dougweil
Well Known Member
Greetings all:
I really need to increase the fresh air ventilation in my -4. Right now I am taking fresh air off the back baffle and running it through Van's mixing box into the cabin. Plenty of fresh air when in the "cold" mode, but since the air flows through the top of the cowling first, it is about 10 degrees above ambient. Not good on a hot day.
I want to install a NACA vent under the right cheek venting up to a fresh air eyeball mounted under the right lower portion of the panel. I have a fair amount of experience in knowing that there are a lot of weird pressure areas around the RV-4 cowl and canopy. Have any of you mounted a NACA vent in this area on the RHS?? Does it work OK???
BTW, I have one of Larry Vetterman's little rotating scoop things for the rear seat pax and it works very well on the RHS of the canopy skirt. But mounting a similar vent for the front pilot is useless (I had one located here on a previous RV-4 and it sucked air out!!)
Thanks
Doug Weiler
N722DW, 200hrs
I really need to increase the fresh air ventilation in my -4. Right now I am taking fresh air off the back baffle and running it through Van's mixing box into the cabin. Plenty of fresh air when in the "cold" mode, but since the air flows through the top of the cowling first, it is about 10 degrees above ambient. Not good on a hot day.
I want to install a NACA vent under the right cheek venting up to a fresh air eyeball mounted under the right lower portion of the panel. I have a fair amount of experience in knowing that there are a lot of weird pressure areas around the RV-4 cowl and canopy. Have any of you mounted a NACA vent in this area on the RHS?? Does it work OK???
BTW, I have one of Larry Vetterman's little rotating scoop things for the rear seat pax and it works very well on the RHS of the canopy skirt. But mounting a similar vent for the front pilot is useless (I had one located here on a previous RV-4 and it sucked air out!!)
Thanks
Doug Weiler
N722DW, 200hrs