Performance Question

[captainQ]

Great site you have here, Glad I found it.

I am looking to buy a older model SC for fishing on Quabbin Res. in Massachussetts. Rules are 20 hp 2-stroke or 25 hp 4 stroke.

Currently alot of guys there are running older SC's on it that are getting 20 mph (GPS) with either of the above engines, although most 2 strokes are kicked up to 30 hp. Some are SS, Jupiters and a few Superfisherman.

I've been searching for these models and want the best possible perfomance as it's quite a large body of water and getting 20 mph out of it is important.

My current boat is a 2002 SmokerCraft Stealth 172, hull wieght is 1250 pounds and a 2002 Merc 25 hp 4- stroke bigfoot (which just popped) moves it along at a snails pace of 12.5 mph with normal gear and 2 occupants.

I guess my biggest question is do you feel 20 mph is reasonably attainable with that power on a 1978, 16 foot SS ?

Can you get more out of it than 20 MPH ?

Thanks

 

[ezmobee]

Re: Performance Question

Nope. I had an 85 on my 16' Jupiter and was only hitting 35. Now I know I needed some work on my setup (prop, motor height, etc) as the boat did plow just a bit. I'm hitting 39 with a 90 on an 18'. No way you're going to see 20 with a 20.

 

[motorpsykler]

Re: Performance Question

Wow, I can answer this question, because I did it last year. I have a four stroke Yamaha F25 on my 16 ft Lund Pike, I get 22-23mph GPS on it. Just out of curiosity, I put it on my 72 SS to see what it would do. I expected much less because the beam on the Starcraft is much wider. I was shocked that it topped at the same exact speed 22-23mph. For me though, it wasn't very usable. The Lund planes at about 14-15mph, giving about a 7 mph range of operation. The Starcraft didn't plane until 20mph giving really only about a 2mph range of operation. It's full throttle or nothing with the Starcraft and a 25hp four-stroke. So I got a F50. Horsepower limits blow, hope they never happen up here.

 

[Andy in NY]

Re: Performance Question

my 16' jupiter with a relativly bare bones hull barely hits 26 gps with 2 adults, no gear and 6 gal gas.

i cant see a 25 coming close to that.