[frers-list]Prop Angle
Rod Stright
frers-list@lists.frers33.com
Sat, 27 Apr 2013 04:57:18 -0300
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Hi Bill,
I have a 17" Max prop on Equinox. I started out with 18 degrees and
increased it to 20 degrees as I could only get 4.5 kts at 2800 rpm. It
depends on your engine and the gear ratio of your transmission (marked on a
plate on the transmission). I would contact Fred as he is a wealth of
information and knows a lot about the maxprop. You will need the model
number of your engine as well as well as the transmission ratio. If your
gear ratio is the same as mine you likely need 2 degrees more pitch than I
do since your prop is smaller. The problem I encountered was that I had to
turn 3200 rpm to get close to 6 knots and the engine would overheat
quickly. With the 20 degree settings I get an easy 6 knots at 2700 rpms and
she backs up like a dream and doesn't overheat. The twenty degree angle
equals about 11.5 inches of pitch.
Fred Hutchison
12532 Beverly Park Rd.
Lynnwood, WA 98087
Tel: 425-355-3669
Fax: 425-355-3661
E-mail: hutch@pyiinc.com
Web: www.pyiinc.com
Regards
Rod
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size=3D2 color=3D"#0000cc" face=3DArial><span =
style=3D'font-size:11.0pt;font-family:"Arial","sans-serif";color:#0000CC'=
>Hi Bill,<o:p></o:p></span></font></p><p class=3DMsoNormal><font =
size=3D2 color=3D"#0000cc" face=3DArial><span =
style=3D'font-size:11.0pt;font-family:"Arial","sans-serif";color:#0000CC'=
><o:p> </o:p></span></font></p><p class=3DMsoNormal><font size=3D2 =
color=3D"#0000cc" face=3DArial><span =
style=3D'font-size:11.0pt;font-family:"Arial","sans-serif";color:#0000CC'=
>I have a 17" Max prop on Equinox. I started out with 18 =
degrees and increased it to 20 degrees as I could only get 4.5 kts at =
2800 rpm. It depends on your engine and the gear ratio of your =
transmission (marked on a plate on the transmission). I would =
contact Fred as he is a wealth of information and knows a lot about the =
maxprop. You will need the model number of your engine as well as =
well as the transmission ratio. If your gear ratio is the same as mine =
you likely need 2 degrees more pitch than I do since your prop is =
smaller. The problem I encountered was that I had to turn 3200 rpm =
to get close to 6 knots and the engine would overheat =
quickly. With the 20 degree settings I get an easy 6 knots at 2700 =
rpms and she backs up like a dream and doesn't overheat. The =
twenty degree angle equals about 11.5 inches of =
pitch.<o:p></o:p></span></font></p><p class=3DMsoPlainText><font =
size=3D2 color=3D"#0000cc" face=3DArial><span =
style=3D'font-size:11.0pt'>Fred Hutchison<o:p></o:p></span></font></p><p =
class=3DMsoPlainText><font size=3D2 color=3D"#0000cc" face=3DArial><span =
style=3D'font-size:11.0pt'>12532 Beverly Park =
Rd.<o:p></o:p></span></font></p><p class=3DMsoPlainText><font size=3D2 =
color=3D"#0000cc" face=3DArial><span =
style=3D'font-size:11.0pt'>Lynnwood, WA =
98087<o:p></o:p></span></font></p><p class=3DMsoPlainText><font size=3D2 =
color=3D"#0000cc" face=3DArial><span style=3D'font-size:11.0pt'>Tel: =
425-355-3669<o:p></o:p></span></font></p><p class=3DMsoPlainText><font =
size=3D2 color=3D"#0000cc" face=3DArial><span =
style=3D'font-size:11.0pt'>Fax: =
425-355-3661<o:p></o:p></span></font></p><p class=3DMsoPlainText><font =
size=3D2 color=3D"#0000cc" face=3DArial><span =
style=3D'font-size:11.0pt'>E-mail: <a =
href=3D"mailto:hutch@pyiinc.com">hutch@pyiinc.com</a><o:p></o:p></span></=
font></p><p class=3DMsoPlainText><font size=3D2 color=3D"#0000cc" =
face=3DArial><span style=3D'font-size:11.0pt'>Web: <a =
href=3D"http://www.pyiinc.com">www.pyiinc.com</a><o:p></o:p></span></font=
></p><p class=3DMsoNormal><font size=3D2 color=3D"#0000cc" =
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color=3D"#0000cc" face=3DArial><span =
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>Regards<o:p></o:p></span></font></p><p class=3DMsoNormal><font size=3D2 =
color=3D"#0000cc" face=3DArial><span =
style=3D'font-size:11.0pt;font-family:"Arial","sans-serif";color:#0000CC'=
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