Found this on Volvo site- prop selection

[sharps45]

I've been looking for answers to prop size and pitch for high altitude (6000 ft and above) and found a chart on the Volvo page
http://www.volvo.com/NR/rdonlyres/2D2F5550-D247-4F3D-BE18-B8D3E71BEAA6/0/Prop_guide_2005_2006.pdf
or here
http://www.volvo.com/volvopenta/na/en-us/partsservice/marine+parts/prop_guide/

If I read it right is tells top speed at WOT for different sizes and pitches. Does anyone with more experience doubt these figures? Or am I reading them wrong? thanks

 

[whywhyzed]

Re: Found this on Volvo site- prop selection

If I read it right is tells top speed at WOT for different sizes and pitches. Does anyone with more experience doubt these figures? Or am I reading them wrong? thanks

What page of the .pdf document are you looking at?

 

[whywhyzed]

Re: Found this on Volvo site- prop selection

found it I think - Yeah - the charts look about right for the ratios and RPMs given.
For example, 1.61 ratio drive, 4400 rpm, 21P 40-43 mph
looks good to me
should this be in the prop forum, moderators?

 

[sharps45]

Re: Found this on Volvo site- prop selection

I posted it here following a suggestion from someone in the prop section. Hope I didn't step on any toes.