Guests - If You want access to member only forums on HSO. You will gain access only when you Sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

  • RECEIVE THE GIFTS MEMBERS SHARE WITH YOU HERE...THEN...CREATE SOMETHING TO ENCHANT OTHERS THAT YOU WANT TO SHARE

    You know what we all love...

    When you enchant people, you fill them with delight and yourself in return. Have Fun!!!

Sign in to follow this  
Mugsaway

Correct prop

Recommended Posts

I have an '09 Suzuki 140 4 stroke. I recently squared up on a rock on Mille Lacs and had a new lower unit put on. The mechanic asked me at what my RPM's are at WOT. I told him I had now idea - still in the break in period. He asked how I thought the boat came out of the hole and I told him not as quick as I thought it should.

Sooooo, he told me he would put a pitch of 21 on instead of the 22. I went out today and noticed the boat was a little quicker out of the hole and at WOT I was at 6100 RPM's.

My question: Should the motor be at 6100 RPM's at WOT? The mechanic said the sweet spot is around 5850 RPM's (?). Do I need a different prop pitch? Or does this sound OK?

Thanks,

Mugs

Share this post


Link to post
Share on other sites

6100 is a bit high for that motor. If you are going to stay with that prop I would trim down a bit and try to keep it around 5800-5900. At 6100 were you trimmed out? Did you feel any walking at all ? Did you have any throttle left? What kind of prop is it? Just checked the Suzuki HSOforum and 6200 is the max for that motor. In fact the operating range is 5600-6200. So I guess if you want to run at the top it should be allright.

Share this post


Link to post
Share on other sites

At 6100 were you trimmed out? Yes

Did you feel any walking at all? No

Did you have any throttle left? No

What kind of prop is it? Brand, I don't know. It is aluminum

If I went to another pitch, would it run lower RPM's and still get the same speed out of it? 6100 is still in the operating range, however I don't know if I really want to be running that high. Will it eventually ruin the motor? At what speed would you run this motor at?

I appreciate the responses,

Share this post


Link to post
Share on other sites

One other question is load, Were you fully geared up, average weight in boat, or very light. If you were light, you will definatly be alright. If the operating range for the suzuki is 6200 rpm's, then you would be right in the sweet spot. Generally higher pitch equals more speed slower to plane out. What type of boat is it? That is also a big factor. If you start playing around trying to find the best performing prop you would be wasting your time messing with aluminum. Save some time and swith now to stainless. Also, your dealer should let you try every prop in the dealership as long as you buy one from them. My last boat I tried like six before I found the one that worked the best. My current boat works great with the prop that came on it. If it helps, I have a reata with a 175 suzuki being pushed by a 25 p rev 4 (I know a Merc prop on a suzuki?) with all of the pvs holes plugged.

Hope this helped.

Share this post


Link to post
Share on other sites

I just bought an '09 Suzuki and it tells you right in the owner's manual about correct operating ranges for the motor. I wouldn't worry about it running at the high end of the rpm range, as long as it stays within that range.

Share this post


Link to post
Share on other sites

I think you're just fine where you're at, and would prefer to run in the upper end of the RPM band, so you're in good shape.

marine_man

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  



  • Your Responses - Share & Have Fun :)

    • Good job!  I have never found any Blacks so they look a little different.  Can you take a picture of what they look like cut in half? They look a little scary like False Morel's 
    • I picked for about 2 hours this morning. I'm not exactly haw many I got but its enough for a couple meals. I'm going to chop some of these up and mix with some cream cheese, feta cheese and garlic chives and then stuff some chicken breasts and cook them on the grill. The little bit of rain that we got last week helped the shrooms pop but it really didn't do much else for the woods besides help the mosquito's hatch. There were so many they licked the bug spray off first then swarmed. I found the mushrooms all over, North, South, East and West facing hills. Normally spot 1 has the best results but this trip it was my second spot. All of them had pretty good size too. Only a few that were in direct sunlight were dried up otherwise they are very firm. Spot 1 is the left container. Don't worry, I use a mesh bag while I'm out in the woods!
    • Yup.... 6 & 4 for Lead.... 4 & 2 for steel
    • I ended up framing my house, putting on the T&G , and then spray foaming back against the interior, which may be why I am not seeing any movement... I also used pine vs cedar
    • I agree with the guy who agreed with the other guy.
    • Just wait till they come up with the remote submarine drone with 3d high resolution camera that can see through algae and milfoil and transmit to your eyewear in 3d.   I struggle with properly tying a berkley knot......
    • I agree with rundrave. #4 early and #2 shot later in year
    • Yes, 5/16 T&G I installed last fall. I did the same, but I see this summer it's starting to buckle  
    • Adding a 4th wouldn't do much IMO. The map screen is already too small to be useful when screen is split in 3. I added a Helix 7 G2N to use as a map screen. Networked with other 2 units
    • I could always go and spend more money on an additional unit but some of it is like Floyd said. I have a hard enough time watching one screen. I have the app on my phone. I think that lowrance has the ability to split the screen into 4. I just can't believe I'm the only person who would like to see this but maybe I am. It may not be as big a deal once I get more familiar with the unit. Right now I like to look at all the screens to help discern what it is im seeing on the screen.  I appreciate the input!