1990 Johnson 20hp prop test 11 pitch, 13 pitch, 15 pitch which is best for this outboard

We had some fun playing around with a few props
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Follow the links below for cool items used in this and other videos:
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Drive Shower: www.sterndrive.cc/product/Fit...
Skeg Guard www.sterndrive.cc/product/SEI...
Trim pump 1986 to present www.sterndrive.cc/product/Fit...
Trim pump assembly s/s www.sterndrive.cc/product/Fit...
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AMSOIL FULL SYNTHETIC Gear Oil 75W-90 1 Quart amzn.to/3xyjq3d
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Petrol Engine Cylinder Compression Tester Kit amzn.to/3iVme6C
marine grade wiring amzn.to/3qfOWAK
Super Clean 101723 1gal. Super Clean Degreaser amzn.to/3iSZp38
Electric starter
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CRANK N CHARGE Starter Solenoid Replacement For Johnson, OMC, Evinrude Outboard Motor
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Carb kits:
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Impeller:
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Johnson/Evinrude/OMC New OEM GASKET fuel pump
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Aluminum 3 Blade Propeller - RH, 10.5" Diameter x 11" Pitch x 14-Spline
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Aluminum 3-Blade Propeller - RH, 10.1" Diameter x 13" Pitch x 14-Spline:
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Aluminum 3-Blade Propeller - RH, 10" Diameter x 15" Pitch x 14-Spline:
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Video equipment used
Canon EOS M50 Mirrorless Vlogging Camera Kit with EF-M 15-45mm Lens, Black
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Comica BoomX-D D2 2.4G Wireless Lavalier Microphone System Digital 1-Trigger-2 Wireless Microphone Transmitter & Receiver SLR Clip-on Micro phone,Lav Mic for Smartphone Camera Podcast Interview
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email me at
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mail me at
RMD Creations
PO Box 387
Wellman, IA 52356

[@bayoucitybomber]

Thanks for the demo !!!! Excellent !!!!!!

[@VK2JIW]

Lovin your content. Simple easy to follow. Great information. from Syd Australia

[@Michaelsbackyardmarina]

Awesome, thank you!

[@krustysurfer]

Mahalo for sharing your observations and wisdom

[@Michaelsbackyardmarina]

you are welcome, thanks for watching

[@johnmccarthy7931]

Thanks for posting a video today.

[@Michaelsbackyardmarina]

You bet, thanks for watching

[@stevekamitsis1327]

Yes found it very useful.

[@russellg5849]

Thanks for posting this. I was thinking about changing the pitch on my Jon boat but now seeing that it doesn't change much ill just leave it be.

[@dirtybuzzard5977]

👍👍👍 Great video on Comparing pitches. I run the 13 pitch on my 25hp Johnson river boat. 👍👍👍As always Sir thanks for the ride along and Keep’em coming.

[@Michaelsbackyardmarina]

If I had to chose one it would be the 13 pitch especially if I had a third person in the boat. thanks for watching

[@ericpigg2689]

I have to know where that shirt came from! Looks like our old Mercruiser Tri Sonic that we had when I was a kid!

[@RN67POST]

Very cool information, really got to see the difference in props ! Often wondered how size reacts to a engine 😬👍

[@Michaelsbackyardmarina]

Thanks for watching!

[@larrybalowski946]

i got a 25 hp merc and i got it on a 20 foot pontoon and i just changed my prop from a 13 to a 11 because of weight i think the 11 would do better not sure winter time again dang nice videos you do thanks

[@Laserwurks]

My 1542 trapper topper with 1989 25hp evinrude and solas 11" 12 pitch hit 24.8 mph with two aboard 370 lbs of people and 100 lbs gas and battery. Plus anchor and tackle and open live well. Plenty of punch out of the hole.

