They recommend you drop 2 inches of pitch when changing from aluminum to stainless steel. But I ordered a new stainless steel propeller today. The aluminum was a 14 1/2” X 19 pitch. I was very worried about not dropping to a 14 1/2” X 17 pitch. I took a chance and order a 19 pitch. I heard you say at the end of your video that you easily could of switched from aluminum to stainless steel and keep the same pitch! Thanks!
You must check your sink anodes you get more corrosion on your stern drive, because of stainless steel prop, my Mercruiser 425 HO stainless steel for blades prop good performance
Helpful video. I just got a new 50hp suzuki 4 stroke replacing a Johnson 50hp 2 stroke with air leak issues. The johnson got up on plane with 2 people in the boat no problem but the suzuki struggles with two people. I have a hydrofoil on the back for both motors. It😩 made a difference on the Johnson but not sure if it's helping with the Suzuki. Any help you can offer? I haven't changed props but I'm thinking of trying a stainless prop to see if I get more lift. Let me know if you have any suggestions.
@@Michaelsbackyardmarina Prop is 11 & 1/2 by 15 Pitch. The Boat is a Logic/Triumph 15ft. The internet says the boat is 640 lbs. The suzuki motor I put on weighs slightly more than the Johnson by maybe 25lbs if i recall right. I am getting 30 mph with previous motor as well as the suzuki but just want to get up on plane with another person easier with the suzuki if possible. Let me know what you think sir. Keep up the good work.
Did you ever get it figured out? Have you tried raising or lowering your motor? Did you get the correct Suzuki 50? They sell a DF50A and a DF50AV and the AV is heavier and deeper geared for heavy boats. I just got a 50hp Suzuki (DF50A) on my 17’ aluminum duck hunting boat. And before I put a jack plate on I was running 37mph with a 11”X 16 pitch prop. Now when I put the jack plate (with 6” set back) I’m running a 11.4” x 15 pitch prop and getting 37-38mph on dead water and I only lose 1mph when I add a second person, and the boat gets on plane very quickly. The 16 pitch wouldn’t let me rev out enough, and with the 15 I can hit the revlimiter when im alone, and the 15 is getting me much better fuel economy.
Nice video, but I never use stainless. Buddy of mine used stainless, hit a rock and it tore up the foot gears. Aluminum would break off, so I always use aluminum and carry a spare.
I ran aluminum all last year (42 fishing trips) and all the encounters with objects were my fault and it was all low speed so stainless or aluminum would have made no difference. I will let the summer tell me how it goes. I plan on having a back up lower unit for my alpha 1 anyway.
I only run my i/o at wot at 10percent of the time I like having the alum prop when I go the the sandbars if I had a stainless prop I wouldn’t be going there 20 years ago when stainless started to get popular only offshore boats used them because they where more efficient and did have higher top end due to less flex I believe the most I read I talked about was. About 5-10 increase in speed I have one on my 15hp Johnson and goes 28 mph
very insightful video. i have a question. I have a 40hp Suzuki with a aluminum 14" pitch with a 11.5 diameter prop. im looking to switch to the Michigan Wheel Apollo stainless 14" pitch and 10-3/8 diameter prop. Basically the same prop except 7/8" smaller diameter. like you. im at 30mph. do you think in theory that i would gain in speed, if so, how much? thank you in advance
My math says you are giving up an 1 1/8" on the diameter. You should pick up at least 2 miles per hour if your motor can get to the same rpm it does with the aluminum prop.
@@Michaelsbackyardmarina i think your right. Thats what i figured also, from 30mph to 32mph, i hoping a little more. i also had a damaged skeg, it had been welded poorly, i knot of weld bead that im sure caused cavitation in the path of the prop. id be amazed if it all adds up to 34mph,lol. thank you for the feed back, i also subscribed to your channel.
@@brianmorrison9066 I got the prop last year, An Apollo 10.25 at 14" p stainless. I went from 27 or so to 34.2mph. i have the video on my channel. i also did some other upgrades as well. result were amazing, 3 tips for speed.
The stainless may be cupped ? You told not of the al. D.I.a. ? Hydro foils. Get rid of it? Possible some water. 200 lbs. In your flotation? You hit shit with the stainless. Lower unit gear strips?
you want a bit more top end speed then sharpen the skeg of the outdrive and the front of it... youl be surprised how much better the performance is with sharp entry points...
@@Michaelsbackyardmarina I know the feeling I'm running around in a 1986 grumman with a yamaha two stroke. Every year I think about selling it. I'd even get more than I paid for it. pretty mint for its age....I'd repower but motor still starts and begs to be ran every time.
@@Michaelsbackyardmarina SS prop is 2x the price (,give or take) of aluminum equivalent. you gain maybe 2 mph, 3 if you start changing pitch. Unless you race for money SS props are unnecessary upgrade. WORD.
They recommend you drop 2 inches of pitch when changing from aluminum to stainless steel. But I ordered a new stainless steel propeller today. The aluminum was a 14 1/2” X 19 pitch. I was very worried about not dropping to a 14 1/2” X 17 pitch. I took a chance and order a 19 pitch. I heard you say at the end of your video that you easily could of switched from aluminum to stainless steel and keep the same pitch! Thanks!
Let me know how much more top end you ended up with and did your RPM's drop any
You must check your sink anodes you get more corrosion on your stern drive, because of stainless steel prop, my Mercruiser 425 HO stainless steel for blades prop good performance
Helpful video. I just got a new 50hp suzuki 4 stroke replacing a Johnson 50hp 2 stroke with air leak issues. The johnson got up on plane with 2 people in the boat no problem but the suzuki struggles with two people. I have a hydrofoil on the back for both motors. It😩 made a difference on the Johnson but not sure if it's helping with the Suzuki. Any help you can offer? I haven't changed props but I'm thinking of trying a stainless prop to see if I get more lift. Let me know if you have any suggestions.
