Other Speed Record Breakers Are Available!

[Ratliff]

well apart from the obvious bloke and his blue boat, it was really richard noble who kindled my interest. the ssc project was a total triumph over all the "experts" who said it couldnt be done and the sheer scale of the problems involved in preventing the car ploughing or flying. Mr Noble and Mr Green in particular deserve much respect!! donalds trials with the cn7 do not grab me in the same way, but to soldier on in the face of such adversity and doubt of his ability to do the job was a stupendous display of his courage and grit . art arfons, the "junkyard genius of the jet set" is right up there too. a demonstration of backyard ingenuity over corporate millions. ken warby, who i met in the black bull in coniston two years ago is another hero in the truest sense of the word. finally, craig arfons, a very brave man. but how he thought he was going to get the wwsr in basically a drag boat on steroids on a lake as short as lake jackson is beyond me. as ken warby said to me in the bull, "peak speeds stand for nothing, its the average that gets the record" brave men one and all!!

Lake Jackson is not that much shorter than Lake Coniston. And Craig's boat had half the weight of Bluebird but the same thrust, giving it twice the thrust to weight ratio.

[f1steveuk]

Taylor's problem was I believe a] pressure from outside sources, e.g. sponsors, and b] the angle and format of his planeing surfaces. It certainly (from what I have been told, I have never seen the footage) corkscrewed in, because USDII fell from the plane on one side very very quickly.

Craig, again, a bit of pressure to run when maybe he shouldn't have and his boat was a lengthened drag boat, that seemed to suffer a breakdown in stabilty when it was converted, especially when the the power was increased with the afterburner.

Taylor was the first person to use a throttlable rocket, which was one of the units built for the landing stage of NASA's Lunar Module. I'd love to know how he got his hands on that!!

[Ratliff]

Taylor's problem was I believe a] pressure from outside sources, e.g. sponsors, and b] the angle and format of his planeing surfaces. It certainly (from what I have been told, I have never seen the footage) corkscrewed in, because USDII fell from the plane on one side very very quickly.

Craig, again, a bit of pressure to run when maybe he shouldn't have and his boat was a lengthened drag boat, that seemed to suffer a breakdown in stabilty when it was converted, especially when the the power was increased with the afterburner.

Taylor was the first person to use a throttlable rocket, which was one of the units built for the landing stage of NASA's Lunar Module. I'd love to know how he got his hands on that!!

I have been told by boat designer Dan Ellison that sponson walking set off by a sudden change in sponson loading is characteristic of the Deaver type drag boat hull. Craig's boat began sponson walking when he chopped the throttle.

By 1979, many rocket dragsters, Funny Cars, motorcycles, and karts had been built powered by highly throttleable purpose-designed custom-built hydrogen peroxide monopropellant motors.

The USDII used a hydrogen peroxide monopropellant motor designed and built specifically for the USDII. This unit was rated at about 8,000 lbs thrust.

[Ratliff]

http://www.liquidquik.com/Photos/Videos/Videos.html

The Crash 1, Crash 2, and Crash 3 videos are why the Liquid Quiker team moved away from Deaver type hulls and adopted Dan Ellison's four-pointer design.

Threads merged- Mike

[ozjet400]

/quote]

I have been told by boat designer Dan Ellison that sponson walking set off by a sudden change in sponson loading is characteristic of the Deaver type drag boat hull. Craig's boat began sponson walking when he chopped the throttle.

More like the sponson walking was to do with the CG being to far back, and way to much air under the nose, ANY hydroplane will do that under theses circumstances , not just a specific design, look at any limited class, or Unlimited hydroplane at the end of the straightway, the amount of air under the hull is walking the front of the boat, but they then turn

All drag boats are only made for 400 metre runs, hence the CG further back compared to a kilo hull or circuit racing hull, plus higher angles of attack on the sponsons to get it our of the hole ( startline) faster, and a higher angle of attack on the air trap,to get it on top of the water, all theses features will kill you on a kilo run

At the end of the day the hull was NOT designed for a flying kilo run, the result confirms it

[f1steveuk]

By 1979, many rocket dragsters, Funny Cars, motorcycles, and karts had been built powered by highly throttleable purpose-designed custom-built hydrogen peroxide monopropellant motors.

