Brian Evans asked me to post this for him - but I can't
resist adding a couple of comments.
He mentions reduction of trailer generated wind noise. Wow.
Has anyone else ever heard trailer wind noise? Maybe his
Chevy van isn't as sound proof as my Dodge van was!
He also refers to presumed improvements at the front of the
trailer. Don't forget the aerodynamicist's comment that on
short bodies like our trailers whatever small gain you
might get at the front you loose at the (squared off) rear.
Over to Brian - who is generally right - damn him!
--- Brian Evans wrote:
> Date: Thu, 06 Mar 2003 13:34:52 -0500
>
> Derek, perhaps you could pass to the list, as I am for
> some reason unable
> to do so. Something to do with a new email address, I
> think.
>
> I have a Nose Cone (http://www.nosecone.com/) that I
> added as a retrofit to
> my trailer. I have a 102" wide by 80" tall box, and the
> frontal area is
> indeed key. Adding the nose cone immediately reduced the
> wind noise
> generated by the trailer, which seemed to me to indicate
> at least something
> good, and fuel mileage seems to be a bit better. More
> importantly, the van
> seems to be able to maintain speed up hill a bit better,
> which indicates
> lower drag also. I didn't do any before and after test,
> so all this is
> subjective. The things are not expensive, so even a
> small gain will
> probably add up to a payback at some point. I would
> think that if you tow
> with a pickup or suburban, the effect would be increased,
> compared to a
> fairly tall van such as I have.
>
> I don't have a problem with side-winds and passing
> trucks, but then I use a
> proper cam type sway control and tow with a proper van,
> so I didn't have
> problems like that in the first place. I do know that 75
> mph in a 30 mph
> gusty cross-wind is two fingers on the wheel, if you're
> lazy. Vans make
> the best tow vehicles, period, as far as I'm concerned.
>
> Brian
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