't hurt for sure, and will give you some excellent entertainment. And the best thing about a prop that didn't do good on the engine you thought it'd bring alive.......... To keep from having wasted the money on that prop, you NEED TO buy a new engine that uses it.
And then an airplane to suit that sucker. It's a never ending quest, but somebody's gotta do it.
What I found with my 75 was it performed very much the same with about 5 props. Most were 14x6's That 3 blade appeared to perform the same with just a bit of an edge. What was interesting was that other than the ground rpm (which really doesn't matter much for anything) the 3blade, with it's 8" pitch, performed very much like it was a 6" pitch. I really couldn't tell any difference in fuel consumption, to show how close the total performance was. I'm still using it because it was close to the best 2bladers, but was ahead. AND it's smaller diameter sprays less grass crud on the airplane. That airplane comes down with very little oil on it, and if I can keep the green stuff off, it's worth the price. And since the price included extra performance.......... win win
Hope it works as good for you. But remember my guarantee...........
If you are not entirely satisfied, there will be no additional charge.