Mar 03, 2004, 06:01 PM Sven Goosen Sven Goosen Guest n/a Posts what does x * x mean for a prop? Hi all, I've never used a prop for models before, now i was looking on the site from my local RC store, and the size (i think) is indicated like this: 7 x 6 prop or 9 x 5 prop What do these values mean? i think it has something to do with lengt/angle of the blades? And how much thrust difference is there between a 3 bladed prop and a 2 bladed? Many thanks, Sven
 Mar 03, 2004, 06:01 PM Efulmer Efulmer Guest n/a Posts Re: what does x * x mean for a prop? Sven, The first number is the diameter/length and the second number is the pitch. As for 2 and 3 blade props it all depends on the pitch and diameter. Hopr this helps. Eddie Fulmer
 Mar 03, 2004, 06:01 PM Gerry Attric Gerry Attric Guest n/a Posts Re: what does x * x mean for a prop? The first number is the diameter the second the pitch which is the theoretical distance the prop would screw itself forward in one revolution (if the air didn't move as well) Ian "Sven Goosen" wrote in message news:104c2n6684amb79@corp.supernews.com... > Hi all, > > I've never used a prop for models before, now i was looking on the site from > my local RC store, and the size (i think) is indicated like this: > > 7 x 6 prop > or > 9 x 5 prop > > What do these values mean? i think it has something to do with lengt/angle > of the blades? > > And how much thrust difference is there between a 3 bladed prop and a 2 > bladed? > > Many thanks, > Sven > >