[@DCTaylor281]

Thanks for the video. In my experience with these types of boats the single most important thing you can do for speed is get your setup as light as possible. I’m running an empty (except for required equipment) 14ft aluminum with a 1974 25hp Johnson, 9.3x11 solas prop and I’m 170lbs. I run it on the second trim hole from the bottom and run 29mph. Although I guess we have to take these speed apps with a grain of salt 🤷‍♂️

[@Michaelsbackyardmarina]

Thanks for sharing your information and thanks for watching

[@oldschoolriverrat]

I've always used 14 pitch props on the jon boats I've owned. Seemed to give the best all around performance. The only reason to me to go with a lower pitch is if the load is always going to be heavy (2-3 people, more gear, etc) in relation to the size of the boat. But if it's going to be most times a reasonably light load, use a 14. Then set the pin to the 2nd from bottom level and leave it there. If you go 3rd it'll cavitate more and bow-hop. Go to the 1st, it'll bow-dig and exhibit heavier steering. In theory, "all boats are different"...but my entire life I've owned 14 to 16 foot "Mississippi River fishing boats" and each one always seemed to perform best (or rather most consistently) with a 14.

[@Michaelsbackyardmarina]

thanks for watching

[@mikebennett9356]

You should use the lowest pitch that won’t allow you to go past max rpm, with one person, trimmed up. I ran a large service department at a marine dealership. We propped every boat that we worked on that way.

[@mikedurhan9941]

Great video, Michael. Yep, about 300rpm with every shift in pitch (2-degree). When you have your goatee grown out, your dark glasses on, a hawaiian shirt on, and your hair is blown up and back by the wind, you look like you ought to be bending a reed on an alto saxophone in a blues band about 11pm in St. Louis. Totally cool look, "Big Daddy"!

[@Michaelsbackyardmarina]

That's awesome, thanks for the comment and thanks for watching

[@timconklin8489]

Nice video good information. How was the gear oil? Did you guys get a chance to do any fishing? Thanks Tim

[@Michaelsbackyardmarina]

Still need to check the gear oil and I didn't do any fishing. Thanks for watching

[@davekapperman88]

What app are you using for you mph? Thankyou for you videos, I watch them all. I have an evinrude 1984 35 hp.

[@Michaelsbackyardmarina]

Just called "speedometer" in the apple app store

[@markkus1134]

Have you tried a 4 blade made a world of difference on my skiff

[@danielrobert7181]

Fun video for sure but the only way to optimize any prop selection is to monitor top RPMs against the engine's manufacturer specs. Proper prop selection is no science, it's an art !!! There are so many variables to consider (hull displacement, total wheight hauled, optimal transom height, etc), when you think you got smart, how about switching down to a 2 blades prop ... or moving up to a 4 blades and then how about a plastic, aluminum or stainless prop. Trust me, after fiddling with outboards for about 50 years, the number of alternatives are mind boggling ! Keep safe and be merry my dear sir !

[@Michaelsbackyardmarina]

you are so correct, thanks for watching

[@a6km]

I would try a 9 pitch or 10 pitch in yoir case

[@podgerogers8417]

What lake are you at??

[@froggerman44]

How high is the cavitation plate from the bottom of the boat?

[@Michaelsbackyardmarina]

about 1 inch below the bottom, thanks for watching

[@wish2fish37]

Thought max rpm is 5500 on these.?

[@Michaelsbackyardmarina]

it's a range from 4500 to 5500

[@boydlittou9446]

Run the 11 pitch in hot weather.

[@Michaelsbackyardmarina]

What's the reasoning behind that?

[@boydlittou9446]

@@Michaelsbackyardmarina In hot weather you loose some rpm On top end. Same goes for high humidity.

[@victorremick9721]

Your going to need a faster drone

[@Michaelsbackyardmarina]

LOL, eventually I will, thanks for watching

[@curtbrown9702]

Do a measured fuel burn on the 13, 15.

[@Michaelsbackyardmarina]

Not on this outboard this go round, thanks for watching