kaydeejay wrote:
ah64id wrote:
I thought that was pretty common knowledge? 5ers of the same weight/length always seem to do better on fuel than their TT counterparts.
This is news to me!
Having worked (a little) with aerodynamics in the auto industry I would have to see some side by side tests to completely accept your reasoning.
So while I'm not going to argue with you I'm not totally buying in either.
Not an engineer, (didn't even stay at a Holiday Inn Express last night) but here's real life anecdotal experience. We previously owned a HitcHiker ll/LS that tipped the scales a little over 12K loaded for travel. The HH was pretty much a flat front cap and well over a foot taller than our current bumper pull TT (Jayco WhiteHawk 27DSRL 7500 lb max weight). Both trailers towed with an '05 Ram 3500 at no greater than 60 mph. To date, I've not seen a difference in fuel mileage towing the TT over the fifth wheel, despite the huge difference in weight. I've concluded the aero drag with the WhiteHawk must be greater than the fifth wheel, but who knows...........