Suzuki ?

[striper56]

I finally got out to run the motor last nigh and to get accurate information. This is what I found with a half tank of fuel and one passenger with the 17 inch prop.
3500 rpm 20 knots
4000 rpm 25 knots
4500 rpm 31 knots
5000 rpm 34 knots
5750 rpm 39 knots
5900 rpm 38 knots

One thing I noticed when running the boat with a 2-3ft flowing swell, is the motor would go from 25knts to 21knts then back to 25knts after 30 to 60 seconds.

[kmoose]

Originally Posted by striper56

I finally got out to run the motor last nigh and to get accurate information. This is what I found with a half tank of fuel and one passenger with the 17 inch prop.
3500 rpm 20 knots
4000 rpm 25 knots
4500 rpm 31 knots
5000 rpm 34 knots
5750 rpm 39 knots
5900 rpm 38 knots

One thing I noticed when running the boat with a 2-3ft flowing swell, is the motor would go from 25knts to 21knts then back to 25knts after 30 to 60 seconds.

Motor is way too low.... we have all been through this on the Suzuki. Do you have the 250AP?

[striper56]

kmoose, I have the AP.
I have mentioned to the installer the info that I have received from other Seacraft owners with the same boat and motor. Before they raise the motor they want to try a 4 blade. They measured the distance from the bottom of the haul to the bottom of the AV plate which is one inch. Which is where they say it should be.

I appreciate your input.

Thanks

[Snookerd]

Originally Posted by striper56

Before they raise the motor they want to try a 4 blade. They measured the distance from the bottom of the haul to the bottom of the AV plate which is one inch. Which is where they say it should be.

I appreciate your input.

Thanks

You have a 25” notched transom, correct? I have the same motor (250/300ap 25”), same transom mount. Don’t mess with the props until you get the height correct. It is a waste of your time. As I said 3 weeks ago, raise the motor - all the way up. How many 23 Sceptres has your guy dialed in?? If your guy knows what he is doing, then he just doesn’t want to make the effort. My concern is that he doesn’t know what he is doing. You’ve got 6 people who know what they are talking about telling you to raise the motor. I had to do the same thing with my Suzuki 300AP and just like Flexpat told you tonight, I am also up at least 3 - 3.5 inches above the keel. Don’t let your guy keep leading you down the wrong path, tell him what you want, it’s your time and trouble. Do it. Good luck.

[kmoose]

Originally Posted by striper56

kmoose, I have the AP.
I have mentioned to the installer the info that I have received from other Seacraft owners with the same boat and motor. Before they raise the motor they want to try a 4 blade. They measured the distance from the bottom of the haul to the bottom of the AV plate which is one inch. Which is where they say it should be.

I appreciate your input.

Thanks

Sounds like they don't want to take the time to raise the motor. The AP motors have low water pick up for a reason. It would take them 15 minutes to do it, put an 18.5 on it and call it a day. I don't understand why the dealer is being so reluctant but you are being very patient with him.

[kmoose]

Originally Posted by striper56

I finally got out to run the motor last nigh and to get accurate information. This is what I found with a half tank of fuel and one passenger with the 17 inch prop.
3500 rpm 20 knots
4000 rpm 25 knots
4500 rpm 31 knots
5000 rpm 34 knots
5750 rpm 39 knots
5900 rpm 38 knots

One thing I noticed when running the boat with a 2-3ft flowing swell, is the motor would go from 25knts to 21knts then back to 25knts after 30 to 60 seconds.

I’m a little confused as in this post you are referencing knots. 38 knots at 5900 with a 250 on a boat with bottom paint is pretty close. Is it knots or statute?

[striper56]

kmoose,
My bad. Its statue.