tks
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| posted on 11/4/06 at 10:55 AM |
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Foam out tube in..
i personally don´t confirm the fact that
1) We are light sow lateral movement is easy==> because of the fact we are light and we have wide tires we are as sticky as possible!!!
2) We use the othercars crush zone, sow only problem for ''Tree'' crashes.. I´m sure we will be better of with 2 crushzones
who crus in each other...
also i don't see the fun of foam time crushzones...
Every crush zone has an effective working speed! foam would be helpfull bij 10Km/h but not by the more meaningful numbers.
Sow wee need to desing a crushzone wich collapses at 50Km/h..and wich collapses more difficult at 40km/h...
We need to win tenth´s of a second..not
thousands of it...
If we look at the front side of the hell fire car we see it was havily deformed i would call that the crush zone!
and in fact its desinged as rigid as possible.
Sow what i want to say is foam out Tube In.
Best bet is to drive with our six sense..
and be aware of the tipical problem area´s.
wich are the area´s where people think they are haveing preference but they don´t.
Regards,
Tks
The above comments are always meant to be from the above persons perspective.
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NS Dev
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| posted on 11/4/06 at 11:01 AM |
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The foam helps a suprising amount as under compression it progressively spreads the load into the surrounding structure.
As a "catch-all" solution that doesn't involve calcualtions etc it is quite effective......
still won't save you in a crash but might lessen the consequences.
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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JB
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| posted on 11/4/06 at 06:03 PM |
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Roll Cage Padding
Pipe insulation will not help in an impact as stated.
My test to see if padding is any good is if I can punch it with my fist. It should not hurt!
Foem blocks are used a lot in doors of production cars to reduce occupant injury values.
John
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locostv8
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| posted on 28/4/06 at 06:09 AM |
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Something like this cage from Westfied would go a long way.
http://wrangler.rutgers.edu/gallery2/v/7slotgrille/hssss/
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tks
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| posted on 28/4/06 at 06:13 AM |
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noise
think the foam is more used to
dappen things like noise
and to give weight to the cars door...
maybe weight isn´t the right word,
i mean to say to have it full not empty..
Tks
The above comments are always meant to be from the above persons perspective.
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MikeR
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| posted on 28/4/06 at 08:17 AM |
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you mean stop resonance?
Foam, of the right kind, is excellent at absorbing damange. Just think about polystyrene - very weak in lots of situations but great at absorbing
impact.
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MikeRJ
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| posted on 28/4/06 at 09:35 AM |
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Most modern plastic bumpers have a foam lining to absorb impacts, the plastic shell pretty much shatters when hit hard so does virtualy nothing for
protection.
Sticky/wide tyres also have little bearing on the outcome, in an impact by far the main force will come from the intertia of the car rather than
simple tyre friction. This is a double edged sword though, a light car will tend to start moving very early in the crash, potentialy helping the
structure to protect the occupant. The downside is that the occupants will undergo a higher acceleration than they would in a heavier car, possibly
adding to injuries.
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