What propeller to use with CD-25 with 200HP In-line 4......?

Avidmagnum12

Avidmagnum12

Member
I’ve recently repowered my CD-25. The older motor was a 2011 200HPDI Yamaha. The propeller on this 2 stroke was a Yamaha painted SS 13 3/4” x 17”. Good motor that I put a lot of hours on but not particularly good at running at slow speeds. A local dealer offered me a decent trade in on a new 2017 200 inline4. I decided to stick with Yamaha as the controls did not have to be changed and service is near. I have five hours on the new power. Nice and quiet with a lot less smell. We put the same prop on that was on the old motor as the gearing is the same. I’ll be doing prop tests next time I’m out on the water. I generally run a very heavy boat.

So....for those that are using Yamaha 200hp 4 cylinder outboards, what propellers are you using? Results? Heavy or light boat? Top speed at maximum RPM with a neutral boat at what RPM?

Thanks for sharing your knowledge!
 
I have a 2016 Yamaha F200XB and run a Stainless Steel Aluminum part # OFS3R13PCL200.

I got 36 mph top speed at max rpm. I'm usually medium heavy.

I'm getting 3mpg at cruising speed (18-22 mph) and 3800-4000 rpm.

I've been very pleased.
 
Ken

Thanks for the information. That number is for a PowerTech SS propeller that is 15 1/4 inch x 13 inch. A 13” prop seems pretty flat but you are getting good performance. Can’t argue with success.
One more question.....what is your top RPM at WOT? They say the F200XB is proped best when your top Rpm at neutral trim is between 5800 and 6000 RPM.

Tom
 
Avidmagnum12":1m4albmb said:
Ken

Thanks for the information. That number is for a PowerTech SS propeller that is 15 1/4 inch x 13 inch. A 13” prop seems pretty flat but you are getting good performance. Can’t argue with success.
One more question.....what is your top RPM at WOT? They say the F200XB is proped best when your top Rpm at neutral trim is between 5800 and 6000 RPM.

Tom
Click to expand...

I think it was 5900 but it was last year when I checked it and I'm not at my Ship's Log or boat :cry so I can't be sure.
 
Ken
Your engine and mine are the same vintage. Hopefully someone else will have some other numbers but there are not too many 25’s with Yamaha F200XB power. There are others out there with Suzuki power (also great engines) but the gearing is different so a comparison would mean little.

My 200HPDI easily pulled the propeller I have but top RPM on that engine was 5500. It also had a permatrim that I really liked. I was told it would void my warranty on the new engine if I installed it. I’ll have to wait three years to put it on.

I’m going to keep your propeller number in mind if mine needs to have less pitch. Thanks again...hope to meet you someday. Hopefully you can make one of our CBGT’s on the St. John’s.

Tom
 
I’m going to keep your propeller number in mind if mine needs to have less pitch.
Click to expand...

In my experience, you are going to want that lower pitch!

I have a 2005 CD25 cruiser. I load it medium heavy (we like to cruise - typically 5 days, and 2 people). I installed a F200XB a couple of years ago. I spent a lot of time back then trying to get the propeller right.

Right now I have a S4x14.65x15R. At WOT, on flat water, with moderate load, I get 5200-5300 RPM. I want a 13" pitch stainless prop, but I've have trouble finding one. So far it has had to be custom made. Fred Young of Anita Marie has a 13" prop with his F200XB; so I had what was suppose to be an identical prop constructed, but it caused vibration and I returned it.

The 200 HP gives my boat plenty of speed with the 15" pitch (36 mph at WOT, and 26 mph at my favorite fast-speed RPM of 4100), and I want to trade some of that speed for more power (hole-shot and wave handling).

If you found a 13" pitch SS prop that worked on my boat, I'd trade-in my 15" pitch in a heart beat.
 
Thanks for your information.
I’ll try some propeller tests next week. I see that Yamaha sells 4 different propellers that have 13 inch pitch. The Turbo1, Reliance, Ultima 4 and the painted SS.

Who manufactured your prop? Is it Aluminum? I’d like to see more RPM at WOT.

More to think about....

I’ll post numbers soon.

Tom
 
I've tried to use that website in the past, but find it extremely frustrating to use. You have to enter your engine size, performance goals, and a bunch of other stuff before it will tell you what props are for sale.

I just want a list of all props, so I can choose. I can't find a way to make this website give me that list. Indeed, even if I answer all the questions, in about every combination I can think of, it never gives me anything less that a 15" pitch prop to look at.
 
