Jim
I think they went "out of fashion", They were big, heavy,
did nothing for frontal area (the biggest drag component)
and only marginally effective, if at all. Most current
trailer manuacturers simple round off the corners (top and
sides) and get the same benefit.
They did claim a reduction in side-wind and truck-passing
sway but again I think this was marginal - even though nice
for advertising. Proper weight distribution and driving
technique have much better effect.
Derek
--- jim fuerstenberg wrote:
> Does anyone know where to buy one of those aero noses to
> attached to square nose trailers?
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