On Jan 31, 12:15*am, nimbusgb wrote:
On 27 Jan, 19:20, John Galloway wrote:

At 17:48 27 January 2008, Nimbusgb wrote:

Have you noticed how the boxes on new trailers are
now square

If we're talking Cobra, isn't it just metal top - square,
grp top - curvy?

The latest square finbox I saw was on a GRP top.

I have a trailer that happily tows at 80mph and has behind a number of
tow vehicles. I am currently towing with a short wheelbase Volvo
SUV. This trailer is uniquely low, but seems to self damp when a semi
passes or the wind gusts and has an aerodynamic fin. I have always
suspected it has something to do with the fin to trailer wheel moment
vs trailer wheel to hitch moment. I have never had to play with
weights etc. The wheel placement is different than the Cobras which
seem to be more centered.

Picture at http://www.illunis.com/Files/trailer.jpg

Scott