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Posts: 422
| Hi,
Hopefully VMS will chime in or someone that has some knowledge or experience with this, but I have a Suzuki DF140 on an 1850 Fishhawk and three weeks ago when I had it out I got a nice 48mph out of it. I did however forget to look at what my RPMs were. Yesterday I had it out again, but this time we had a third guy, 80lb Terrova and the two xtra batteries. Seemed a little more sluggish and my top end was 41-42mph and my RPMs were around 5400. Max RPMs for that motor is 5800-6200. The prop I am running I believe is what was on there when the first owner purchased the boat. It is an aluminum 3X14X23. I would like to have a prop that will get me to my max rpm but will also provide good power and performance. The boat will also be used for family for tubing and that sort of thing. Any input would be appreciated.
Thanks,
Craig |
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Posts: 32959
Location: Rhinelander, Wisconsin | Suzuki offers a truly confusing array of props.
I'd look at a stainless of the same dimensions; that prop has to be close to correct from your description. Your light load RPMs should be measured with what you actually run as light load. If you fish by yourself and are near or at Max RPM's with your current prop, the stainless will be a better performing wheel and will do a little better job on a heavier load.
If you are going to be pulling slaloms or the like,you may want to consider owning two props. One for power and handling when pulling skiers, the other for performance while fishing. |
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Posts: 422
| Sworral,
Would a stainless of the same dimensions give me a little more power? Also, what would a stainless in a like 3X13.5X23 do for me? I can't find a stainless in a 14 diameter. I would like to get near my max RPM range so the motor isn't always lagging. My typical fishing load would be two or three guys and muskie gear or walleye gear, and family load would be wife and two little ones and pulling kids on a tube.
Thanks for the help and if anyone else can chime in with prop knowledge or experience with the same set up, feel free.
Craig |
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Posts: 3511
Location: Elk River, Minnesota | Hiya,
I believe Steve Worrall is gonna be close right on this one. If you got 48mph out of the rig with 2 people in it, I think you are going to be pretty close if you take the 2nd passenger out, but leave the TM and the batteries in.
Now...in terms of correct prop, I would not be so sure of going to the same dimension. If you change to stainless (which I would recommend for a motor of your size) you will see about a 200 RPM reduction due to less blade flexing in the water. A steel 23 pitch prop will truly run at 23 pitch whereas a 23 pitch aluminum will run more along the lines of 22 to 21 (both due to flexing and lack of cupping in many cases) I would think for fishing purposes the 13.5 x 23 would be pretty darn close to optimum, unless you can raise the motor on the transom. If you can raise the motor 2 bolt holes and get a somewhat aggressively cupped prop, you might be able to keep the 14 inch diameter. Many props of this size are also vented, which will help hole shot as well.
In your case where you will be pulling tubes, skiers, etc. I am wondering if a 21 pitch 4 blade prop would do well. You might lose a little bit on top end, but your hole shot would be instantaneous, and you could lift that motor up to the top hole on off the transom and still get great bite on the water (assuming good tip cupping)
Depending on how much you are fishing vs tubing, etc, the suggestion of 2 props might not be a bad way to go either. If it is about equal time doing both, I would suggest a good 4 blade for overall performance and handling.
Steve
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Posts: 309
Location: Elgin IL | I had a Johnson/Suzuki 140 for several years and ran a 14x20 SS Solas/Suzuki prop. Ranger 618 VS 1440 #s and ran 44MPH@ 6100 RPMS (GPS) If you live in Northern IL I have a 14x20 that needs some repair.Let me know Tim |
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Location: Des Moines IA | I have a 14X22 Stainless Suzuki prop ........ won't fit on my 70 ...... PM me if you're interested. Never been used. |
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Posts: 422
| Thanks for all of the info. I forgot to mention that the motor is in the third (middle) hole and will be used for fishing purposed more than the other. Do any of you know who I could contact regarding testing props in Southern WI.
Thanks,
Craig |
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Posts: 395
Location: NW WI | A fiend bought his new Suzuki from a dealer in the Lake Koshkonong area (don't remember the name of the place) and apparently the dealer was VERY GOOD about getting the right prop for his Ranger.
I'll second the SS 4 blade option....if a 4 blade is made for this motor and it's been proven to be a good option. |
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Posts: 76
| Craig
I ran a 1850 for a few years most of the time with a 150 2 stoke. I am a big guy and also a guide and have tried many different props to get the best out of the boat. The best performance that I got was with a 19 or 20 pitch 3 blade but I run the boats heavy. I have found that every boat is different even if the model is the same. When the load is on the lighter side a 20 or 21 pitch SS lifting prop gave the best mix of RPM and speed. Your 4 stroke my be a bit different but I would start with a 20 SS. I also have not found that a 4 blade was any better on the Crestliner.
If you are in S WI I would give Props Ahoy a call they can help you and know what they are doing. Tell them Tom from the Ironman sent you.
Also if you have any questions I have notes from about 15 different props that I have tried on 4 different 1850's you can give me a call. Tom 414-550-1379
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Posts: 32959
Location: Rhinelander, Wisconsin | Buy Mike's prop, it will turn on that rig, I bet. |
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Posts: 309
Location: Elgin IL | You need a 14x20 ....with a 22 you will not hit your max RPM and will be sluggish out of the Hole. |
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Posts: 267
| Just a question for my own education. Why does a stainless prop perform better than a "regular" stock prop? Does the stainless not flex as much? |
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Posts: 32959
Location: Rhinelander, Wisconsin | That's part of it, yes. It also is a better material to form and hold strength through the blade. Thinner and able to be darn near sharp at the edges is a good thing, so is holding it's shape despite tremendous torque. |
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