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SFI does test safety equipment, in house. They explode flywheels and test bell housings, do pull tests on belts and burn firesuits, etc..

They don't have a 68G sled, nobody does except Delphi...

Actually I believe it's now owned by freesyle motoX rider (and rally driver) "Cowboy" Kenny Bartram, I'm surprised he and his buddy Travis P. haven't subjected the "Cute Car" car to a flaming double...

OK, but..on Fri Dec 07, 2007 8:25 am:

GBaker said on NASAForums:

".....certification of test results by an independent testing laboratory. (Isaac products are RSI certified.) "
...

What is their phone number? There is none listed on the site.

What is the street address? There is none listed on the site.

BTW;

FIA Institute for Motor Sport Safety
8, Place de la...

From SAE:

"SAE Home > Publications > Papers

SAE Technical Papers

Title: Comparative Performance of Racing Head and Neck Restraints
Document Number: 2006-01-3631

Author(s):

Head And Neck Restraint System

Effective Jan. 1, 2007, NHRA will require all competitors in Top Fuel, Funny Car, Pro Stock, Top Alcohol Dragster, and Top Alcohol Funny Car to utilize an SFI Spec...

G. Baker and I agree on almost nothing, ..But if I were a scruitineer or steward (a hypothetical situation <_< ) and handed this rule, there&#39;s no way I could interpret this as saying the Isaac is...

G-force install guide:
http://www.gforce.com/pdf/harnessinstall.pdf

Schroth install guide:
http://www.schroth.com/installation-instru..._geometries.htm

Simpson install guide:...

Sanctioning bodies or clubs should not be providing references or guidance on the installation of safety equipment other than to require that the equipment be installed and used per the...

That&#39;s your theory (off set loads always higher), fine.

My theory says you still need to do a frontal test.

Everyone&#39;s entitled to their theories and opinions,but we shouldn&#39;t misrepresent...

Please stop making these false statements, :angry: or are you claiming to meet a performance specification that you don&#39;t comprehend and have not run all of the tests for?

The frontal limit is...

The seats not supposed to "absorb" energy, it&#39;s supposed to spead the load out evenly on the body. Your back needs to be held in place in relation to the chassis while the car is crushing and...

The head and shoulder supports are not "add ons" on these seats, the bases are designed for the supports (which in some cases are seperate pieces).

The seats appear to be symmetrical, and by the...

Both seats have mounting / reinforcement points in the shoulder / neck area for mounting to the cage...strong enough?..I think we&#39;re about to find out.

http://www.joieofseating.net/seat_photos/Saturday_Night_Special_Seat.jpghttp://www.kirkeyracing.com/images/seats/53000.jpg

A couple of the latest seats (mass produced) with proper lateral support...

What&#39;s generally regarded as fatal neck loads, (4,000N) at the highest repeatable level we can test at (68G), frontal and 30deg offset.....I&#39;m OK with that. There was talk from the SFI to update the...

No, the passing level for the frontal impact is 4,000N.

If the results of the first two frontal impacts are less than 3,200N, you&#39;re excused from a 3rd impact. A device can pull 3,999N frontal...

I brought up this point at a roundtable discussion last year, but was interupted by someone from the IRL who said "statistically there is no second major impact". This may be the case for Indy cars...

If you claim that your device can meet all of the impact test result criteria of 38.1, then the financial (and moral) obligation is on you to perform all of the impact tests of 38.1 and prove these...

I&#39;ve built and raced a couple of IT cars, but not since 2001. I&#39;ve been involved with the SCCA since 1980, where I started as a worker at Nelson&#39;s Ledges.

I&#39;ve been a Pro-Rally and Club Rally...

As Paul Harvey sez...The rest of the story.

1. HANS passes the offest test even with only one side of the collar under the belt.

2. They don&#39;t put those big shoulder and head restraints on...

If the device does a better job of limiting motion side to side, than forward and back, the loads will be less in an offset test...think about it.

If you&#39;re at delphi anyway, wouldn&#39;t it be cost...

The offset load is not a combined 68G frontal impact and an additional side impact, It&#39;s a 68G impact at a 30degree angle, right?

Whether the tension and shear loads were greater or less in the...