I did salt coefficient tests up there one year when I was just messing
around. I made a test rig and I ran the test every 15 m inutes for an
entire day. The 0.66 is pretty much what I got as well, mine was 0.68.
I did find that it changed during the hday though. Satrting low getting
better then going low then getting better then as the sun went down
getting worse. It was a double hump curve. HAd something to do with
water percolation up with the heat and then druying out faster that it
could pecolate then as the wate rose, went down. SOme where I may have
the data. It just confirmed what was intuitively known.
mayf
Rick Byrnes wrote:
> Gee, it is interesting when someone actually tries to measure.
> Staggemeir and Eakers performed coastdown tests on the salt in I think
> 88 and the data reportedly was something like 0.66 with good dry
> concrete given at 1.0 Salt conditions were hard and dry. (I think)
> Physics hasn't changed in 21 years has it?
> Did I just say 21 years. Man doesn't time fly when you are having
> fun....
>
> Rick
> ----- Original Message ----- From: "Jim Dincau" <jdincau@qnet.com>
> To: "land Speed List" <land-speed@autox.team.net>
> Sent: Monday, September 14, 2009 2:51 PM
> Subject: [Land-speed] Traction at Bonneville
>
>
>> FWIW
>> This year at Speedweek my brother made a rig to drag a piece of
>> tire tread on the salt and measure the force required. He says;
>>
>>> From my testing, Bonneville traction is roughly 67% of dry concrete,
>>> which
>>
>> is the same as dry Asphalt.
>>
>> Again your mileage may vary.
>> Jim in Palmdale _______________________________________________
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