Country Dave
Well-known member
[url=https://www.tinboats.net/forum/viewtopic.php?p=323096#p323096 said:hudflat » Yesterday, 08:33[/url]"]I know your aways from running this boat but maybe something you will run into with yours. I only have a 50hp Honda 4 stroke w/15 pitch s/s prop but when I first took it out I was very disapointed how it couldnt accecerate without punching a hole through the water and over reving, no matter what i even I lowered the engine past the cavatation plate , tried a 17 pitch 3 blade, the answer for me was a 4 blade prop as these boats are so darn light. Now it pulls a holeshot like crazy and the cornering is excellent and it will run loaded trimed out 6000 rpms at 33mph.. yes I did lose 3mph using the 4 blade but im happy.
Maybe my issue was specific to my boat but with your 115 hp should be intresting on your results, maybe since your prop will be bigger you will be alright?
David
Prop selection is as critical as it is difficult. I’m a big fan of the 4 blade. It’s a big help when running jacked up. As the prop rotates up and one blade comes out of the water “on a 4 blade” another one is already in the water. Not the same result on a 3 blade, there is a gap because of the spacing. You wouldn’t think it makes that much of a difference but it does.
My first thought on yours was not so much pitch as diameter. Again it can be tricky but if you found the right combo you’re golden. I have more than enough ponies and I’m little stern heavy so I don’t think cavitation is going to be an issue. I have a few props to play with. I’m really not worried about top end. A good hole shot and if I can cruise around 45/50mph @ 4000 RBM I’ll be happy.