The USDII used a hydrogen peroxide monopropellant motor designed and built specifically for the USDII. This unit was rated at about 8,000 lbs thrust.

What? truely throttable rockets, or simply as Henk Vink did, adjust fuel flow and guess a bit!!??

I have always been lead to believe that the NASA lunar lander engine was the first truely throttlable rocket motor, AND that is what Taylor had in USDII. The first bit of info' came from NASA, the second from a chap called Hallett.

[Ratliff]

/quote]

I have been told by boat designer Dan Ellison that sponson walking set off by a sudden change in sponson loading is characteristic of the Deaver type drag boat hull. Craig's boat began sponson walking when he chopped the throttle.

More like the sponson walking was to do with the CG being to far back, and way to much air under the nose, ANY hydroplane will do that under theses circumstances , not just a specific design, look at any limited class, or Unlimited hydroplane at the end of the straightway, the amount of air under the hull is walking the front of the boat, but they then turn

All drag boats are only made for 400 metre runs, hence the CG further back compared to a kilo hull or circuit racing hull, plus higher angles of attack on the sponsons to get it our of the hole ( startline) faster, and a higher angle of attack on the air trap,to get it on top of the water, all theses features will kill you on a kilo run

At the end of the day the hull was NOT designed for a flying kilo run, the result confirms it

Did you even know the name for Deaver type hulls before I mentioned it? Dan Ellison designed the hull for a drag boat that has run 270 mph. This is faster than most of the Bluebird records. I think Ellison knows what he is talking about when he says the Deaver type hull is prone to sponson walking.

[Ratliff]

By 1979, many rocket dragsters, Funny Cars, motorcycles, and karts had been built powered by highly throttleable purpose-designed custom-built hydrogen peroxide monopropellant motors.

The USDII used a hydrogen peroxide monopropellant motor designed and built specifically for the USDII. This unit was rated at about 8,000 lbs thrust.

What? truely throttable rockets, or simply as Henk Vink did, adjust fuel flow and guess a bit!!??

I have always been lead to believe that the NASA lunar lander engine was the first truely throttlable rocket motor, AND that is what Taylor had in USDII. The first bit of info' came from NASA, the second from a chap called Hallett.

Hallett was wrong. I gave you the correct information.

[Ratliff]

This is what it looks like when a vehicle is, in fact, powered by a rocket motor derived from the lunar lander.

[ozjet400]

/quote]

I have been told by boat designer Dan Ellison that sponson walking set off by a sudden change in sponson loading is characteristic of the Deaver type drag boat hull. Craig's boat began sponson walking when he chopped the throttle.

More like the sponson walking was to do with the CG being to far back, and way to much air under the nose, ANY hydroplane will do that under theses circumstances , not just a specific design, look at any limited class, or Unlimited hydroplane at the end of the straightway, the amount of air under the hull is walking the front of the boat, but they then turn

All drag boats are only made for 400 metre runs, hence the CG further back compared to a kilo hull or circuit racing hull, plus higher angles of attack on the sponsons to get it our of the hole ( startline) faster, and a higher angle of attack on the air trap,to get it on top of the water, all theses features will kill you on a kilo run

At the end of the day the hull was NOT designed for a flying kilo run, the result confirms it

Did you even know the name for Deaver type hulls before I mentioned it? Dan Ellison designed the hull for a drag boat that has run 270 mph. This is faster than most of the Bluebird records. I think Ellison knows what he is talking about when he says the Deaver type hull is prone to sponson walking.

I'm more than aware of a devner hull, and craig's boat

All Bluebirds records are done on on a flying kilo, not 400 metres , and would of had higher speeds if they were taken off a peak speed, but they are NOT, Drag boats and only hit peak speeds for a matter of metres,, I would like to see a drag boat do a run up to a kilo, thru a kilo, then shut down,7-8 miles of water is a hell of alot harder to control than 400 metres

Most hydroplanes will sponson walk with enough air under the front, they are pivoting on one rear point,