Chris Duncan
Supporter
Re: progress...
In order for the twin nostril cover to be most effective it has to seal completely at the radiator. Otherwise some of the air that comes in the front gets into the front clip area and pressurizes it. This can even cause lift at high speeds.
To facilitate this seal the electric fans are placed on the front of the radiator and the guards are not used. You can't get your hand in there anyway if you have a rock screen on the front entrance. All the guards are doing is obstructing airflow and adding weight. Many factory passenger cars don't have guards enclosing electric fan blades, although they do have warnings to keep your hands out. I guess they assume people will follow directions.
Fan shrouding is not an issue especially with two fans like this, a small block with this load even with AC will never push it enough to overheat. If you look at the design of the fan blade also it includes an outer band attached to the blades which in a way acts as a shroud.
The only time your going to get high loads is at high speeds and airflow overrides fan speed at something like 30 mph. so the fans aren't doing anything above that.
In order for the twin nostril cover to be most effective it has to seal completely at the radiator. Otherwise some of the air that comes in the front gets into the front clip area and pressurizes it. This can even cause lift at high speeds.
To facilitate this seal the electric fans are placed on the front of the radiator and the guards are not used. You can't get your hand in there anyway if you have a rock screen on the front entrance. All the guards are doing is obstructing airflow and adding weight. Many factory passenger cars don't have guards enclosing electric fan blades, although they do have warnings to keep your hands out. I guess they assume people will follow directions.
Fan shrouding is not an issue especially with two fans like this, a small block with this load even with AC will never push it enough to overheat. If you look at the design of the fan blade also it includes an outer band attached to the blades which in a way acts as a shroud.
The only time your going to get high loads is at high speeds and airflow overrides fan speed at something like 30 mph. so the fans aren't doing anything above that.
