Boat Propeller Explained | What is Pitch and Diameter?

Рет қаралды 66,338

Күн бұрын

Want to have a boat propeller explained? We have boaters ask us for a different pitch prop all the time. What is prop pitch and diameter, and can I just "swap" them out to get better performance? Likely not. In this video we will cover:
0:00 Intro
0:59 Propeller Basics
1:45 Propeller Diameter Explained
2:24 Propeller Pitch Explained
3:12 Prop Pitch in relation to engine RPM
5:58 Advice on changing your prop pitch
_________________________________________________
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Пікірлер: 46

@boatinglessons 2 жыл бұрын

Have you made a successful prop swap? Tell us what it was.

@adeletanner2262 Жыл бұрын

Even though I understood this "science" before reviewing it on youtube, I was just amazed at how poorly it was explained by so many of the so-called "experts." Your explanation was simple, correct, and easy to understand. Thank you!

@barrybebenek8691 2 жыл бұрын

Just an excellent video. I spent months investigating a prop for ours and STILL think I may have made a mistake. This is like a science. Keep’em comin’. 🇨🇦👍🏼

@boatinglessons 2 жыл бұрын

That is so kind of you to say Barry - thank you!

@mken4740 Жыл бұрын

We need a variable pitch prop. 5-6 degree swing is fine. Use the existing trim pump and rig up a ram inside the outdrive that could push on bottom side of prop and have a cam effect creating blade twist... Let’s go! I can’t believe we don’t have something by now.

@LDwiggs Жыл бұрын

By far the best boating channel on KZfaq.

@adambrakey6351 Жыл бұрын

Best video. Very clear! Appreciate it

@Sebastian-eg5iu 2 жыл бұрын

I really appreciate you guys breaking down the video into different sections. Even though I find myself watching the whole thing anyway, it's still nice to refer back to.

@Sebastian-eg5iu 2 жыл бұрын

Also, you guys reference a few separate videos on this video, but I'm having trouble finding them. Are they linked through annotations? Thanks.

@philhill184 2 жыл бұрын

Excellent explanation of pitch and diameter. Thank you!

@boatinglessons 2 жыл бұрын

Our pleasure Phil!

@MrKNOX2k Жыл бұрын

Great Video....couldn't be said better

@ozelot250 2 жыл бұрын

Another excellent video as always

@boatinglessons 2 жыл бұрын

We appreciate your kind comments:)

@garrylong66 Жыл бұрын

very helpful , thanks

@rickysiebert9618 Жыл бұрын

Would it be feasible to change a prop depending on the planned usage of a particular trip? For example, using a particular prop when planning an outing with 10 people on board versus 2 people traveling across the ocean to Bimini when higher top speed would be beneficial.

@ia6980 Жыл бұрын

Question please, if my propeller changed from 7.8x8 to 7.7x7 how would it affect thrust and speed? Will greatly appreciate

@royukuluk Жыл бұрын

I have a 18ft aluminum boat with yamaha 70hp, so what's the good propeller for my boat?

@tomdrummy4984 2 жыл бұрын

Interesting……thank you

@boatinglessons 2 жыл бұрын

Our pleasure Tom!

@bimber122 Жыл бұрын

Hi .I am the owner of a small 16 foot pontoon boat. Suzuki DF40 ATL 4 stroke engine I am asking for advice on the best size aluminum propeller for speed I should order ? thank you

@FishHeadsIV Жыл бұрын

Would it make sense to make a shroud to go around or behind the prop to see if Bernoulli's principle would help create more thrust? Like "air entrapment" but with a liquid.

@boatinglessons Жыл бұрын

This is essentially what a jet drive does? I think the extra drag may offset the benefit

@jaysonprigger9710 Жыл бұрын

I have a 88spl on a 20ft 2000lb boat. What is the best pitch for that

@muyege5019 Жыл бұрын

Would be better if you rotate the propeller correctly when explaining the pitch. :)

@kevinmaclean5880 Жыл бұрын

Thought i was crazy for a second

@h2oslider242 6 ай бұрын

I wasn't going to be that guy... But 😂

@7markshark Жыл бұрын

I need help. in 10 days I will get a pair of Suzukis DF 150 APX for my Center Console Brand: AS MARINE AS 26 GL about 7.8 meters (or 26 feet long) and 2,55 meters wide ( 8.3 feet), Weight wet with everything is 2600 KG or 5700 poung. This boat got have a bracket in the hull integrated. I need a setup for speed. Thanks for your recommend.

@BobEstler 2 жыл бұрын

Have you reviewed the Scharo props?

@boatinglessons 2 жыл бұрын

If you are referring to Sharrow, no we have not and really want to!

@russellwilliams2307 Жыл бұрын

I’m trying to figure out what’s the original prop size supposed to be on a 91 skeeter 200sx with a 90 Yamaha 200 can someone help with that one plz

@boatinglessons Жыл бұрын

That’s a tough one Russell. Boat companies are not the best at recording that data today, much less back in the 90s. Why is it important for you to know, or are you just curious?

@NipItInTheBud100 2 жыл бұрын

Is the black pontoon boat on this video a sweetwater?

@boatinglessons 2 жыл бұрын

Yes, a Sweetwater Premium. We used to be a dealer. The Godfrey brand is now Sunrise, Sweetwater, Monaco, AquaPatio, and SanPan

@NipItInTheBud100 2 жыл бұрын

@@boatinglessons did you stop being a dealer because you don’t like Godfrey boats or was it for another reason? Just getting the opinions of those in the know! I like the Sweetwater models but haven’t seen them in person to be able to judge them against other brands!

@boatinglessons 2 жыл бұрын

@@NipItInTheBud100 Godfrey makes a good boat and we sold them for about 10 years. We had the chance to align ourselves with what in our opinion are the two best brands in pontoons and went for it. Sweetwater are good, not perfect, and better than many others out there. The dealer can make or break the experience as much as the product too.

@NipItInTheBud100 2 жыл бұрын

@@boatinglessons Thanks!!

@NipItInTheBud100 2 жыл бұрын

@@boatinglessons Im jealous of you all in Canada! Your waterways are so beautiful up there. We go fishing just North of Red Lake, ON every year just because of how beautiful the scenery is! Thanks again for the great channel!!

@twlyons1 2 жыл бұрын

🌟🌟🌟🌟🌟

@boatinglessons 2 жыл бұрын

Thank you 😊

@howwedid-om2rs 6 ай бұрын

Some propellers joint is straight and some propellers joint is curved, why can you please define? The joints are connected to bull mouth

@boatinglessons 5 ай бұрын

That is a good question. I expect it is to reduce vibration and increase smooth operation by reducing turbulence as the blade slices through the water