Outboard Top Speed World Record 200 mph Attempt

[Mr. Demeanor]

Best of luck and thank you for sharing your project with us!

[Ray Leach]

I guess if I had to give a vote for choice of power for this deal, I would have to use the old saying "if it ain't broke don't fix it". Meaning when the record was set, they used the hull design of the times and the motor that had the most cubic inches. Fast forward to today......Why would you change that theory when both parts of the equation have just gotten so much better since that time? I believe the outrigger style hydro is definitely the most advanced hull to attempt a run at 200mph. That being said you gotta go with shear cubic inches for something like this and that's a big bore V8. And NOBODY makes that motor better than MONTY RACING. I don't think a motor dependent on a power adder like nitrous, turbos, or blowers is the way to go. To many possible issues. Less is more in that respect, keep it simple, big pistons and a lots of them


Granted I may be a little bias but with good reason. I know first hand what that motor is capable of and I have NO doubt that if that boat can handle the speed and there is a pilot (hate to use that word but it applies) out there to hold that bad boy down........we could see history, and that would be one for the books.

[300x Stoker]

Kinda hard to argue with that logic.

keep it simple, big pistons and lots of them

[Forkin' Crazy]

Almost there

Can I drive?....

[RBT]

I guess if I had to give a vote for choice of power for this deal, I would have to use the old saying "if it ain't broke don't fix it". Meaning when the record was set, they used the hull design of the times and the motor that had the most cubic inches. Fast forward to today......Why would you change that theory when both parts of the equation have just gotten so much better since that time? I believe the outrigger style hydro is definitely the most advanced hull to attempt a run at 200mph. That being said you gotta go with shear cubic inches for something like this and that's a big bore V8. And NOBODY makes that motor better than MONTY RACING. I don't think a motor dependent on a power adder like nitrous, turbos, or blowers is the way to go. To many possible issues. Less is more in that respect, keep it simple, big pistons and a lots of them


Granted I may be a little bias but with good reason. I know first hand what that motor is capable of and I have NO doubt that if that boat can handle the speed and there is a pilot (hate to use that word but it applies) out there to hold that bad boy down........we could see history, and that would be one for the books.

To plays devils advocate, I would like to see a "little" motor set the record. I have no love for mother merc, but for me it is the simplest way to go fast. They have the durability to run at sustained rpm for the few kilometers it will need to go, it is LIGHT, it has a gearcase that is reliable, and is the underdog..... for once.

If you are building two boats, put a merc on one and an OMC/Bomber on the other.

RT

[Speed Jr.]

Not trying to knock ya guys, but you may want to re-think using those rear sponsons...

Jr.

[JWTjr.]

Kudos to you guys and all the best on this effort. It is truly refreshing to see, after 23+ years, someone going after it again.

More than a few "able minds" from past attempts are still alive and well and available for brain-picking; I'm sure you know this of course, but just putting it out there. Guys like Dickie O'Dea, John Sherlock, Mackey (Bill McEvoy), RC Hawie and others from the early 1980s record that Sherlock set are still around and I'm sure would give advice...they had that Karelsen running just under 160 with a true home-brewed effort and an O'Dea 2.4 making 300+ hp. Some of the guys from the Bud Davie days (Wartinger and others) are also still around. Were it me, I would not ignore these guys. I have no doubt it's doable with a 2.5, but some of these other guys are on the right track in my opinion...I'd rather use bigger cubes and lower rpm. Same as OMC did in 1966 when Gerry Walin used a 90ci V4 to go nearly 131, and again in 1974 when he went 150+ with 99ci and blew it over...

John

[JWTjr.]

One more thought, about corporate interest and sponsorship. We can bitch and whine about Merc, BRP and whoever wanting a piece of the glory should you succeed but not wanting to be a part of it until you do, but unfortunately that is today's corporate cop-out world. It sucks--but no sense dwelling on it. You might as well bemoan the weather or the economy. If you're going to go for it, go for it. The days of the outboard giants battling it out on the course or the kilo runs are over, at least for now. If you decide to give them some of the glory when you set the record, that's up to you.

JT

[Spectre Powerboats]

What is the weight of a OMC V-8 and their V-6 powerheads? Are the guys modifying the 3.0, 3.6 or the 4.0 V-8 for the most power?

[flabum1017]

[StratosVT]

<center>Engine RPM</center>	<center>Gear Ratio</center>	<center>Propeller Pitch</center>		<center>Propeller Slip</center>	<center>Speed MPH</center>
<center><input name="engrpm" value="7000" size="5"></center>	<center><input name="gratio" value="1" size="3"></center>	<center><input name="pitch" value="36" size="4"></center>		<center><input name="propslip" value="0.1" size="2"></center>	<center><input name="speed" value="214.8" size="3"></center>
<input value="Compute" type="button"> <input value="Clear Fields" type="reset">

The prop slip guess is probably way off but the #'s look doable to me. It would take major torque to run a 1:1 gear with 36" prop but I bet a really big bore stroked v6 or a v8 would be up to the task.

[Spectre Powerboats]

Yes. I have thought of the turbine outboard also.

[Da Bull]

I`m surpised nobody has mentioned the Wizzard. You want tourque, You got it! Two stock 300 drag`s with the power heads canted in for better aero and presto, 600 hp along with however much juice you dare but a 150 shot on each nets 900 ponies. That just might turn that 1.0 gear w/36p prop.

Seem`s simple to me.

DB

[Michael J Giesler]

A Caldwell stroker motor would be my choice i do think a 2.5 could do it so could a omc V-8 or v-6 it's all about money, time, and luck plus a set of balls good luck i hope you do it

[Rayzor]

When I spoke to Dr. Alex Hledin at PTR Engines about going after the record (he built Guido's powerhead that set the current record), he recommended going to Dave Bush for power. He said you cannot get the power out of a 2.5 to get the record - and twins is out of the question because of weight and drag. His biggest fear is will the motor last for the distances and amount of runs it would take to get the record. You lock up a motor at big mph and you're gonna' be in trouble. He and his brother (Peter Hledin) talked me out of going after the record. I do wish you the best of luck, and if you'd like to talk to me further about what I learned through my research, feel free to PM me. Good choice on the DE hydro, I spoke to Dan in length and was also going to use that same boat.