Electric fan?

There is no way to give an intelligent answer without more basic information.

Engine? HP? Model of truck? Model year? Trailer type? Normal routes? Average weight?

Without that info everything is a WAG.

 

Not truck related but in the high performance street/strip world the Lincoln Mark VIII fans are pretty sought after due to the size and cfm. They are a 2 speed single fan set up around 18X22 and move 4500 cfm. The shroud which is the big factor in any setup is able to be adapted to fit in a variety of cars. Wonder what it would take to design a setup like this only much bigger for a truck or if it's worth it. I would think a good size brushless motor of some sort to drive it.

 

He didn't......I did

 

Mmmmmm
Yeah I thought this was just discussed.

I guess rather then use the search function we get to hash it all out again .

 

The hot spot in the fins is from lack of airflow. With four smaller fans per say there is no way to keep from loosing some surface area of airflow around the edges of each fan. The coolant isn't able to disapate the heat as efficiently due to loss of airflow. Same principal as bent fins due to a pressure washer, sure the more that are bent the worse it is. I do agree the shroud and blade angle are key. Another thing to consider CAT put electric fans on there high track dozer A/C evap cores. When you hold a factory motor beside an aftermarket there is no comparison. Once a summer you will install a set due to the jar of daily life. I realize a truck isn't a hightrack dozer but it isn't a passenger vehicle either. I feel like it is possible but at what expense is the question. Something was said in the earlier thread about the fans NASCAR uses. No telling at what they cost or how long they last. Gotta love corporate sponsors. Lol.

I also realize we all use our trucks differently. My bunch my be hooked to a pott in west Texas today, hauling corn out of Mississippi tomorrow and pulling peanut hay on Saturday. I want to know my engine is going to stay uniform temp like it should. Hot spots/cold spots wreak havoc on a block. Although if you were to come up with something that works well I would almost bet you could quit this trucking nonsense and retire.

 

Spyder, I had the same thought but just on the ac condenser to keep the main fan from cycling when idleing and in the winter my old isx even on the coldest nights the engine would heat up enough the trigger the fan. I thought 2 small fans in front would work well but never tried it. I have often wondered why they have to make the fan so loud. The 06 volvo I had for a short time wasnt very loud. I liked that one.

 

I don't think you'll find an electronic fan(s) that will work. If there was something out there that was feasible don't you think the oem's would be using it? After all, they're all out to make the most fuel efficient truck. And an engine fan when on eats a lot of fuel. They even have two speed fans available now.