Travel trailer "vs" fith wheel --MPG to tow
How much difference in fuel MPG`S have you had with a bumper pull compared to the large wind resistance of a fiver? I have noticed a high fuel consumption in a head wind. Is it streamlining or lack ...
Forum Discussion
Bumpyroad wrote:N-Trouble wrote:
Dont assume just because its taller a 5er has more air resistance than a TT.
5er and TV act like a single large mass cutting through the air while TT and TV act like two separate masses with a lot of dirty air in between.
I would like to see any air flow pattern studies showing this. especially if the TT is roughly the same height as the TV.
bumpy
It's true, Bumpy. But I don't have any links to post. You could ask the aero forum at ecomodder.com.
Here is a quote from a study I just googled up about heavy trucks:
After studying overall drag, the team analysed the drag at various locations on the combination vehicles, particularly around gaps between trailers. The team concluded that the size of the gap between the lead and trailing trailer played a significant role in the amount of drag experienced by the combination vehicle, particularly at higher yaw angles.
