"Ram Air" doesn't have much of an effect till you exceed 100 mph. I've heard that some jet engineering manuals don't start to factor in "Ram Air" effect till 120mph or so.
Air speed, not ground.
Btw I had some problems this weekend and forgot to grab the turbine housing, I'll see about getting it to you sometime soon.
Air speed, not ground.
This project doesn't seem like it would be worth the time to me. It would be very hard to measure the gains IMHO.