Footwell vent
- Thread starter Gtstorey
- Start date
I got the vent ducted to the footwell area and drove it this weekend. I'm not sure that the results are worth the effort. On one hand, there doesn't seem to be a lot of positive flow into the footwell. On the other, I think it did change it from being a negative pressure area that sucked in hot air from the radiator. We'll see what it does when temps climb.
My hood vent is probably a little small and the air flow must shoot over it. The duct is only 4" diameter and probably needs to be bigger. After I see how it works in summer heat, I may try to make a larger & taller custom scoop and larger duct.
I've considered using the ducts from the DF heat exchanger kit that I didn't use for trying to pull air through the side panels, but I'm not sure that area would pull cool air in.
My hood vent is probably a little small and the air flow must shoot over it. The duct is only 4" diameter and probably needs to be bigger. After I see how it works in summer heat, I may try to make a larger & taller custom scoop and larger duct.
I've considered using the ducts from the DF heat exchanger kit that I didn't use for trying to pull air through the side panels, but I'm not sure that area would pull cool air in.
I changed my mind after thinking about this a little further. I'm gonna do the route from the side metal, using a NACA duct with a vent on the end to adjust.
We built a composite aircraft, and used these same vents. On takeoff roll, it would blow your hat into the backseat if they were open, but they also took 200 mph without failing (when they were closed), so they should do fine at these lower speeds. I'll post up when i get the stuff to do it.
We built a composite aircraft, and used these same vents. On takeoff roll, it would blow your hat into the backseat if they were open, but they also took 200 mph without failing (when they were closed), so they should do fine at these lower speeds. I'll post up when i get the stuff to do it.
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Got my interest.... Gonna have to go looking for photos.
ColoradoCryptoTrader
Well-Known Member
He talks about the footwell vents in this video walk around
What did you order for the closable vents for the end of the NACA ducts?
I haven't looked to see what modification is needed, i know the little grid in the back will need to come out, but these are the ones i ordered. We used f-150 vents in our aircraft, so these are very similiar. His in the video look the same.
You can get cheaper ones, or chrome ones, etc. I wanted all black so i paid a little more.
You can get cheaper ones, or chrome ones, etc. I wanted all black so i paid a little more.
Let me know how they work, I'll probably be adding this to mine.
I did drive mine last week on a warmer day, and I think mine through the hood is doing more than I initially thought. Still doesn't have any real positive airflow, but definitely didn't feel the warm stagnate air that is usually there.
I did drive mine last week on a warmer day, and I think mine through the hood is doing more than I initially thought. Still doesn't have any real positive airflow, but definitely didn't feel the warm stagnate air that is usually there.
I don't have the hood block (footwell cover). I plan on extending the front firewall up and using rubber/gasketed material as a semi-seal. I may actually put a few vents on there too because on cool mornings like today (55 degrees) after 4-5 minutes of driving, you get warm air coming through which is a positive.
When it was high 80's and roasting sunny last week, it was uncomfortable, but wasn't unbearable..... but again, i wasn't totally sitting in traffic baking... but the heat from the radiator is no joke, even when moving. I was amazed at the difference in airflow thru the nose with traffic changes in front of me. Anybody 15 cars ahead or less completely screws the aero thru the radiator, etc. A pair of semi's in front of you at highway speeds makes you feel like you're in a washing machine.
When it was high 80's and roasting sunny last week, it was uncomfortable, but wasn't unbearable..... but again, i wasn't totally sitting in traffic baking... but the heat from the radiator is no joke, even when moving. I was amazed at the difference in airflow thru the nose with traffic changes in front of me. Anybody 15 cars ahead or less completely screws the aero thru the radiator, etc. A pair of semi's in front of you at highway speeds makes you feel like you're in a washing machine.
jayrolls
Well-Known Member
That is the exact route I have been looking into. We just pulled the hood back off and added insulation on the footwell cover. It has for sure helped with the heat from the radiator coming in the gap between the hood and the cover. Also got the engine covers on today and that helped some more. Still getting heat from the engine bay into the cabin from the gap below the covers and the chassis between the seats. Gonna try to block that with some plexi and then the naca ducts on the side panel should give good airflow.
So I played around with the vents and ducts tonight… I’m gonna try and find some smaller ducts and vents. As is it would impede too much on my big ole size 13 clutch foot.
i then thought above moving it slightly farther back…. But again the sizing of the scoop was just a bit too big. These will go back and I’ll report back with my second try.
i then thought above moving it slightly farther back…. But again the sizing of the scoop was just a bit too big. These will go back and I’ll report back with my second try.
I get around it but it’s a bit too bulky there. I figure a slightly smaller one will go in the next gap to the rear and be taller up. More directing air across the front of the seats…. Probably won’t do any good until the front is buttoned up a bit better though.
Desert Sasqwatch
Goblin Guru
Would these work? Meant for a Cobra and have a hinge mount. Might be able to adapt them to a rollbar mount?
Looks like those would be great for blocking air, but not flowing air into the cabin... the double bend to fold forward makes it a better scoop i'd think on the slingshot ones.