What Makes a GREAT hull????

[Darin Jordan]

Guys, what do you say we set the size to 32" ?
That way it could play at LSO and would be a decent size for "P"...

whatcha say?

Works for me...

And, if it were me... I'd get as much feedback as you can on the design of the sponsons and tunnel from guys like Jay Turner... guys who bleed tunnel...

[Flying Scotsman]

[QUOTE=Darin Jordan;55673]That's fine... I'll keep that in mind if I ever decide to open that can of worms... In the meantime, just assume that I am having NOTHING to do with rule changes and am just passing along information and ideas to try to be helpful and provide food for thought...


I totally agree

Douggie

[Flying Scotsman]

Works for me...

And, if it were me... I'd get as much feedback as you can on the design of the sponsons and tunnel from guys like Jay Turner... guys who bleed tunnel...

Jay, is Fluid on this forum and as Darin states he knows his cats and tunnels and most FE related problems and answers

Douggie

[Doug Smock]

Works for me...

And, if it were me... I'd get as much feedback as you can on the design of the sponsons and tunnel from guys like Jay Turner... guys who bleed tunnel...

Absolutly!!!

Jay, AKA Fluid IS the "Cat Man"

Doug

[Spot Me 2]

Guys, what do you say we set the size to 32" ?
That way it could play at LSO and would be a decent size for "P"...

whatcha say?

I love the size!!!

[Mich. Maniac]

I vote a rip-off combination hull between Maritimo and Mean machine. sponsons of the Timo and front end, and width and deck and rear of the MM. There would be NO better hull than that. Whatever... Everyone is gonna have their own design ideas including Joe Turner.

[Flying Scotsman]

Mich, no rip-offs. Our friends from Asia have that market cornered. Can one talented individual come up with a new concept??
Dougiie

[Mikey P.]

Thank you very much for the race spec requirements!

I don't know Jay but as things progress I will be sure to contact him. i've spent the afternoon studying both super cat videos and r/c cat videos. One major thing I notice is that r/c boats that get their nose in the air and slap down BOUNCE like a spring without a shock. The Supercat counterparts cut the water don't bounce as much unless the center keel hull hits the wave.

I think I'm right on this. I really think the front of r/c cats sponsons might have a little too much lift to them causing that unsprung bounce. I'n thinking a thinner taller sponson will make a better handling boat.
I might be way off on this. LMK

For the legnth of the boat. I do want the hull to fit into a race class. Fitting two race classes is even better. Now we have the OFFICIAL LEGNTH!

We are also knocking around the idea of a 3/16" aluminum transom brace molded into the carbon. No soft wood or reinforcing.

Do you guys want something other then L brackets for motor mounts or is the bracket mount good enough?

[Darin Jordan]

Do you guys want something other then L brackets for motor mounts or is the bracket mount good enough?

L-style motor mounts don't really cut it that well any longer... They tend to flex and cause drag and wear in the driveshaft...

Something with 4" rail spacing would be good. That would fit a variety of popular motor mounts, as well as add to the overall rigidity of the hull...

[Mikey P.]

about the guy who will be building...

A little about me. for those of you wondering where this guy came from and why he thinks he can just design a boat and expect it to work.

I'm not going to pretend I'm some hydrodynamics master from the Naval Academy or something. I'm just an average joe. A good portion of my life I have spent on the water. Through the years either my family or I have owned a number of different boats. Here are some of those boats. 21' Starcraft Islander with OMC outdrive, 1975 24' Sea Ray (we still own it and fish with it regularly) a bit modified, numerous 14 to 16 foot aluminum boats, 1991 Malibu euro f3, 2001malibu sunsetter, 10' zodiac w/15 yamaha (my favorite), and a 21' Checkmate with a 300hp Merc. All of our boats have had critical downfalls and none of them can do what the other can do. For example, The malibu's wouldn't handle another boats wake at idle without water coming over the nose. They only back up in knid of a one way slide too. And the Sea Ray is a handful to make turn in calm water at cruising speeds. You cant hardly turn ours without using the trim tabs in unison with the steering wheel. The aluminum Islander was so light for a big water boat you couldn't control it at idle in chop. We fixed that with 600 pounds of sand in the bow. Dirty riveted aluminum boat hulls have a very hard time breaking the 35 mph mark no matter how much power you put behind them. And for the zodiac...well, way too much fun for most people. But, it wouldn't turn at all, unless you were on plane. I grew up as a fisherman and a water skier. I learned to barefoot when I was 14 and gave it up about the time I was 21. If there is any sport in the world that'll teach someone practical hydrodynamics, I think that sport would be barefoot skiing. I gave it up after my long time ski buddy broke his neck. He's ok now with a couple oz's of titanium keeping him together. I remember when "phasers" were introduced onto knee (this is before wakeboards) boards. They were just little concave partial spheres cut out of the bottom of the board. I can't put into words how much my back muscles love those phasers! I also remember when I took the little tiny hydro fin off the turn fin on my slalom ski. When I entered bouy 1 my ski shot all the way to the beach. Until that moment I thought that little fin, which was only about 1.5" tip to tip, was just a joke and a marketing scheme. I sometimes design my own fishing lures too. I've had great success making them swim were intended. But they have not caught me many fish. They swim great though! Hopefully one day I will be able to provide my Little girl and two boys a lake in the back yard like my parents did for me.
Well that's just a small taste who I am. Hopefully this design goes well and we all get a great boat. It's all in fun anyway. I can't take it too seriously. It is, after all, a toy boat!

Mikey P.

[Mikey P.]

L-style motor mounts don't really cut it that well any longer... They tend to flex and cause drag and wear in the driveshaft...

Something with 4" rail spacing would be good. That would fit a variety of popular motor mounts, as well as add to the overall rigidity of the hull...

Can you shoot me a link?

Keep in mind the motor mount will have to work for a single and double "screw" set up.

[Ub Hauled]

Mikey,
the rails are a great idea in my book as well. Another thing, with today's electric power, I think we should build the hull around one power plant. Reason being is, I rarely see a race cat with duals at least here in the USA. Another good reason is that LSO and "P" allow for one motor only.
Besides, making the sponsons large enough internally will accommodate a mount and motor for those that would like to have dual motors to run a sport version. If this is a competition boat, we'd wanna give it the best scenario to start with, am I right? Guys, before I hav to put my flame suit on, I don't have anything against the dual version, but in a hull that "small" it would run better as a single motor on rails, even Jay's Stryker (43") is one motor.

[Ocean Racer]

The design Darin is thinking of is a single motor setup its a common setup in gas boats. One thing you could do is make a pieces of CF that sticks up so you can slide the motor into the mounts. This would work with a dual setup in the sponsons and a lot easier than trying to line up screws in the dark. Ill look for a picture to help you get a visual.

[Ocean Racer]

Ok I found the motor mount I was talking about. Dr.Jet used this mount in his S.L.O.B. hydro setup and it works pretty good.

[Mikey P.]

got it. sweet set up. will do!