Octura X Vs Y Series Props?

[JimmyDuncan]

What's the difference between the Octura X&Y series props? Also does anyone know the rake angle of X,M,and Y series Octura props?

Thanks, Jimmy

 

[Jerry Dunlap]

What's the difference between the Octura X&Y series props? Also does anyone know the rake angle of X,M,and Y series Octura props?

Thanks, Jimmy

The Y Series has more pitch. Don't have a clue on rake angle.

JD

 

[shoboat]

Jimmy,

I will have to measure the rake angle or call Trudy at Octura.

Pretty sure they are around 10 degrees.

The Y-series are 1.5 pitch ratio propellers

So they will have 10% more pitch than a 1.4 series propeller (M-440)

The biggest difference between the X-series and M-Series is the blade area ratio

of the two different series. The M-Series has less blade area than the X-Series. Also

the X-Series has a lot more tongue of leading edge down lower on the blade than the

M-Series. Most of them all have too much cup on the leading edge for great RPM on

Most of our applications.

Keep Testing Different Set Ups,

Mark Sholund

 

[JimmyDuncan]

Thanks guys I've never noticed the Y series props until the other day on OSE. Just curious about them might get a few and try them on tunnels.

 

[Steve P]

I used the Y535/536? years ago on the old water cool K&B 3.5 outboards they worked great would not be enough prop for todays motors. I see a Y537/3 on the Octura prop chart.

 

[shoboat]

Jimmy,

My last sentence should read trailing edge cup is too much for our application.

Instead of the Y-series you may want to reduce the diameter on a M-445 instead.

Or revisit the X-442 with rounded tips and reduced to 38mm.

Thanks,

Mark Sholund

 

[shoboat]

Jimmy,

I will have to measure the rake angle or call Trudy at Octura.

Pretty sure they are around 10 degrees.

The Y-series are 1.5 pitch ratio propellers

So they will have 10% more pitch than a 1.4 series propeller (M-440)

The biggest difference between the X-series and M-Series is the blade area ratio

of the two different series. The M-Series has less blade area than the X-Series. Also

the X-Series has a lot more tongue of leading edge down lower on the blade than the

M-Series. Most of them all have too much cup on the trailing edge for great RPM on

most of our applications.

Keep Testing Different Set Ups,

Mark Sholund