Quickness ?????
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Quickness ?????

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    Senior Member TNYoungblood's Avatar
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    Default Quickness ?????

    Hey guys i'm tryin to get a grasp on all this stuff but what makes a jet boat "QUICK" ??? I was reading another thread about quickness and tryin to keep the mph down and just got me wondering how does one make a jet boat "Quick" ??? Not lookin for any secrets just the basic knowledge some of you race guys have learned over the years on the track ??



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    Ain't Right Racin piston in the wind's Avatar
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    Quote Originally Posted by TNYoungblood View Post
    Hey guys i'm tryin to get a grasp on all this stuff but what makes a jet boat "QUICK" ??? I was reading another thread about quickness and tryin to keep the mph down and just got me wondering how does one make a jet boat "Quick" ??? Not lookin for any secrets just the basic knowledge some of you race guys have learned over the years on the track ??



    Thanks
    Weight & plenty of power oh yea snake oil.

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    Senior Member TNYoungblood's Avatar
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    Quote Originally Posted by piston in the wind View Post
    Quote Originally Posted by TNYoungblood View Post
    Hey guys i'm tryin to get a grasp on all this stuff but what makes a jet boat "QUICK" ??? I was reading another thread about quickness and tryin to keep the mph down and just got me wondering how does one make a jet boat "Quick" ??? Not lookin for any secrets just the basic knowledge some of you race guys have learned over the years on the track ??



    Thanks
    Weight & plenty of power oh yea snake oil.
    Gotta be more to it than that !!! There's guys gettin it done with not that much HP. I think alot of people use HP as a crutch. JMO
    Last edited by TNYoungblood; 03-04-2013 at 03:15 PM.
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    With a good base line set up and decent power test and tune. Lots of changes to make one at a time. Good luck.

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    Senior Member bp298's Avatar
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    Quote Originally Posted by TNYoungblood View Post
    Gotta be more to it than that !!! There's guys gettin it done with not that much HP. I think alot of people use HP as a crutch. JMO
    from a dead stop at idle, getting max thrust out of max hp available, within an instant. bowl pressure instantaneously rises, no dips slips or drops going forward. boat goes forward and gets on top within 20 or 30', doesn't bounce. just takes a set lightly on the water moving forward, maintains it's attitude and runs through.
    weight is et, no question. but super light has it's own issues. whether a hull is light, medium, or heavy, if it's a race deal you want to optimize it to get the best performance out of the hull that you can. oil of snake can be helpful...

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    Senior Member TNYoungblood's Avatar
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    So Bob is it all in the launch ??

    Take my GW for instance, it's heavy and I'd say it's fast. But it sure ain't quick. The Cheyenne weighs half of what the GW does but I have yet to ride in it. I don't won't fast, I won't it quick !!
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    Senior Member cyclone's Avatar
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    80 percent of what makes a jet boat quick is the holeshot. Like bp said, get the boat moving up, out of the hole, and on top of the water without the bow slapping down or hopping. Every time it hops it scrubs off speed and increases the amount of time it takes the hull to air out.
    Then you need to make sure it accelerates as hard as possible.

    Build it light, rig it light, spin the pump right where the engine makes max power, decrease as much drag in the water as possible and you may have a quick boat. Course, then you have to have the stones to shoe it, too.

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    "BEER BUDGET RACING" Bodean's Hammer's Avatar
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    Take it from a guy that isn't quick or fast but still gets down the track on the number. The launch is extremely important. When I red lit at SITC the boat launched almost perfect, and I turned the red light on reeeeaaal early even leaving on the same number.

    The second thing I would say is you have to get that pump hooked up and spinning. Mines spinning but not hooking up very good but I'm working on that. There's no subsitute for test and tune time. Bring your tools, your extra hardware, a notebook and a gps. Leave the beer in the truck and make passes. Take pressure readings and tune.

    You have all the parts of the equation.
    Last edited by Bodean's Hammer; 03-04-2013 at 06:50 PM.

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    Senior Member cyclone's Avatar
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    The best example of boats that are quick versus boats that are fast are in PE and TE. A quick boat makes more efficient use of power than a fast boat.
    How many NA jet boats are running in PE versus how many blown jet boats vs blown V-drives? Very few. The few NA boats that can run the number without a power adder are pretty efficient.

    You can see it in the way they leave the starting line. Full power applied right at the hit of the throttle, boat on plane and aired out as quickly as possible while the boat in the other lane is left floundering.

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    Ain't Right Racin piston in the wind's Avatar
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    Quote Originally Posted by Bodean's Hammer View Post
    Take it from a guy that isn't quick or fast but still gets down the track on the number. The launch is extremely important. When I red lit at SITC the boat launched almost perfect, and I turned the red light on reeeeaaal early even leaving on the same number.

    The second thing I would say is you have to get that pump hooked up and spinning. Mines spinning but not hooking up very good but I'm working on that. There's no subsitute for test and tune time. Bring your tools, your extra hardware, a notebook and a gps. Leave the beer in the truck and make passes. Take pressure readings and tune.

    You have all the parts of the equation.
    Leave the beer in the truck my ass! It Don't count when you drink 12 on the way in the truck, then leave the rest in the truck. I know your type your just like me. I just load the ice chest in the boat before I leave & leave the rest in the truck...

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    Senior Member 67weiman's Avatar
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    Quote Originally Posted by piston in the wind:1966834
    . I just load the ice chest in the boat before I leave & leave the rest in the truck...
    Lmao

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    "BEER BUDGET RACING" Bodean's Hammer's Avatar
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    Quote Originally Posted by piston in the wind View Post
    Leave the beer in the truck my ass! It Don't count when you drink 12 on the way in the truck, then leave the rest in the truck. I know your type your just like me. I just load the ice chest in the boat before I leave & leave the rest in the truck...
    You remember that day when we tested mine for the first time after the keel job? I believe your words were " I told you not to do that dummy" after I dead footed it about 800ft into a pass. And I got a chest full of steering wheel....

    Funny but not really....lol

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    Senior Member Here Comes Whitey's Avatar
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    Quote Originally Posted by piston in the wind View Post
    leave the beer in the truck my ass! It don't count when you drink 12 on the way in the truck, then leave the rest in the truck. I know your type your just like me. I just load the ice chest in the boat before i leave & leave the rest in the truck...
    lol!!

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    Senior Member TNYoungblood's Avatar
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    How do you tune the boat to leave like it should when your running fixed hardware with no diverter ??
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