Boat props . 3 blade stainless steel or 4 blade aluminum prop test run top speed and cruise speeds

[@tubular031]

Thanks for this video. I just got the same boat and mine has a 23p prop. With 4 of us on it, it takes a long time to get on plane. Almost feels like it will never get there. It flys once it gets out of the water. Seems like a 19p might be better for crusing with the family on board. That 17p you showed seems like it’s too low unless you are pulling stuff with a boat full of people and gear. Thanks for showing this!!

[@crapwessel]

Thank you so much for doing this video , i have a 1998 Baja 180 Islander , with that same 14 x21 stainless 3 blade , and i have been wanting to change it, I think im going to try a 19 pitch , but this is exactly the info i needed thank you !!

[@dsprojects8580]

Thanks for the view I am getting a few different stainless props and will be doing some testing again. Not sure when but I’ll let you know

[@darintraver4983]

I just bought the exact same boat !!! Lol it came with 22 pitch props (3and 4 blade ) I’m only hitting around 50 mph

[@65elcamino283]

I just got a 2005 bayliner 195. Nice video on the props. Bikes and boats. Sub'd. Cheers!

[@dsprojects8580]

Thanks 👍

[@darintraver4983]

Awesome video !!! Exactly what I needed to see .. I just bought a 18 ft baja islander with a 5 ltr carburetor .. it came with two props that are both 22 pitch .. a 3 blade and 4 blade .. now I’m concerned it’s a little high .. it does have bottom paint that’s not real slippery and I’m only hitting around 50 mph full throttle .. thanks for the great video

[@dsprojects8580]

Thanks for the view glad to be a help

[@michaelbajema4695]

FYI the 5.0 carbureted is 220 horsepower and the 5.0 mpi which he has is 260 horse power.

[@darintraver4983]

@@michaelbajema4695 ya that’s a big difference.. makes more sense .. thanks for the info .

[@gatgolf]

the tough spot or tight spot was because the rubber hub wasn't seated when you first started putting the 4 blade on.

[@violetsydney4942]

3-Blade Propellers Higher top speed: 3-blade propellers generally have a higher top speed than 4-blade propellers. Better acceleration: 3-blade propellers also have better acceleration than 4-blade propellers. Less drag: 3-blade propellers have less drag than 4-blade propellers, which can lead to improved fuel efficiency. More efficient at higher speeds: 3-blade propellers are more efficient at higher speeds than 4-blade propellers. 4-Blade Propellers Better handling: 4-blade propellers provide better handling and stability, especially at low speeds. More grip in the water: 4-blade propellers have more grip in the water than 3-blade propellers, which can be beneficial for boats that are used for towing or carrying heavy loads. More efficient at lower speeds: 4-blade propellers are more efficient at lower speeds than 3-blade propellers.

[@dsprojects8580]

Thanks for the info that could be true if I hade a stainless 4 blade to test but I wanted to do the test with cheaper four blade for people looking to up grade from a 3 to four blade maybe they only have the money for a aluminum and have a stainless 3 blade . As you seen my boat did way better with the 3 blade could vary a little from boat to boat my guess is the flex difference from aluminum to the stainless. Thanks again for the view the info for the people out looking to spend there money 💴

[@rickysmith2248]

You said your boat felt lighter with the 4 blade! That's because your having less friction with the boat touching the water that prop lifts the rear of the boat out of the water more than the other, it's more efficient in so many ways but it's what ever you like.

[@dsprojects8580]

Thanks for the info I wanna do some stainless prop testing next stainless vs stainless

[@dsprojects8580]

1:62

[@scottback3020]

You may want to repeat this test but use GPS to track your speed next time. Your Speedo seems to be off because the math doesn’t come out right. For you speed vs rpm vs gear ratio with a 21p prop. (Using a 1.61:1 ratio with a 305 merc) The only way a 21p prop could go 62 mph at that ratio and rpm is with 0% slip…which isn’t likely you’ll ever see. Marine 10-15% at best. Not criticizing, just trying to help you figure out what’s working better for your boat. I’d try a 19p mirage plus/Thunderbolt if it’ll fit an Alpha.

