23' Sylvan tri-toon Yamaha 200

You know the drill..

Moderators: Redneck_Randy, badmoonrising, lakerunner

Post Reply
Message
Author
Poorkchop
Posts: 1
Joined: Tue Jul 12, 2022 8:15 pm

23' Sylvan tri-toon Yamaha 200

#1 Post by Poorkchop » Tue May 30, 2023 11:07 am

I have a query regarding the maximum speed of my boat. It is a 23' Sylvan equipped with a Yamaha 200hp engine, yet I'm unable to achieve its full speed potential. Here are the specifics: with a Yamaha Reliance 15 pitch propeller, I can reach 22 mph at 5000 rpms and 27 mph at 6000 rpms with four people onboard. When I'm alone on calm waters, the boat reaches 25 mph at 5500 rpm and 29 mph at 6000 rpm. However, after switching to an 18 pitch propeller, I managed to reach 31 mph at 5800 rpms when operating alone. The motor is currently positioned in the second-from-the-bottom hole. Any recommendations or advice?
Attachments
IMG_9260.jpg
IMG_9260.jpg (969.12 KiB) Viewed 16662 times
IMG_9259.jpg
IMG_9259.jpg (897.84 KiB) Viewed 16662 times
IMG_9258.jpg
IMG_9258.jpg (659.42 KiB) Viewed 16662 times
IMG_9257.jpg
IMG_9257.jpg (848.78 KiB) Viewed 16662 times
IMG_9264.jpg
IMG_9264.jpg (1.01 MiB) Viewed 16662 times
IMG_9263.jpg
IMG_9263.jpg (1016.35 KiB) Viewed 16662 times
IMG_9261.jpg
IMG_9261.jpg (1.06 MiB) Viewed 16662 times

Steiner
Posts: 389
Joined: Thu Aug 01, 2019 7:51 am
Location: Lyman, SC

Re: 23' Sylvan tri-toon Yamaha 200

#2 Post by Steiner » Tue May 30, 2023 2:14 pm

Your motor looks to be a bit too low. I have an F200 on a 22' G3 Suncatcher which is a pretty heavy boat (5000lb with trailer and full tank so 3500lb or so with no one aboard) and it will hit 6000 RPM on the nose full throttle and right at 45mph with trim at the middle.

Sylvan used to make an RPT or something formed toon and I think those are kinda known for cracking. If yours happens to have those you may want to check them over good and make sure you're not carrying some water.


If you look at the bottom mounting bolt on the transom, the inward curve on the mounting bracket on mine would be right inline with the clean portion of the "scum line". Yamaha owns G3 so it's got their "power matched" prop setup which is the Reliance 14-1/2" x 15 pitch.

You can see the water line below. Your trim ram looks submerged whereas mine looks like it would be partway out of the water. I won't be back at the lake for a couple weeks so can't get better measurements until then.

Higher quality pic
https://photos.app.goo.gl/iXPdBbUjiG4XEha49

Image
2019 G3 SunCatcher V322 SS tritoon, Yamaha F200
2019 F-150 XLT SuperCrew FX4, 3.5L EcoBoost Max Trailer Tow Package

Horsepen
Posts: 42
Joined: Sat Mar 28, 2015 10:39 am

Re: 23' Sylvan tri-toon Yamaha 200

#3 Post by Horsepen » Tue May 30, 2023 2:51 pm

It looks to me like a good toon scrubbing might be in order. Take it to a beach and use a couple of those Scotch Brite pot cleaner things.

Steiner
Posts: 389
Joined: Thu Aug 01, 2019 7:51 am
Location: Lyman, SC

Re: 23' Sylvan tri-toon Yamaha 200

#4 Post by Steiner » Sat Jun 10, 2023 5:41 am

Sorry, I've been getting an SQL error the past several days when attempting to post. If I trim mine so the lower body panel seam (the one above the oil drain plug) is parallel to the water with no one on the boat and about 30 gallons of gas, that panel seam is about 2" above the water line.

Image
2019 G3 SunCatcher V322 SS tritoon, Yamaha F200
2019 F-150 XLT SuperCrew FX4, 3.5L EcoBoost Max Trailer Tow Package

User avatar
curtiscapk
Posts: 5393
Joined: Mon Nov 10, 2008 8:31 am
Location: OP KS\Hillsdale Lake

Re: 23' Sylvan tri-toon Yamaha 200

#5 Post by curtiscapk » Tue Jun 13, 2023 1:31 pm

Where is it at full throttle. The Cavitation plate should be running right at water level.
Craig and Paula
"THE FLOATER" rebuild Spring 2013
viewtopic.php?f=2&t=15328
94 Party Barge 24' 115 merc
Turning Point hustler 14 x 13 prop
22mph gps 3 people
12 F150
Overland Park Ks
Hillsdale Lake, KS

