Time for some CMP/IFU Recaps

#61

Jones,

Yes, I’m less chapped to have a “regular” racer, rather than a rookie, two cars behind me at the finish line.:laugh:

Sasha

#62

Okay, Baxter figured out a way to get our in-car video to jive with the new Web site, so I’ve got a highlight reel up at:
Video Here

Unfortunately, it’s kind of small–I’m bugging him to make it bigger–and the sound came out very soft but at the same time overblown. I’m not sure if sound event made it to the flash version that’s on the site. The first two laps are fairly uncut, after that it just goes to highlights. Don’t miss Sascha’s spin about 1/3 of the way in; that was a close one, wasn’t sure which way he was going to end up going till the last second.

#63

The end of the first video shows the flags displayed at Start/Finish for each of the caution laps.

http://video.google.com/videoplay?docid=5234401008395525043&hl=en

IFU-2:
http://video.google.com/videoplay?docid=-3989194099350613123&hl=en

Sunday Spring:
http://video.google.com/videoplay?docid=4250129311486174605&hl=en

#64

Steven540i wrote:

Steven -

Feel free to tell me to mind my own business, but…

I think your right-side net is mounted lower than it should be to catch your helmet at the center of gravity. Maybe it is the camera angle/fisheye lens?

The diagram in the CCRs shows the top strap going through the mid-line of the helmet.

I’d just hate to see somebody get hurt…

Steve D.

#65

Steve,

I noticed the same thing after I watched the video and agree with your assessment. I had already looked at the mounting straps on the net over the weekend and I think that I can adjust them to get the net into the optimum position. I certainly don’t mind you pointing this out as safety should be everyone’s top concern.

SC

#66

Steve D wrote:

from my understanding, right side nets are meant to keep your body in the seat (and from rebounding outside of the seat, especially in head restraint seats) in side/offset impacts…not to catch your head (that’s what head restraint/“halo” seats are for)…

right side nets and halo seats serve two different purposes and i’m really not sure why nasa requires having one or the other instead of just requiring right side nets in all cars…

in the video, the net looks ok to me but i dont think raising it up some would hurt…

#67

[quote]dmwhite wrote:
from my understanding, right side nets are meant to keep your body in the seat (and from rebounding outside of the seat, especially in head restraint seats) in side/offset impacts…not to catch your head (that’s what head restraint/“halo” seats are for)…
[/quote]

I’m too cheap to purchase this article by a GM Racing engineer (“Race Car Nets for the Control of Neck Forces in Side Impacts” Document Number: 2004-01-3513 Date Published: November 2004), but here’s the abstract:

Race car nets have been used for years to keep the drivers head and arms inside the structure of the race car during an accident. Recent testing by General Motors Racing has shown that a net placed near the drivers shoulder and head on the right side can significantly reduce head excursion and thereby reduce neck tension in a side impact. The reduced neck tension prevents neck injury and basilar skull fracture. The right side net also improves seat stiffness and reduces seat deflection in side impacts.

I agree with you that a halo seat AND side net seem to be the best protection. Other than making it difficult to set my helmet down, I never notice the side net in my car. And I rarely take my helmet off when I race.:stuck_out_tongue:

Steve D.

#68

Steve D wrote:

pfft, what do they know??? :wink:

#69

It’s taken me a while… but here’s some video from Sunday’s race where Sasha and I were having a little back and forth action till I decided to take a slight detour… :frowning:

http://video.google.com/videoplay?docid=-7508267835683998867&hl=en