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Don't know about a 5 blade, but a 4 blade prop changed the handling of my boat from totally unacceptable to perfect! With a 3-blade 14.5x17 Stilletto, it would not plane below about 20 mph and speed was unstable with a very sensitive throttle below about 25! With a 15.25 x17 Merc Mirage 3+ it was a little better at about 14-18 mph min planing speed but still not as good as with my old 300 lb motor on the transom. With the 4 blade prop it now has an awesome hole shot and is very stable with a very heavy loads at any speed from about 12 mph to WOT! You really need to try one to appreciate the difference. As I posted earlier, you're welcome to try any of my 4B props if you come to the Long Point gathering!
In my book, the extra $100 or so you'd spend for a 4B prop is a bargin for an improvement that totally changes the boat's handling characteristics! I think it's an additional expense that should be included when you're thinking about screwing up the CG of a 20 by adding a bracket with a heavy motor on it!
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'72 SeaFari/150E-Tec/Hermco Bracket, owned since 1975. http://i188.photobucket.com/albums/z...Part2019-1.jpg |
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