Quote:
Originally Posted by Who
Outside of maybe a small light fairing on the roof to shroud the AC and vent equipment along with maybe some more aero mirrors, I'd focus all efforts on keeping the weight minimized. Many aero mods could just add weight. Your frontal area is such that you should resign yourself to slowest speeds and visit places instead of driving in strong headwind situations. You may be able to benefit more FE-wise by keeping the weight low for climbing hills. Besides, you aren't aero enough to take advantage of it on the other side.  |
Not sold on this. Weight, of course, hampers acceleration and braking, but once up to speed I don't think weight really matters. Air resistance is responsible for at least half of engine load at highway speed
http://www.everytime.cummins.com/eve...Whitepaper.pdf while I'm not sure weight affects anything except rolling resistance, and even then constitutes only a small part compared to tire design (Above link, from Bridgestone). The moral, especially in an RV, is that any level of benefit from any aero mod will almost certainly outweigh the negatives associated with its extra weight in a strictly highway situation. Besides, that weight is momentum for the next hill!
