http://roadking.com/2012/12/fine-tuning-a-favorite/ For the Professional Trucker Tue, 21 May 2013 12:47:53 +0000 hourly 1 http://wordpress.org/?v=3.5.1 http://roadking.com/2012/12/fine-tuning-a-favorite/comment-page-1/#comment-8955 Hugh Sutherland Mon, 28 Jan 2013 19:47:36 +0000 http://roadking.com/?p=7256#comment-8955 Hi Paul, thank you for getting back to me on this one as it is very interesting subject that could draw attention to the ROI on equipment to reduce the air drag coefficient (ADC) of 18 wheelers.
There is really one one method to measure the ADC and that is in a wind tunnel. The next issue is to record over-the-road-speed on the routes this vehicle is most likely to use and total the amount of time the vehicle exceeds 40 miles/hr. The difficult part is that it is only the level/low gradients that matter as test kits actually work in reverse when the vehicle is negotiating a down grade. So the actual number of hours where the vehicle is drawing power above 40 miles/hr is the critical issue. It probably only amounts to less than 30% of the total trip distance. Whatever fuel savings that are made are always questionable as additional power is quickly turned into a higher average road speed which negates the fuel savings created by the aerokits. So fuel savings are mainly superficial but the visual impact may well be worth the investment, especially among owner drivers.

]]> http://roadking.com/2012/12/fine-tuning-a-favorite/comment-page-1/#comment-8812 Hugh Sutherland Thu, 24 Jan 2013 07:42:54 +0000 http://roadking.com/?p=7256#comment-8812 This is only very good new for truckers,however, how many miles does it have to cover to get a payback on the aero kit?

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