- Mar 3, 2000
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Who are you to say they're lying?Originally posted by: oldsmoboat
Claims 100+ MPH
This boat would be lucky to do 75 MPH
Jeez, another liar.
Originally posted by: oldsmoboat
Claims 100+ MPH
This boat would be lucky to do 75 MPH
Jeez, another liar.
It's way outlandish. It's not even possible.Originally posted by: Eli
Who are you to say they're lying?Originally posted by: oldsmoboat
Claims 100+ MPH
This boat would be lucky to do 75 MPH
Jeez, another liar.
If that second one is true and he's pushing 580HP, it doesen't seem outlandish.
oldsmoboatOriginally posted by: Eli
Who are you to say they're lying?Originally posted by: oldsmoboat
Claims 100+ MPH
This boat would be lucky to do 75 MPH
Jeez, another liar.
Originally posted by: oldsmoboat
oldsmoboatOriginally posted by: Eli
Who are you to say they're lying?Originally posted by: oldsmoboat
Claims 100+ MPH
This boat would be lucky to do 75 MPH
Jeez, another liar.
Hard to say since he doesn't list the cam or compression ratio. It is a naturally aspirated motor with a single carb. From my experience, I would say that it definitely doesn't go over 90 and probably closer to 80. It is a fairly fast hull.Originally posted by: notfred
Originally posted by: oldsmoboat
oldsmoboatOriginally posted by: Eli
Who are you to say they're lying?Originally posted by: oldsmoboat
Claims 100+ MPH
This boat would be lucky to do 75 MPH
Jeez, another liar.
How fast do you think the second boat would actually go?
Originally posted by: oldsmoboat
It's way outlandish. It's not even possible.Originally posted by: Eli
Who are you to say they're lying?Originally posted by: oldsmoboat
Claims 100+ MPH
This boat would be lucky to do 75 MPH
Jeez, another liar.
If that second one is true and he's pushing 580HP, it doesen't seem outlandish.
Damn.. :QOriginally posted by: oldsmoboat
Hard to say since he doesn't list the cam or compression ratio. It is a naturally aspirated motor with a single carb. From my experience, I would say that it definitely doesn't go over 90 and probably closer to 80. It is a fairly fast hull.
One of my friends races and his last boat was a light lay up in a Daytona hull. He had 1200 HP and did 133 in the 1/4. The boat was naturally aspirated and ran a tunnel ram with two carbs. His lake boat was about 800 HP and would do about 95 (or 89 with him and I in it) and 115 on nitrous with just him in it.
His newest lake boat runs 123 without nitrous on a blown motor with 3 carbs. It a 25' Carrera.
Originally posted by: PatboyX
my chicks little brother is always looking up mac stuff on ebay.
there are so many macs on their listed with OS X that are way to old to successfully run it but they sell them with it.
The speed for the Carrera is top speed.Originally posted by: Eli
Damn.. :Q
So it takes some serious power to move a boat, eh?
Wait, you're talking about the quarter mile... what about top speed?
It ain't the friction, it's the displacement of the water by the hull. Water = 8.6 lbs./gallon, a gallon = ~1 cubic foot. In other words, it's relatively heavy and requires a lot of energy to displace, and you're displacing tons of it as you go (and the faster you go, the more your're displacing).Originally posted by: TerryMathews
Yeah, the coeff of sliding friction of gel coated, painted fiberglass gliding over water is pretty darn low.
Look at it this way: 580HP is more than enough to push any car to 100+ MPH, and each boat is smaller and weighs a good deal less.
Uhm, once you are over a certain speed, the boat displaces less. When riding in any boat, at a certain speed it will plane on tope of the water. In a race designed boat, what effectively happens is the entire hull is skimming on top of the water, and only the prop and prop assembly are submerged. There are boats that are designed solely to displace and do not plane (fishing boats), but we are talking racing boats, or boats designed to go very fast. For example, once my boat gets on to plane, we are able to throttle down because it takes less energy to maintain the planing speed once you reach it.Originally posted by: Vic
It ain't the friction, it's the displacement of the water by the hull. Water = 8.6 lbs./gallon, a gallon = ~1 cubic foot. In other words, it's relatively heavy and requires a lot of energy to displace, and you're displacing tons of it as you go (and the faster you go, the more your're displacing).Originally posted by: TerryMathews
Yeah, the coeff of sliding friction of gel coated, painted fiberglass gliding over water is pretty darn low.
Look at it this way: 580HP is more than enough to push any car to 100+ MPH, and each boat is smaller and weighs a good deal less.
580hp might get you to 100 mph in a very small and fast boat, but no way to 148 mph as that seller claims. Plus, read the engine specs, this guy is a complete liar. A single-carb Holley 750 on a 454 isn't gonna get you to 580 horses no matter what's inside. There's just not enough airflow. That's a 450hp engine at best.
I'm aware of that, but even when planing, you're still displacing water (or where'd that wake come from?) and the amount of that displacement is still going to increase as you accelerate. Planing speed is usually not that high, around 40mph, and that's a long ways from 100 or 148 mph in a boat.Originally posted by: Marauder911
Uhm, once you are over a certain speed, the boat displaces less. When riding in any boat, at a certain speed it will plane on tope of the water. In a race designed boat, what effectively happens is the entire hull is skimming on top of the water, and only the prop and prop assembly are submerged. There are boats that are designed solely to displace and do not plane (fishing boats), but we are talking racing boats, or boats designed to go very fast. For example, once my boat gets on to plane, we are able to throttle down because it takes less energy to maintain the planing speed once you reach it.
