| Re: Velodrome
"CowPunk" <cowpunk99@hotmail.com> wrote in message
news:1167069433.438566.203540@79g2000cws.googlegro ups.com...
>> You left out a critical detail in your analysis: it requires special
>> expertise (and perhaps special materials) to pour concrete smoothly on
>> a steep slope, and I'm not even sure it can be done if the banking is
>> 43 degrees. That's why few, if any, tracks that are less than 333.3 m
>> around are made of concrete.
>>
>
> Unless it's precast concrete panels.
>
Hmm. might be difficult to find precast concrete panels for the bends, given
the needed trapezoidal shapes.
Actually, there are more sub 333.33 concrete tracks than you think. Sandy
Sutherland's book "No Brakes!" lists 37 out of 122 tracks in France as being
concrete and less than 333.3, although the book does not say if the tracks
are still operational or even in operating shape. (as a comparison, the book
lists Brown Deer in WI, a track in St Louis, Shakopee in MN, Dorais in
Detroit, and an old, portable board track that was built in the 70's that
was stolen [1] in the book, although it denotes St Louis and Dorais as
unrideable and Shakopee and the portable track as destroyed).
I've ridden on two 250 concrete tracks in South America that were
constructed in the 90's: the Mar de Plata track in Argentina that was used
for the '95 Pan Am games. It was a very nice track. The other 250 track was
in Baranquilla, Colombia. It was brand new in '92 when I rode it and it was
horribly bumpy.
[1] This was a portable track that was used for an attempt at a revival of
the six days in the US. It was stored in several semi trailers that were
stolen.
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