Speed question

[broncosguy711]

Dumb I am sure, but would like to learn. How is the top speed in MPH measured for a boats horse power? if someone is shopping and they are looking at a 80, 85, 90, 115 and 125 horse. what are the actual speed differences?

Thanks-

Broncs

[Fishin4Life]

Many factors go into the actual speed of the boat. It can not only depend on the HP, but also prop selection, how the motor is trimmed out...etc. Generally yes, a larger motor = better speed or better whole shot. BIGGER THE BETTER

[broncosguy711]

OK 80 horse motor. what is a normal MPH speed range with a 19 foot boat? What should I be seeing for performance wise and if it is up to where it should be.

[Valv]

Too many variables, but I would say $ 30mph with an average boat, possibly less with fiberglass, possibly more with aluminum

[broncosguy711]

OK THANKS

[Fishin4Life]

I would go bigger than an 80 if I could on a 19ft boat. What is the boat rated for as far as a motor? I would assume somewhere around 150? just a guess.

[broncosguy711]

rated at 85

[Fishin4Life]

Oh wow, i would have never guessed that low on a 19ft. Just curious, why were they looking at 125hp motors?

[ewirz]

FYI- I have an Alumacraft Tourny Pro 175 (17'11") with an 88" beam, tiller. Boat's rated for 80hp, have a 75hp Merc on it. With just me, full tank, and all my fishing gear (3 batteries, 2 trolling motors, ect.) I max out around 37-38mph. I would imagine a 19' boat with that rating would be around that...

ERW

[broncosguy711]

Were looking at the different sizes as hypothetical for different speeds. It is a Spectrum. not sure if that makes a difference for rating or not. I tried to get the rating thing earlier, but that went kind of south.

Broncs

[champion]

warrior 1890 tiller, 90 merc two-stroke, stainless steel prop, fuel, gear and myself, 41mph top end. On Mille Lacs w/ a beautiful breeze, maybe 30mph...FYI

[Fishin4Life]

Oh now we are comparing speed...

14ft crestliner, 18hp johnson, tiller, 23 mph with the wind at my back. LOL wanna race!

[crappace]

05 1750 Fish Hawk tiller with the 05 60 4 stroke Merc, 31 with just me and gear on the GPS.

[jbell1981]

'61 14 footer with '57 10hp johnson with 3 guys and gear, get passed by birds, fish, grandma with her walker and the snail riding the waves.

[Valv]

Dodge Cummins turbodiesel with VanAaken chip, 300hp injectors, BHAF filter, 5" exhaust, Holley Blue fuel pump, Goerend Bros transmission....now beat this..... huh.

[Gissert]

Valv - BHAF? You been hanging out on the TDR site?

Boat - 2001 Lund Mr Pike 16, 90 hp Yamaha 2 stroke - 34 GPS mph.

[Valv]

Big

Honking

Air

Filter

TDR rules....of course I'm a member

[BEMIDJIJOE]

I have a 92 1660 Pro-v with a Merc 75. With me (265lbs) 3 batts, full tank of gas and gear with another guy in it my GPS says 35-36

[BEMIDJIJOE]

I have a 92 Pro-V with a 75 HP Merc. With me a fishing buddy three batts and a full tank of gas it will do 35 on GPS

[RobertELee]

34FT Cruisers Inc. w/ Twin 454's = 700hp --- 58 mph with 350 gallons of fuel 4 batteries, generator, and oh yeah, couple cases of beer!

[BobT]

1998 Sylvan Adventurer 1600 (16'), 1998 Johnson 90 2-stroke, full tank of fuel, gear, my wife and myself. 43mph on calm water with GPS. Actually does better with two riders because I'm able to trim it just a bit more without porpoising.

Bob

[Fishin4Life]

Quote:

---

34FT Cruisers Inc. w/ Twin 454's = 700hp --- 58 mph with 350 gallons of fuel 4 batteries, generator, and oh yeah, couple cases of beer!

---

I bet your bank account goes faster than the boat! LOL

[Ralph Wiggum]

I know a guy with twin Chevy 502s in his boat and he said $800 a day is not uncommon

[hovermn]

16' fiberglass runabout, 60 hp Suzuki outboard, 18 gal of gas, passenger and gear. 54 mph summer, 65 mph winter measured with GPS

[SteveWilson]

18' Lund Fisherman 140HP Johnson 4-stroke, food, drinks, wife, kids, 13 rods, one full live well, 40 gal of gas, kicker on that back - 5800 rpm @39mph GPS

[hovermn]

I'm curious. How far does 40 gals. go?