I love this stuff. As a mechanical engineering degree holder, I find it worthwile to examine any problems like those discussed and hope the library comment didn't offend. I was just trying to bring light to such a topic brought forth by such terrible outcomes. But, this needs to be done, and no participant needs to be silent as any ideas are food for thought.
Anyway, keep in mind folks, that the car is acting in its own coordinate reference and the driver's reference coordinate is the car around him/her. Whatever the car is going, the driver is not. The resultant forces delivered to the driver are products of the acceleration to the finish, the braking decceleration opposite the first after finish and the driver's momentum as a seperate body still acting in line of the intial acceleration. I'd think i'd start with the max force that the body can safely take and add a factor of safety (say 10%) and aim to find out what it takes to stop the car (i.e. distance, friction surface, chute area, other means) within that max.
Results 41 to 50 of 55
07-12-2008, 10:37 AM #41Junior Member
- Join Date
- Apr 2008
- SE Virginia
This is greatJeff
07-12-2008, 11:08 AM #42Voigt Precision Welding, Inc.
Miller Dynasty 200 DX, Miller Syncrowave 250, MillerMatic 252, Hypertherm Powermax 45, Auto Arc Trailpower 8000,272+187 lb Peter Wright anvil, 120 lb Fisher-norris, and more! Buffalo drill press, Grizzly Horiz. Bandsaw, Edwards shear, Barth Shear, bantam mechanical ironworker, Hopkins fly press, Doall Bandsaw, brown and sharpe surface grinder.
2007 Silverado 2500HD (tow vehicle)
2000 Camaro SS (Race car)
07-13-2008, 07:06 AM #43
1000 ft. nitro sucks , jmo .Make the tracks longer. The tracks should have to keep up with the cars , don't hold them back..
07-13-2008, 12:04 PM #44
The track will never keep up with the cars, most tracks don't have the room to expand. Eventually even the long tracks will become compromised as the speeds increase. If you start giving ultimatums to the tracks, you will lose 1/2 of the ones on the tour. Bet on the fact that they are: #1. Going to slow the cars down, #2. Come up with some sort of speed arresting equipment, #3. More flame retardant chute material.
If I was a betting man, I'd say that they will be working on a whole new set of rules to slow the cars down. Limit compression ratio, smaller superchargers. They should lower the max diplacement also, IMO.
07-13-2008, 12:53 PM #45Senior Member
- Join Date
- May 2007
One possibility, make the tires narrower.
Can have all the hp in the world, but if the tires break loose on the launch... = less speed.
Many forms of racing limit the tires to keep the cars slower and cost under control.
A good parallel is what NASA went through after the shuttle blew up on launch. How exactly do you shut the engines down safely and get the pilots out alive. Fire bad.
Once that baby is lit, stand back, it's going some where, fast.
Ultimatly I think the cars are going to have very sophiticated on board computer systems that monitor everything including the chassis and tires. When a signal is given of imenent failure, safety procedure will be auto initiated shutting down systems in the right order.
It will be a techinical marvel, given the time required to identify a problem (know what to look for) , formulate action and act.
Truely, a technical marvel.
This will seperate the proverbial men from the boys in this game.
One thing is for sure, there will be additional technical failures. It is the nature of the beast, and the level they are runing at, unavoidable.
07-13-2008, 06:22 PM #46Senior Member
- Join Date
- Dec 2006
It's easy to say make the tracks longer, but as stated not all tracks have that luxury. And if they are forced to find land elsewhere, that isn't always an option either, especially in economic times like these. Not to mention, few people want a noisy track in their backyard.
07-15-2008, 11:18 AM #47Junior Member
- Join Date
- Jul 2008
- Montgomery, NY
First post here Hi all.
Good points involving these problems we experience in the NHRA racing community.
I am involved in Drag racing and am currently working on completion of a very fast Dragster. I have gone down alot of the tracks on the east coast, less then 8 seconds each time. I have two children and I do everything I can to satisfy my desire for speed to be safe as possible. I help with the fabrication in our shop. My partner is certified to weld. We are in the tail end of finishing his car which is a ProMod. He designs the chassis himself and welds them up.
His designs, and tube placements, thickness and techniques go above and beyond what NHRA deems legal. Again we have children and will practice above and beyond minimum requirements.
See there are several real world problems with suggestions on how to correct failures on the track.
Example: Put a back up chute on car! Wont work, why bye time the backup chute is deployed you are out of track.
Put fuel shut off after engine failure. Wont work, why bye time you shut the fuel off if the engine is vented in any way the heat from the engine will ignite it. Nitro burns at I think 6500 degrees.
I think we have pretty dammm good fire suits to prevent life threating burns.
As far as chute deployment on a funny car they WILL deploy once the body comes off of the car. The chutes are mounted on the body, the rip cord is mounted to the car. Simple body leaves, rip cord stays, chutes deploy.
The biggest problem with chute failure is the damm debris tearing into the blossoming action! How do you stop that? Simple eliminate the debris.
The (greatest) problem any driver sees is the sudden stop!
See I choose to drive a red dragster (Rear engine dragster) because I learned from Don Garlits when he experienced clutch failure and tore he legs up. While in the hospital he designed the RED so he can race again.
The real problem is slowing the cars to a safe stop. Other racing bodies have taken action in there arena with movable barriers.
It is sad that tombstone technology is usually what it takes to be safer.
07-18-2008, 09:20 PM #48Member
- Join Date
- Jun 2005
- Nesconset NY
07-19-2008, 12:42 PM #49Senior Member
- Join Date
- May 2008
- Belle Plaine Iowa
I have to agree wholeheartedly with Misteryez. I too drive a RED, although much slower. I believe that too many of the rules are set by individuals that have never travel down the racing surface in anything other than a golf cart. Many of the suggestions here are also by people whose only connection with racing is TV. Give us any set of rules and we will figure out how to go faster than the guy in the other lane. That is what is required to win races. Do you really want to see racing scripted like WWE? Well at least it'd be safe.
07-23-2008, 07:26 AM #50Senior Member
miller dynasty 350
- Join Date
- Jul 2007
- Southern NH
miller spectrum 1000