Landracing Forum
Bonneville Salt Flats Discussion => Bonneville General Chat => Topic started by: RCKirby on March 24, 2015, 06:59:58 PM
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Just finished sitting down with Terry Nish and talking about the upcoming racing season.
Terry has decided to release the footage of the near disastrous run of the #998 streamliner during the 2014 World of Speed. (It's not for the faint of heart!)
In addition he talks about the plans for Royal Purple Streamliner and what he hopes will be "The Year We Hit 425mph!"
With Terry, it's always an interesting and frank discussion and I hope you enjoy it!!
https://youtu.be/a7aa_TcwhWc
Regards,
RCKirby
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Love to see it -- won't open for me.
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Ouch! Anyone else having issues with the video playing?
RCKirby
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Played for me.
What a gentleman, thanks for posting.
Don
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played for me... WOW.
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Played for me.
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Thanks...I think it's playing for just about everyone!!
Regards,
Ron Kirby
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Wow amazing driving. What a save :cheers:
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I guess my dial-up's not up to speed.
Or something.
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works fine thanks
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It worked great. Mike's time in sprint cars must have helped because that's sure what it looked like. Great save!
Pete
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WOW what a great 17. minutes---thanks Terry and RC :cheers:
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Thanks guys. :cheers:
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Wow what a ride. Thanks for sharing the link with us
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:cheers:
Thanks for making the interview available for all of us. Amazing spin and recovery. And a great interview!
Frank
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Great info. I was in the timing trailer announcing the run as it went side ways right in front of us. Mike did a great job & save. Thanks for sharing it and so others know what can happen at speed and with the damp salt. :cheers:
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Ron Main sent me this link that worked . . .
https://www.youtube.com/watch?v=a7aa_TcwhWc&feature=youtu.be
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Great clip...thanks! Helluva save by Mike, too... :-o
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intriguing to ponder to what degree the aero characteristics of the car
played into/impacted the "save"
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No flat sides, makes a big difference, Terry even mentioned this to Rick Vesco as he has designed all of the liners with round surfaces and Terry built this liner the same way.
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I would put the car shape and Mike's driving as about 50/50 for the save. That big tail fin makes a lot of force to straighten the car out and as Glen said the car does not have flat sides to trip over. Interesting watching the vid in the amount of wandering the car did before it got to the 3 mile mark. I wander if it was Mike looking for traction or the car not being stable.
A great save! and I hope that they go 450!
Rex
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RCKirby,
Thanks a million for that vid, very well made, much appreciated. I learn something everytime i watch that kind of interview!
karl
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Why would round sides be better in a spin situation? Less aero induced tipping force on a sideways moving vehicle?
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Wow! What a ride, thanks for sharing, I always love listening to Terry talk
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Extremely informative insights. The simultaneous front, rear, and cockpit video shows the progression of events quite clearly.
Thank you very much for sharing all this.
Bill D.
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Bill, welcome to the site, join us on the chat line if you get a chance. Tonite at 7:00pm Mountain time.
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Practically looks like its slaloming the 3 miles gates.
Nish, Speed Demon, Copeland. How many others got in trouble at the 3 mile over the span of that week?
Curious to know, when the steering is at full lock, how many degrees is that at the front wheels?
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I spoke with Terry last night and he said they really didn't want to do that again. :-o :cheers: Wayno
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I think 5 degrees lock to lock.Thats what the two Vesco liners have.
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Eva put up an article about how to calculate Center of Pressure (Cp) and Center of Gravity (Cg) on her new science on-line magazine Science Envy.
http://scienceenvy.com/race-car-engineering-400-mph-how-to-stay-straight-and-on-track/
It is a spruced up version of our article we posted on Landracing.com a while ago, with a few newer pictures. (We wrote this article at the urging of Tom Burkland and Rex Svoboda.)
The Speed Demon team and the Nish team have graciously come forward with their best theories of what caused their difficulties during the 2014 season. Both teams suspect that the Cp and Cg relative positions may have moved during the development of their vehicles and may be the root cause of the instability in their vehicles. We thought it would be a timely moment to re-publish the article to explain the physics behind Cg and Cp placement, since we all face these issues.
Our vehicle, the KillaJoule, runs like on rails, (so far, knock on wood) so this method for estimating Cp and Cg placement has worked for us, so far.....
Bill & Eva
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(We wrote this article at the urging of Tom Burkland and Rex Svoboda.)
Bill & Eva
Tom & Rex are true gentlemen and terrific resources! :cheers:
(TFA says: "thank god for their patience with us noobs")
karl
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While talking with Terry Nish about the response to the video, he said to go ahead and provide the link to all the raw video during the near catastrophic run.
https://youtu.be/yu_FBqYF-NM
While a lot of people will not be interested in watching raw video, there may be a few of you that are. It is being shared in hopes that anything that can be learned from this incident might be used to create a better racing vehicle.
Regards,
RCKirby
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Wow, at the 2:10 mark as he is crossing the 3 mile. Pretty sure I would have to check my pants after that one.
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I noticed that in the in-cockpit video and the exterior video, both showed the canopy lifting about 1/2" when the car got sideways. This indicates that the body shape was creating quite a bit of lift under those conditions.
Regards, Neil Tucson, AZ
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The air involving this incident is quite remarkable (300mph Air). The POV camera mounted on the side of the streamliner is a RePlay XD...it is round and securely mounted to the vehicle. The mount holds the camera very, very securely. At about the 5:10 mark the streamliner begins to get sideways. When the vehicle comes back around the camera twists in its cradle. As I mentioned before this cradle is very tight and the camera is securely held within this mount. Also the RePlay XD is round.
The amount of air it would take to rotate the camera in its cradle is unbelievable to me. Since the camera rotates counter clockwise I believe the air would need to come over the camera and then back under the camera towards the body...creating a "very" powerful vortex. I assumed that since the camera was round and fairly aerodynamic that it would be solid as a rock. I was mistaken.
I have new respect for the amount of air, the streamliners and all race vehicles are pushing through.
I can't help but believe that if a 300mph wall of air were to hit you all at once, it would do significant damage to your body.
RCKirby
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Good people.
Hope they've solved the CG problem. :cheers: