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Weight really isn't that much of a secret imo, as I'm certain it's within 50lbs one way or another of 300lbs. A full composite capsuled tunnel weighs under 400lbs, so I'd think it should be no more than 100lbs lighter. It's an awesome looking little rig, and I hope everything goes well for you guys! Just please try your best to put safety at the forefront of this effort..........Quote:
Originally Posted by aerotech
Wow! I don't know what running weight your shooting for but at 1100lbs with just 500 outboard ponies you should be cooking at 200+ !
That rigger is a fine looking specimen!
IMO. I believe it depends on the coefficient of drag. Total drag (Aero+Hydro) vs total effective power. I think weight surely has a direct relationship to drag. All this must be balanced with stability, which when increased may have a negative impact on drag. This is my opinion and a rather sloppy way of expressing it. The experts will point out where my thoughts are incorrect. I welcome their corrections. What a fantastic project from a great group of brave people. Kindest Regards. Smitty
What made you decide on 18 foot over a longer hull?Quote:
Originally Posted by aerotech
I hope you can handle this, but here is the just released NEW UIM cockpit rules for boats over 150mph.
Proposed text
World records may be attempted with the following craft:
- All UIM series and classes,
- American Powerboat Association classes,
- Prototypes
“For classes requiring a UIM or APBA registered cockpit and where the existing record exceeds 150 mph, additional requirements will apply. These requirements are the following:
The registration of the cockpit is required to satisfy the following:
- The cockpit in the hull attempting the World Record shall be registered as described by the UIM registration process and the following.
- The cockpit builder shall be a registered UIM cockpit builder.
- As part of the registration process, the engineering analysis of the cockpit structure shall be submitted for review. This analysis will use the loads that would exist from the pressures resulting from the projected speed of the hull, entry angles, plus a safety factor and show that the integrity of the cockpit can be maintained. The analysis also shall include the structural analysis of the shell, windshield, roll cage (if applicable) and attachment to the hull.
- As part of the certification process, laminate samples representing the design/build required by the registration process will be supplied (cockpit, shell and their junction) for bend testing at load deflection values consistent with the analytical applied crash loads. These samples will be tested in accordance with the process referenced in 509, UIM Cockpit Test Standard with appropriate loading and deflection requirements consistent with the structural analysis accomplished in 3) above.
Can you acuate the sponsons? Ive always thought being able to rotate the sponsons on this type of craft could be a benifit in the upper aero limitts instead just trim and design. Like a foil/Sponson effect,flaps if you will. I know they are very effective in the 140mph river race boats that incorperated wings to the bow to control there hulls limitts giving the hull design an exrta tool to surpase the hulls limittes alone.
Scroll down to Todd Lamb on this link. http://www.uimpowerboating.com/vsite...m-item,00.html I have been building APBA approved capsules for 20 years and UIM certified capsules for 10 years. I am aware of what they will want. Thanks for the heads up though. I'll take all the help and advice I can get. Good looking out for us. How is your guys deal coming together Ken?
Welcome to the big leagues.Quote:
Originally Posted by Ken Warby
We have a UIM certified cockpit installed and it looks like it just became junk. Here is the UIM rules for the WWSR cockpits...........
Proposed text
“…including a UIM registered reinforced cockpit. The registration of the cockpit is required to satisfy the following:
- The cockpit in the hull attempting the World Record shall be registered as described by the UIM registration and the following requirements.
- The cockpit builder shall be a registered UIM cockpit builder.
- In addition the cockpit should be mounted inside a shock absorbing shell. This shell should be built using multiple layers of cores that would absorb the first shock.
- The cockpit should be equipped with a safety seat. Safety restraint (6 or 7 points) should be attached to the pilot’s safety seat.
- As part of the registration process, the following analysis shall be submitted for review:
- Engineering analysis of the cockpit structure: this analysis will use the loads that would exist from the pressures resulting from the projected speed of the hull, entry angles, plus a safety factor and show that the integrity of the cockpit can be maintained.
- Engineering analysis of the pilot safety: this analysis will use the loads that would exist from the pressures resulting from the projected speed of the hull, entry angles, plus a safety factor and show that the integrity of the pilot can be maintained.
- Structural analysis of the shell, windshield, roll cage (if applicable) and attachment to the hull.
- As part of the certification process, laminate samples representing the design/build required by the registration process ( cockpit, shell and their junction) will be supplied for bend testing at load deflection values consistent with the analytical applied crash loads. These samples will be tested in accordance with the process referenced in 509, UIM cockpit test standard with the appropriate loading and deflection requirements consistent with the structural analysis accomplished in 5) above.
A World record will not be approved without a cockpit registration which successfully satifies these requirements. It is going to be an expensive engineering nightmare.
Yep. There is a lot more that goes into one of these, than just hanging a big ole motor on her. :D I have made some 5000N plus lay-ups to raise my certification, just have not got around to sending them in. In 2003 we actually hit over 4000N, but we only needed 2000N then. Knock on wood, I have built 5 capsules out of the older design Pugh capsule molds, Gary sold me in the90's. 25 out of the Caniff/Lamb capsule molds, 2 off of my own mold design and a dozen plus cockpits for offshore. There has been no fatalities and I will go to bed tonight and pray I did not jinx myself.Quote:
Originally Posted by Instigator
Luckily Ken we knew these were coming, because of what the UIM guys overseas are going through, so we built our that way. We still have side pods, roll cage and a few other items to finish ours up. Sorry to hear about yours. That stinks!
sam blanco with APBA not sure about the UIM contact / (name spelling is off ) was the go to guy for capsule certification,s and the last i heard in 2006/7 was 5000N
Very cool.Quote:
Originally Posted by aerotech
It's amazing to see what it really takes to do something like this. A big # on a radar gun or GPS is way impressive but to do something that is A, semi safe and B, recognized by the APBA or UIM....., totally different.
Way harder to put a "real" # up and have it stick.
Glad to see you have the brains and the ability to be smart about it.
I am friends with Mr. Warby and one of the most depressing things about his record is that EVERYONE that has attempted to break it has died trying.
You are preparing to go somewhere almost as scary.
Way outta my league but so impressive to watch this unfold. Would love to be there and see the runs. I could wash the boat or check the air pressure ....LOL
:thumbsup:I'll wax the rig and help the driver suit up!:DQuote:
Originally Posted by 1FASTLASER