25 HP to 50 HP. Difference?

[jbouchard12]

Hi all, I joined the boating world this year with a 1990 sweet 16 tracker. The boat was built to be a bass fishing style boat. The deck on the front is awesome for fishing but extremely heavy. Currently I have a 1991 evinrude 25 hp motor powering the boat. It can't quite make the boat plane causing it to top out at 13-17 mph depending if there is one or two people in the boat. It also causes it to push huge waves from the sides. My question is if I upgrade to a Yamaha 1993 Pro 50 HP, do you think it will be strong enough to get on plane? Also how much MPH would I gain? I know more info is probably required but if anyone has experience with this I'd love to know.
Thanks
-John

 

[WIMUSKY]

What's the hull rated for? 50hp should be plenty..... 40 should be plenty. From what I saw it only weighs 425......

 

[jbouchard12]

The deck that was added to the front probably adds about another 200 lbs.

 

[WIMUSKY]

What's HP rating for that hull?

 

[jbouchard12]

60 HP

 

[WIMUSKY]

With the added weight of the casting platform, no doubt the 25 is struggling. Rule of thumb is to go with 70% of rated HP. Being a 60 that means 42. Even with the extra weight, it is my opinion that if you have a line on a 50 it should work fine...

 

[99yam40]

also depends on how much weight you are putting in the boat and the prop you are using to push it with

 

[steelespike]

If its rated for 60 go for a 60. The Evinrude Etec 40,50 and 60 are the same basic motor. And the 60 hp version more efficiently develops its horse [power.A 60 will be loafing when running at the 40s speed.
You never see anyone say "I wish I had less horsepower".Find yourself a good 60.