Ok....try these settings.
Type boat...Express Cruiser
Outboard...200...F200...Single
Performance goal....load carrying
Performance goal recommendations....go to next step
Pitch and Rpm.......17pitch and 5250 rpm

You will then be given 6 props to choose from 2 with 14P and 4 with 13P

Happy Hunting...Tom
 
C-Otter propeller report. These numbers are with the same prop that I had on the 200HPDI 2 stroke. A painted Yamaha SS 13 3/4 x 17 pitch.
2000RPM. 7.5 mph. 4 mpg
4400RPM. 22. mph. 2,5 mpg
4500RPM. 25 mph. 2.5 mpg
4600RPM. 28 mph. 2.6 mpg
4800RPM. 30 mph. 2.7 mpg
5550RPM. 39 mph. 2.0 mpg. WOT

Conditions: very light chop, perfect conditions, fresh water, less than 100 above sea level on the St. John’s River, Florida. Full fuel 100 gal to start and full water packed for a two week trip with 9.9 kicker, big cooler and fishing gear. A normal load for us.

Observations: Slower out of the hole than the old 2 stroke but I expected that. A lot quieter at displacement RPMs and my wife liked the fact that the “stink“ as she puts it was gone. My Garmin fuel flow meter is inaccurate at less than 2 gph so no numbers for displacement speeds. My fuel flow at 25mph is a lot better than with the old engine. It was more like 1.6 mpg. It made me sick to look at it when I’d lead a group. So I would turn it off!

Basically the propeller seems to be doing well. I’d like to get a little more RPM at WOT so may look at a 13 or 14 pitch.

Any thoughts? Thanks Tom
 
Hi Tom!
No one else has said so, I will: The perfectly respectable WOT range for your motor, according to Yamaha, is 5000-6000RPM (same as my F150's). You admit you will always be running a 'heavy' loaded boat, so aim low, but over 5,000 (you're already better than that @ 5550rpm, in fact at the midrange of the motors 'ideal'). I think a lower pitch will just get you a lower WOT speed at the same MPG (maybe a tiny bit better low end 'grunt' getting on plane that you would not notice).
The cheapest Yamaha replacement props you're likely looking at run $500...spend that money on gas for the kicker, and how many more trips downriver would you guys get over your remaining lifetimes? Spend it there! You are so close to ideal you should be loving it!
If you absolutely MUST waste the estate on props you don't need (like I do), get SOLAS aluminum jobbers for under $105 including shipping from Iboat.com and experiment with them.
Yamaha lableled jewelry should be passed on.
Just Another County Heard From,
Cheers!
John
 
Hi John
Always appreciate your advise. I like to spend Joyce’s money on “shiny” things but I’ll play with the current one for now. I’ll need a flatter prop for Lake Powell in the future. It’s time to head north to cooler temperatures in Wisconsin and Michigan next week. Hope you are enjoying your retirement.

Tom
 
I was able to pick up a like new SS Mercury Turbo 14 1/4 x 13P today. We will see how well it works in the next couple weeks and I’ll post results.

It’s shiny!.......Tom :idea
 
Here’s the report on my new “shiny “ prop. It has lots more acceleration out of the hole and mid range. Here’s the numbers I came up with on a similar day as my first prop tests.

5000rpm. 2.1 mpg. 22.5 mph
5200rpm. 1.7 25
5600. 1.7. 29
5800. 1.6. 32
6000 WOT. 1.6. 34.5mph

Soooooooooo.. The old prop went back on. I’m going to keep this one as a spare and for operations at high altitudes. The 13 3/4 x 17 is much more efficient on the C-Otter fuel wise.

The big thing I miss is the permatrim that was on my old engine. The Yamaha dealer told me that it would void my warranty. In 3 years I’ll be drilling holes and installing it on this engine for sure!

Thanks all. .. Tom
 
Interesting.

Clearly you are getting far more MPG from the 17"P prop because that prop runs the boat at far higher MPH at the same RPM. I did a quick calculation to see how the engine does in terms of GPH.....about what I would expect; namely, more GPH with the higher pitched prop, but not much different from the lower pitched prop.

I wonder how much strain the engine is under pushing that 17"P prop thru the water at those higher RPMs. I can tell you one thing, when I had a 17"P SS prop on my CD25 with the 200HP 4-stroke, the engine seemed to be working very hard (with the 17"P, I got very similar MPH as you are getting with your 17"P).

Do you have the numbers for the 13"P prop at lower RPMs......such as 3500, 4000, or 4500??
 
As I’m learning there are a lot of factors involved in “proping” a boat. Props with the same diameter and pitch can perform differently. My boat does not have bottom paint, many 25’s do. My F-200 was installed with a wedge. The 17” on the C-Otter does not seem to be working to hard BUT ....I’m going to try a 15”P to see if better numbers are possible.

I do not have numbers at lower RPM’s with the 13P. I’ll play with it again in July when we go up to Lake Superior. Right now the boat is staying in the water at a marina. When we get to L’Anse we will put in daily and will play more with props.

I’ll post more numbers then......Tom
 
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