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Old April 11th 08, 11:13 AM posted to rec.aviation.soaring
Dan[_4_]
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Posts: 50
Default Trailer wind deflector

On Apr 11, 4:42*am, Cats wrote:
On Apr 9, 8:19*pm, Adam wrote:





More trailer-talk....


I have a Minden-Fab / Scheder-style trailer and tow with a 200hp V6
station wagon. The front "barndoor" of the trailer is about 1.5 to 2
feet higher than the roofline of the car. The whole setup feels draggy
on the road. 65 mph is about the limit before I feel like I am abusing
things. I get about 17 mpg with the trailer, 26mpg without. I plan on
a 3000 mile round trip this summer and with gas where it is, a few
more mpg would be nice.


I was wondering if it would be worth fitting a deflector to my luggage
rails near the back of the wagon to reduce the drag and increase my
mpg a few points (and my L/D would also go up too!).


I will can fabricate something from stainless sheetmetal that would
mount to my Thule rack. Any tips or guidelines on the form of such a
deflector are appreciated. Or is this a bad idea?


Speaking as someone who lives in the UK, it strikes me that a change
of tow vehicle could produce major fuel savings all the time. *I mean
- 26mpg at best! *My car is perfectly capable of towing my glider in
it's trailer at UK legal speeds, without the trailer it does almost
50mpg, with it it drops to low 40s. *Surely similar vehicles are
available in the US?


Don't forget the US gallon is 3.78 l, and yours is 4.54 l per Imperial
gallon... This explains some of the apparent disconnect.

Some of us do tow with Jetta TDIs and get reasonable mileage.
Dan