Quote:
Originally Posted by Mag
lotus stopped using these because over time it warped the hatch.
The hot air from the radiator is an issue. Just stick your hand on the roof on the highway, you'll notice the air there is quite a bit hotter than if you raised your hand into another airstream. Crude thermometer I know but the difference can be felt. I've heard of a splitter added on bottom of front of roofs similar to cup roof along the windshield top edge that supposedly splits the hot air and runs it in a different direction allowing fresh air in the scoop.
Really Really interesting post by the way. 
I am in the camp that thinks that fans is the only way to go. Either roof, the bottle neck is still at the fettle location. Even with fettling, the opening is just... ridiculous. If fans are used, just a theory but I think the non cup roof would be a better combo here. |
I have also felt the hot air that comes over the windscreen,it is from the heat of the radiators in the nose,and it is suprisingly hot.
I looked into fans a while ago,and the tiny fans that would fit don't come close to pulling enough air,pushing is not a good idea,either. the only place where fans might help on this car is when it is in traffic,but how much horsepower do you need in traffic? I am still thinking that a scoop on the drivers side "sail" panel(opp side of the fuel filler door)--or a NACA duct ---run into the stock air duct along with the roof might be the answer. It could be replaced with another gas filler door(screwed shut)if desired should the need arise. If you wanted to remove the top,you would still get air into the IC from the top scoop on the clam and the new sail panel air inlet. All of this is just mental masturbation on my part until somebody gets temps and meaningful data. Where is Jim Hall (Chaparral) when we need him?