prop survey

S

steplift20

God
to all steplift owners only, this is what i need
1# what size prop are you furnning
\2# what material, stainless steel aluminum?
3# what is your top speed
4# what is your rpm at top speed
i will start
13 1/4 19 s.s. 27 mph 5800
i think i could do better with a differant size prop so instead of buying them all i will ask my friends who are wellcraft owners to help me out
thanks
 
1989 Yamaha 175,       15 1/4 X 15   was runing a 14 1/4 X 17 till last week. Both Alum

Motor rated for 5500 rpm

with the 14 X 17 I could get 35 mph at 5100 rpm with 3 people 65 gal gas and gear.


with the 15 X 15 I get 30 mph 5500 rpm with same load


The new  prop gives faster plane and out the hole, better gas, and better performance all around, + it works the motor better cause it revs at the 5500 that it supose to.


The 17 pitch prop gave better speed on the top end but poor performance on the low end, faster troll, slower out the hole with prop spin, less gas milage and longer plane time

The 5 mph loss is no loss to me!!
 
My 05 Yammie 150 came with a 17" pitch. Im pulling 44Mph on my GPS at 5500 RPM WOT.  

That is with me alone and half a tank of fuel trimmed WAY up. I am debating going to a 15 pitch soon.

MJ how slow is that 15 going for you ?? I need to slow down not make my eyes water, fish bite at 1.7 MPH not 2.4

Aluminum,, all fisherman should be running aluminum IMHO
 
I am getting about 2. which should be pretty good for me. They like it here 2 to 3 mph and I was always over 3 before.
I will be doing wire line soon and will no better how its goes.
 
Fisherman should use aluminum props simply because you are going to find yourself in the rocks while fishing. An aluminum prop will take the damage as opposed to a stainless prop which will transmit the damage to the lower unit. The sacrifice made by the aluminum prop is much better than paying for a new lower unit.

completely IMHO of course,,, 8)
 
step,150 Johnson,15 1/4 x 15" pitch,cruise at 3850 at about 30 mph, WOT about 38-39 mph at 5100 rpm...oh yeah,aluminium.
 
so nobody is turning a 13 1/4 x 19 but me. reelapeeling are you sure your going 44 mph thats 20mph fasterer that me that seems like an awfull lot
is the bottom painted my is old paint and chipped so that would slow me down a little
 
How can I tell what prop I have? It's obviously stainless steel, but I see no markings to indicate diameter or pitch. I can measure the diameter but how would you determine the pitch?

rick
 
it should be stamped on there somewhere,try looking right in the hub itself or right next to the nut and washer that holds the prop on
 
Hey, Step...just saw your post...not 44, but 42mph on GPS...no bottom paint, but bottom paint's not slowin' you down THAT much...

Honda is 2004 and that 42 is trimmed ALL the way up, light load and flat water...WOT 6000rpms... ;) ;D...
 
hey reel thats moving\\
so what do you think
do you think i should go with a 15 1/4 x 17
i have a 13 1/4 x 19 and you know my specs
rpms about 5900 and top speed is 27mph
with 3 people[about240 185 165] plus 50 gallons of gas and takle total weight if i had to guess 1200 lbs
 
from the questions i've asked about props, 15 1/4x 15" or 17" should get you where you wanna be. I've learned, thru this forum, that for every change in pitch,you will loose or gain about 300 rpms, lower pitch, quicker outta the hole,loose a bit on the top end. Higher pitch, slower outta the hole but a bit more on the top end
 
Step, you asked if I think you should try a 15 1/4 x 17...yes, I do...I ran a 19 pitch and like you, felt I was leavin' a LOT of performance on the table...basicly, I ran every pitch from 15 to 19...might have even tried a 20, but 17 w/a large diameter was hands down the winner because it allowed motor to spin up to mfgr's max rpm, it allowed 30 mph cruise at an rpm level that's economical and outta the hole OK to suit me...you got same HP and virtually the same hull/ weight....I think it'll work for ya...if a Mercury Mirage in 15 1/2 x 17 is in your grasp, try it... ;) ;D...my dealer here has one, but they ain't cheap...yeow!...
 
hey reel thanx you saved me alot of trying differant props i will go with the 15 1/4x17 and let you know how it runs
you sound like you know what your talking about and again thanx
 
i just looked on the comp. and i counld get a 15 x17 aluminum prop or a 15 1/4 x17 s.s. prop whitch one do you have or recomend
 
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