AU Nutt
Posts: 1
Joined: Sun Jun 11, 2023 11:10 am

Re: 23' Sylvan tri-toon Yamaha 200

#6 Post by AU Nutt » Mon Jun 19, 2023 3:16 pm

I am looking at buying a new Starcraft SLS3 or CX 3 both 24' models. My dealer has them with Yamaha SHO 200s (V6) and Mercury 200s. Rated for 300s. Does anyone have experience with these.

riplipper
Posts: 278
Joined: Tue Jul 17, 2018 8:00 am
Location: St Augustine, Florida

Re: 23' Sylvan tri-toon Yamaha 200

#7 Post by riplipper » Fri Jun 30, 2023 4:00 am

The Yam 200 SHO will push that boat just fine. So will the Merc.
However, if it is rated for 300, I would put a larger motor on it.
Nobody has EVER regretted having more HP.
The engine will work less, last longer, and resale, resale, resale.
SHO 250 could be an option.
I am the guy at the boat ramp that gives you dirty looks when you are a complete idiot and too stupid to know it.

User avatar
sunedog
Posts: 356
Joined: Thu Apr 13, 2006 4:48 am

Re: 23' Sylvan tri-toon Yamaha 200

#8 Post by sunedog » Thu Jul 06, 2023 9:12 am

Poorkchop wrote:
Tue May 30, 2023 11:07 am
I have a query regarding the maximum speed of my boat. It is a 23' Sylvan equipped with a Yamaha 200hp engine, yet I'm unable to achieve its full speed potential. Here are the specifics: with a Yamaha Reliance 15 pitch propeller, I can reach 22 mph at 5000 rpms and 27 mph at 6000 rpms with four people onboard. When I'm alone on calm waters, the boat reaches 25 mph at 5500 rpm and 29 mph at 6000 rpm. However, after switching to an 18 pitch propeller, I managed to reach 31 mph at 5800 rpms when operating alone. The motor is currently positioned in the second-from-the-bottom hole. Any recommendations or advice?
Definitely clean the toons. You can easily lose 10 MPH off the top end. Happened to me last summer (my first season with a relatively high horsepower tritoon). Your second to last picture shows a lot of growth on the toon.

User avatar
Rick McC.
Posts: 417
Joined: Fri Mar 31, 2017 7:12 pm
Location: Weeki Wachee, Fl

Re: 23' Sylvan tri-toon Yamaha 200

#9 Post by Rick McC. » Sat Jul 08, 2023 11:41 am

sunedog wrote:
Thu Jul 06, 2023 9:12 am
Poorkchop wrote:
Tue May 30, 2023 11:07 am
I have a query regarding the maximum speed of my boat. It is a 23' Sylvan equipped with a Yamaha 200hp engine, yet I'm unable to achieve its full speed potential. Here are the specifics: with a Yamaha Reliance 15 pitch propeller, I can reach 22 mph at 5000 rpms and 27 mph at 6000 rpms with four people onboard. When I'm alone on calm waters, the boat reaches 25 mph at 5500 rpm and 29 mph at 6000 rpm. However, after switching to an 18 pitch propeller, I managed to reach 31 mph at 5800 rpms when operating alone. The motor is currently positioned in the second-from-the-bottom hole. Any recommendations or advice?
Definitely clean the toons. You can easily lose 10 MPH off the top end. Happened to me last summer (my first season with a relatively high horsepower tritoon). Your second to last picture shows a lot of growth on the toon.
Exactly. 👍
Rick

Sights are for the unenlightened.

User avatar
Rick McC.
Posts: 417
Joined: Fri Mar 31, 2017 7:12 pm
Location: Weeki Wachee, Fl

Re: 23' Sylvan tri-toon Yamaha 200

#10 Post by Rick McC. » Sun Jul 16, 2023 1:30 pm

My 24 foot tritoon has a 225 Honda and gets up into the mid-40’s pretty quickly.
It’s rated for 300 HP; but I see no need to go any higher.
Rick

Sights are for the unenlightened.

Crab Island Cruiser
Posts: 61
Joined: Thu Sep 18, 2014 6:35 pm
Location: Eglin AFB

Re: 23' Sylvan tri-toon Yamaha 200

#11 Post by Crab Island Cruiser » Wed Jul 26, 2023 5:13 am

I have a 2019 Sylvan 8522 with the 200 yami on it. It's a tritoon with strakes on all 3 tubes. I'll have to check and see what size/pitch prop is on it and what holes the engine is mounted on, but my max speed is 38 downhill with a tailwind. lol. It hits that speed at about 5700 rpms and max rpm is around 6200ish. I have a 60 gallon tank mounted in the transom. I'll see if I can upload some pics.
Image
Image
Image
Image
07 22' Sun Chaser
Yami F115 power
low and slow

Post Reply