does a pusher fan + dead bugs=imbalance situation?

[jerry S]

I have been giving serious consideration to putting a pusher fan in front of my radiator but I am wondering if a high speed fan could be thrown out of balance because of the presence of dead insects on the fan blades. I was looking at the front of my radiator and I noticed a lot of dead bugs. If I hit a grasshopper or something and it ends up on one of the blades, would I have an imbalance situation?

 

[ozstang65]

I suppose it's always a possibility, although I've never heard of it happening. I think a 'puller' is more efficient if you can get it behind.

If you do get one for in front, don't forget to reverse the blades.

 

[jerry S]

I suppose it's always a possibility, although I've never heard of it happening. I think a 'puller' is more efficient if you can get it behind.

If you do get one for in front, don't forget to reverse the blades.

I have 3 inches between the radiator and the pulleys. I can fit a 2.5 inch puller fan rated at 1600 cfm behind the radiator or a 3 inch thick pusher fan rated at 2500 cfm in front. Even if a puller is more efficient, I think the extra 900 cfm up front still gets me more air flow through the radiator. Do you concur?

 

[C0V3R]

The CFM rating is measured with no interference, so the numbers are not directly representitive of the real world.

The question is how much more efficient is a puller than a pusher, and how many amps do you want your fan to pull.

 

[latamud]

I had my pusher lean into my radiator at around 80 mph last summer driving through Phoenix.

 

[jerry S]

The CFM rating is measured with no interference, so the numbers are not directly representitive of the real world.

The question is how much more efficient is a puller than a pusher, and how many amps do you want your fan to pull.

I have a PA Performance 150 amp alt so I am not too terribly concerned about how many amps the fan draws.

So how much more efficient is a puller compared to a pusher?