Thanks, everyone. I think I got it, if you still want a little more explination for 2 what I was saying is is I want to test a say 1/12th scale model of a car that would be going 100km/h, do I test it at 100km/h or does the speed of the wind change? LIke to 1/12th of that or does it need to be...
I am building a small wind tunnel, and I have a few questions about it.
First: The Fan I am using produces 800cfm and is 12'' in diameter, I am going to narrow it down to 6''. The calculated wind speed that I got was 74.5km/h. Can anyone back me up on this?
Second: When I use scale models...
If you would like to get accurate power information without a lot of hassle, I would recommend finding someone in you are with a power meter on their bike. As you discussed in the other post, a powertap would work well. I am actually a competitive cyclist on my way to try to go pro. I just...