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Re: [Land-speed] Hans Device and Safety

To: "Elon" <saltfever@comcast.net>, "'land-speed submit'"
Subject: Re: [Land-speed] Hans Device and Safety
From: "Doug Odom" <dlodom@charter.net>
Date: Thu, 11 Sep 2008 14:52:23 -0700
Elon, There seems to be some confusion about the "data".   I for one was 
trying to find out if there was any "Real Data" on the G forces that LSR 
cars have experienced in their crashes. I know Indy cars routinely 
experience G Forces of 45 to 60 G's when they hit the outside or inside 
wall. We don't race Indy cars or NASCAR Stock cars or have walls to run into 
so their data is not totally useable. Drag race cars are closer to LSR cars 
in the lakester and streamliner classes and do use parachutes but they also 
have side walls to run into. Have we had any LSR crashes that resulted in a 
Basilar Skull Fracture? IMHO Each type of LSR vehicle has its own set of 
problems that need to be looked at and not a one size fits all approach.
Doug Odom in big ditch


From: "Elon" <saltfever@comcast.net>
To: "'land-speed submit'" <land-speed@autox.team.net>
Sent: Thursday, September 11, 2008 3:05 AM
Subject: [Land-speed] Hans Device and Safety


>A lot of comments have been essentially "where is the data", "what are the 
>G
> forces", etc.  If you go to the Isaac site http://www.isaacdirect.com
> <http://www.isaacdirect.com/>   and follow some of the links and watch the
> videos you will get a lot of answers. There is even a power point
> presentation of an SAE paper. The slides clearly show the forces for 
> various
> devices in a 30 degree, 50 G sled test.  If you read some of the racer
> testimonials you will get real world feedback.  You can download an SAE
> paper ($14.00) that consolidates much sled and crash test data from many 
> and
> various sources. There is not a  lack of information as so far been
> suggested.
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