SailNet Community - View Single Post - Prop size for 4-107
View Single Post
Old 05-18-2013
SloopJonB's Avatar
SloopJonB SloopJonB is offline
Senior Moment Member
Join Date: Jun 2011
Location: West Vancouver B.C.
Posts: 11,322
Thanks: 59
Thanked 65 Times in 62 Posts
Rep Power: 4
SloopJonB will become famous soon enough
Re: Prop size for 4-107

Originally Posted by bobperry View Post
What you have now is what we call a "square prop" i.e. diameter and pitch the same and they seldom work well.
There's an interesting point. The same thing applies to engine bore & stroke ratios - when they are the same it is also called a "square" engine and it seldom works well either.

I understand that sail plans where the area is equally split between main & jib ("square"?) also don't generally work well.

Any math wizards here who can explain this curiosity?
I, myself, personally intend to continue being outspoken and opinionated, intolerant of all fanatics, fools and ignoramuses, deeply suspicious of all those who have "found the answer" and on my bad days, downright rude.
Reply With Quote Share with Facebook