What is the pitch of your prop and what size boat and any idea on the weight of it.
@@Michaelsbackyardmarina Prop is 11 & 1/2 by 15 Pitch. The Boat is a Logic/Triumph 15ft. The internet says the boat is 640 lbs. The suzuki motor I put on weighs slightly more than the Johnson by maybe 25lbs if i recall right. I am getting 30 mph with previous motor as well as the suzuki but just want to get up on plane with another person easier with the suzuki if possible. Let me know what you think sir. Keep up the good work.
Did you ever get it figured out? Have you tried raising or lowering your motor? Did you get the correct Suzuki 50? They sell a DF50A and a DF50AV and the AV is heavier and deeper geared for heavy boats.
I just got a 50hp Suzuki (DF50A) on my 17’ aluminum duck hunting boat. And before I put a jack plate on I was running 37mph with a 11”X 16 pitch prop. Now when I put the jack plate (with 6” set back) I’m running a 11.4” x 15 pitch prop and getting 37-38mph on dead water and I only lose 1mph when I add a second person, and the boat gets on plane very quickly. The 16 pitch wouldn’t let me rev out enough, and with the 15 I can hit the revlimiter when im alone, and the 15 is getting me much better fuel economy.
Nice video, but I never use stainless. Buddy of mine used stainless, hit a rock and it tore up the foot gears. Aluminum would break off, so I always use aluminum and carry a spare.
I ran aluminum all last year (42 fishing trips) and all the encounters with objects were my fault and it was all low speed so stainless or aluminum would have made no difference. I will let the summer tell me how it goes. I plan on having a back up lower unit for my alpha 1 anyway.
I only run my i/o at wot at 10percent of the time I like having the alum prop when I go the the sandbars if I had a stainless prop I wouldn’t be going there 20 years ago when stainless started to get popular only offshore boats used them because they where more efficient and did have higher top end due to less flex I believe the most I read I talked about was. About 5-10 increase in speed
I have one on my 15hp Johnson and goes 28 mph
Avoiding the rocks works best for me
Сould you please briefly give the WOT rpm and speed obtained with one and the other propeller? As well as boat and motor models.
1976 Starcraft 18'
Mercruiser 120 hp
Stainless 17p prop WOT 3200 rpm
Aluminum 19 p prop WOT 2900 rpm
If you're looking for more speed a 40 hp motor won't do the job no matter what prop is installed
very insightful video. i have a question. I have a 40hp Suzuki with a aluminum 14" pitch with a 11.5 diameter prop. im looking to switch to the Michigan Wheel Apollo stainless 14" pitch and 10-3/8 diameter prop. Basically the same prop except 7/8" smaller diameter. like you. im at 30mph. do you think in theory that i would gain in speed, if so, how much? thank you in advance
My math says you are giving up an 1 1/8" on the diameter. You should pick up at least 2 miles per hour if your motor can get to the same rpm it does with the aluminum prop.
@@Michaelsbackyardmarina i think your right. Thats what i figured also, from 30mph to 32mph, i hoping a little more. i also had a damaged skeg, it had been welded poorly, i knot of weld bead that im sure caused cavitation in the path of the prop. id be amazed if it all adds up to 34mph,lol. thank you for the feed back, i also subscribed to your channel.
Your not going to get 4mph.
Maybe 2 mph.
@@brianmorrison9066 I got the prop last year, An Apollo 10.25 at 14" p stainless. I went from 27 or so to 34.2mph. i have the video on my channel. i also did some other upgrades as well. result were amazing, 3 tips for speed.
The stainless may be cupped ? You told not of the al. D.I.a. ? Hydro foils. Get rid of it? Possible some water. 200 lbs. In your flotation? You hit shit with the stainless. Lower unit gear strips?
don't hit stuff and the rest of the comment don't make sense to me. Thanks for watching
The prop throwing water at the hydro would never lift the boat.
yes it does and it keeps the ass end from digging as deelp
you want a bit more top end speed then sharpen the skeg of the outdrive and the front of it... youl be surprised how much better the performance is with sharp entry points...
Actually if you would have put a 13 pitch aluminum solas it would be a better support for your application
Nope, I like the stainless 19 pitch. I have put over 500 miles with this prop and it works perfectly
The stainless was 17 in.?
great video!
Glad you enjoyed it
Try it without the whale tail now
I will be doing that very thing after I install the new stern drive
Cool old boat but if u want better performance sell that tub for something more efficient
I like my tub
It has better electronics than most boat
@@Michaelsbackyardmarina I know the feeling I'm running around in a 1986 grumman with a yamaha two stroke. Every year I think about selling it. I'd even get more than I paid for it. pretty mint for its age....I'd repower but motor still starts and begs to be ran every time.
RMD Creations you have a nice tub. Enjoy as much as you can. Greetings from 🇻🇪
The material the prop is made of has no bearing on slip
Yes it does, aluminum flexes more than stainless. Research it and thanks for watching
stainless steel props are known for emptying out your wallets at about 100 dollars per 1 mph.
That was not my experience.
@@Michaelsbackyardmarina SS prop is 2x the price (,give or take) of aluminum equivalent. you gain maybe 2 mph, 3 if you start changing pitch. Unless you race for money SS props are unnecessary upgrade. WORD.
Stainless can be faster. And expensive. Not on this application. Then he added a hydro ?
An al.prop would gave similar performance. Cheaper. Lighter. Easy on gears as he is inclined to hit shit?