[@dsprojects8580]

Well it goes 62 with the 21 pitch will go faster with a 23 pitch that’s what it came with but the boat gets scary at that speed . And I thought about try a 19 pitch anyway thanks for your input

[@dsprojects8580]

It could be out couple mph I’ll gps it after summer is over and not as many boats on the lake . The boat gets little scary . And watching a gps again thanks for the info

[@dsprojects8580]

Just watched my video when I was doing 62mph I was was at 5200 rpm check you math not not trying to be rude just asking you seem to have it down pat 👍 would also like to know for my self not that I need to go that fast anyway lol most of the time we are going 20mph at 2800 rpm with a boat load .

[@dsprojects8580]

Maybe 25mph lol I can’t remember

[@scottback3020]

@@dsprojects8580 I’m assuming your ratio is a 1.61:1 with a 5.0 merc. If I’m wrong then we’d need to know what ratio you have. At 5200 rpm and 62 mph with a 21p prop and a 1.61 gear case that comes out to 3% slip. Some of the best props will slip at least 10% or more. A lot of cases up to 20% on the bad side. If the boat is getting scary to handle tho you speed is most likely hitting around 60. I only mentioned this stuff to you for more accurate data to go from so you know what is working best. Baja has a good hull design and can most likely achieve those speeds. Just not that common to see a 5.0 merc do that in most other hull designs.

[@nswiss19751]

Great video

[@dsprojects8580]

Thanks

[@TheSilversurfer12345]

Good review

[@atillaismail5411]

Great video Thank you

[@dsprojects8580]

Thanks you

[@dsprojects8580]

www.amsoil.ca/offers/pc/?zo=30213198

[@evanmiris5765]

I would probably go a Mercury Stainless Steel Spitfire X7 in the 19pitch.

[@dsprojects8580]

Thanks I’ll definitely check them out

[@leemccullough558]

Under 90alloyover stainless less flex 4blade holeshot and lose 2to four mph top end with 4blad now you need to start at what is recommended for your setup then you can experiment with diameter and pitch generally 2degrees either way a smaller prop willspin up faster a larger prop will take longer but hold better say 4blade stainless try a vented prop too with your setup it should work e.g hosepower o.e m props do work better mercury make some really good stuff ive compred oem and generic brands and mercury for mercury motors do have the edge regards from australia 😊😊😊

[@dsprojects8580]

Awesome thanks for the info 👍

[@larrywalden626]

Is your temp gauge working? It was low at 120. You’d thought running high rpm for a while it would heated up more than 120

[@dsprojects8580]

Good eye thanks for pointing that out I keep a close watch on it . It is a cold lake

[@michaelbajema4695]

Stock prop with the 202 was a 23 pitch.

[@dsprojects8580]

Do you know what type of 23 pitch prop it was ?

[@michaelbajema4695]

@@dsprojects8580 unfortunately not, found some original info about the boat that said 23 pitch aluminum was stock and stainless was an upgrade unfortunately didn’t say anything else.

[@dsprojects8580]

Awesome thanks for the info and the view Michael 🤙

[@michaelbajema4695]

After watching some videos of Baja outlaw 20’s the prop was most likely a laser 2 or mirage 23 pitch 3 blade. I put a 21 nemesis on my boat and the rpm went to high, waiting on a 23 pitch nemesis.

[@dsprojects8580]

Sweet thanks

[@huudacris]

What size motor are you running?

[@dsprojects8580]

5.0 mpi

[@eagle5720]

What kind of motor are you running?

[@dsprojects8580]

Just a little 5.0litre

[@pofphuquocisland4800]

how many horsepower and how many rpm is your machine.

[@dsprojects8580]

260 or 280 is what the 5.0 mpi is rated and revs aroun 5000 to 5200 went out and gps the boat speedo was 63 gps 58/59 .

[@davessparetime83]

Instead of the 17 pitch you need a 19 pitch for more people.

[@dsprojects8580]

I will watch for a 19 pitch

[@dsprojects8580]

I was going to do the 21 three blade to a 5blade 23 pitch summer came and went to fast this year

[@dsprojects8580]

Referral number required use 30213198 to set up a account www.amsoil.ca/p/amsoil-synthetic-marine-gear-lube-75w-90-agm/?zo=30213198