26 spline 4 blade
 

I searched all over for a 18x26 or 27 pitch 4 blade 26 spline prop,anyone have anything they want to sell!!! I tried the wanted section with no luck.I thought I would give this forum one last try.

I believe I have a pair of 3 blade 26 pitch Merc Mirage props. I will have to check my garage tomorrow. Would you be interested?
I went to 28 four blades after a power increase.

Thanks for the offer but I need speed master props,alot different from the bravo1 props.

Hey Frank, just food for thought. Im running IVs on my 38 Straight bottom Fountain. I will share some of my results.

17x29p Four blades. 5600RPM, 84mph. Very slow to plane.

17x28p Four blades, cup added at mercury. 5600RPM, 88MPH. Plane much better.

Also, I tried a set of 16.5x28 5 blades last year. Planed off perfect. No slip at all getting up. Problem at that time, wasnt making the HP, and couldnt turn them past 4700, so sold them.

Tried a couple other sets, and from what I have found, is there are so many inconsistancies with the old ssm props, there isnt much rhyme or reason. One set of props can slip like holy hell, and another identical stamped props can be fantastic.

One set of 4 blades I tried, would not get the boat on plane period. 5000RPM burnouts, nothing. Then bolted another set on, planed like a ski boat. I guess what Im getting at, is cupping is where its at with these props. If the blades cant hold water, they slip to all hell.

Compared a set of 17 1/8 diameter to a set of 16 7/8 diameter four blades, believe it or not the small diameter set planed worlds better. According to the prop scan on these two sets, the smaller diamter had cupping in the .070-.080 range, the larger diameter in the .030-050 range.

Not saying 18'' props wont help you, just sharing my experiance.

what height is your prop shaft at.I need the diameter to gat on plane anything less then 17 1/2 is no good,my drives are on box's where are yours?

No boxes, about 1.25" below the bottom.

I think that 18x28 should work for me,you are right,no rhyme or reason with these prop's just alot of trial&error.

for sale
 

I have 1 set of 4 blades, 17 1/4 x 27 I will double ck this weekand. Off arneson 7 setup, call me for price, neg! 717-554-9967

They would be to small for me thanks anyway,I believe the arneson has a 25 spline also,so I don't think they would work even if they were the right size!

What is your engine, drive setup?
 

Did you get anything to work yet? Just asking because prop selection is all over the place. Thanks