1989-90 bayliner 2159 hardtop.

[66Holiday924]

That'll should make a difference!

 

[mickyryan]

well today she ran like a top 4200 rpm was only 19/20 mph but she planed around 15 prop i used today was a 16x12 pitch, so i think i should go back to 15.5x13 or maybe even a 15.5x14 just to see what difference would be , im wondering if my prop size is too big , like if i went down to a 14x16 pitch i wonder how that would effect the boat this prop stuff is perplexing because nothing seems to add up to the calculators .

 

[mickyryan]

coool part is 2nd weekend in a row i gone out 2 times this weekend

 

[chevymaher]

coool part is 2nd weekend in a row i gone out 2 times this weekend

And that is what it is all about congrats.

 

[kcassells]

lucky dog dog

 

[66Holiday924]

I've been trying to post but the website's been messed up. I used these prop calculators to select my prop. I haven't tested it yet though... so...


https://www.mercurymarine.com/en/us/propellers/selector/#!/step-one

http://www.mercuryracing.com/prop-slip-calculator/

 

[66Holiday924]

Nevermind! I just went through it again for fun and they changed it a lot. A year ago it was a way better prop wizard that gave you exact results, for how different props would affect your boat's performance.

 

[mickyryan]

yeah i am having a serious issue with prop selectors and pitch calculators because not one is correct for my real world tests so now im shy about what to go with , my thoughts are drop prop diameter and up pitch for example i was getting around 4200 rpm at 20 with a 15 /3/4x13 prop but when i went to a recommended 16x12 pitch i couldnt hit 20 and still had same rpm , so im thinking if i go down to 14 and go 17 or 19 maybe that would be better as maybe the 3.0 has a harder time spinning the big ole 16 " prop lol turning point recommends a 15x15 4 blade so not sure and mercruiser recommends as max speed a 14x19 and for economy a 16x12 .......

 

[kcassells]

Well here's the hard part Mick.
You'll prob. have to spend 2 days on the water testing all the props till you have the one that works best for ya. Bring some traps and rods. :joyous:

 

[AShipShow]

Despite my user name, props give me a headache. I feel like I need to spend a week of research everytime I start looking at them... it's wizardry I say!

 

[mickyryan]

well going off of turning points suggestion i will try their 15x15 4 blade,the boat originally came with a 16x16 3 blade lets see how it goes ....

 

[kcassells]

well going off of turning points suggestion i will try their 15x15 4 blade,the boat originally came with a 16x16 3 blade lets see how it goes ....

https://giphy.com/gifs/cheezburger-animation-Q8FSsSUMOdsk0

 

[mickyryan]

cold snap ugh 39 Degrees outside this mornin ....

 

[kcassells]

Feel for ya....Sunny and warm up here in Pa. :joyous:

 

[oldrem]

Temps rising here. Getting up to the mid 20's today. Should see mid to upper 30's starting Saturday. Almost shorts weather

 

[kcassells]

It's ELECTRIC!

 

[sphelps]

Hopefully you are borrowing these props to get the right one ...

 

[mickyryan]

picking them up dirt cheap but eh i will have a selection for folks who need to borrow them to do same

 

[mickyryan]

spoke to Phil at Turning point props , he thinks the 15x15 4 blade will be perfect so that's what i will try next
odd thing on timing i checked it today its set for 6, but at 1200 rpm it goes to 22 then at 3k its around 32 full in , seems like that 22 at 1200 would be kinda quick but engine sounds fine?

 

[Pusher]

I assume this is a 21 footer, but I don't remember the engine HP.