|
I have a 96 F-350 class C motorhome, 25 feet, that I'll be applying some aero mods to in the next few months. These responses have convinced me also that the area of most consequence is the rear.
My vehicle is considerably smaller than Randy's so maybe it will be a little easier to fab the rear cone for testing. First up will be a lightweight removable cap so I can do some testing and see what kind of results it yields.
Does anyone know, is a rounded shape like the one shown in the diagram the most efficient, or should the sides be straight? I guess it's time to order that book on fluid dynamics.
Randy I'd be really surprised if you have any cooling issues with your boat tail in place. No matter how well you build your boat tail, it won't take much of a vacuum back there to help the air move through that massive radiator, with the huge fan. Just my opinion. If a push comes to a shove, you can easily fab a sprayer in front of your radiator that taps into your 'house' water supply, with a switch on the dash. If you get excessive heat on the occasional hill in the summer time, push the button, your radiator gets sprayed with a fine mist of water. I've done that on several RV's, it works great.
Good luck with your project, I'll be reading with great interest.
|