Do Flex fans add horsepower?

Do Flex fans add horsepower?

The biggest advantage to flex fans is their ability to pull more air through the radiator at an idle than a clutch-operated fan. The flex fan aids in idle or slow speed operation, however, they rob more horsepower than any other style of a fan at high RPMs.

How many watts does a radiator fan pull?

The motors that range from 130 to 225 watts; motor power determines the amount of cubic feet per minute (cfm) of air a fan delivers. The heat generated from stop-and-go-driving, racing, and towing can kill engines.

Is a flex fan worth it?

For high rpm use, flex fans are considered an upgrade over clutch fans. They can be a good choice for modified vehicles turning 6,000 – 8,000 rpm. Advantages include: They move more air for better cooling.

Is push or pull fan better?

A Push configuration is more efficient in cooling when its blowing cool(er) air from outside the plenum through a radiator. A Push also makes your build louder. In Pull configuration the fan or fans are drawing an air stream out of the radiator.

Can you use an electric fan as a pusher?

If you have space issues, you can use an electric fan in a pusher configuration in front of the radiator. Some fans can be used as either a pusher or puller. Shrouding.

What makes an electric fan a good fan?

Electric fans rely on electric energy from the battery and charging system. But in cooling, what makes a good fan is optimum airflow for cooling with minimum energy consumption (for maximum engine power and fuel economy). An electric fan completely removes the mechanical load of spinning the fan from the engine.

How does an electric engine cooling fan work?

Electric cooling fans operate like any other electrically-powered accessory on the car. Its source of energy is the electrical system of the vehicle as supplied through the battery in conjunction with the alternator.

Which is better a puller engine or a pusher engine?

Puller engine layouts provide superior cooling flow to piston engines thanks to unobstructed cooling intakes. Aerodynamically, puller designs allow designers to take advantage of the propeller’s thrust effects to reduce wing and tail sizing requirements.

What’s the difference between pusher and puller fans?

Electrical fans can either push air through the radiator or pull air through it. A pusher fan sits in front of the radiator. When a vehicle is moving, a pusher fan can obstruct airflow due to its positioning in front of the radiator. A puller fan on the other hand sits right behind the radiator.

How big of a fan do I need for a puller fan?

If your cross flow is smaller than 21” in length, one larger fan will work best for a puller fan. For the best cooling efficiency, use a fan that is 3 ⅜” wide when there is room. If core is larger than 22”, then two small 11” or larger can be used with a shroud.

Can a pusher fan be used in front of a radiator?

The majority of automotive fans are set up in the puller configuration to pull the air through the radiator from the grill opening area. This keeps the fan out of the natural airflow path into the radiator. If you have space issues, you can use an electric fan in a pusher configuration in front of the radiator.

Can a pusher fan obstruct air flow?

When choosing an electric fan, here are a few factors you should be aware of: Electrical fans can either push air through the radiator or pull air through it. A pusher fan sits in front of the radiator. When a vehicle is moving, a pusher fan can obstruct airflow due to its positioning in front of the radiator.