Trader4, since I am going to ask this thread be deleted I decided prior to doing so I would be blunt and keep it simple for you until I do.

Somewhere along the line you did not accept the input that 'complete' and documented has nothing to do with accurate.

Somewhere along the line you ignored that leaders in a market like Flex-a-lite, who depend on the performance minded, must sell products that meet or exceed customer expectations or they go away.

Somewhere along the line you ignored input that the HP benefit of an electric fan varies by each particular application. You have ignored input that HP results not only vary by application but also by the parameters of measurement. If you want to know the additional HP available by an application the conservative answer will come from Company techs. They are well aware, racers measure the results of performance enhancements.

The problem since your initial post is you have ignored my reason for changing to an electric fan. The ONLY reason I made the change is for improved performance. If is commonly understood that performance, meaning acceleration in my case, the time it takes from point A to point B, is only a registered when the gas pedal is on the floor. If you accepted input you wouldn't be posting about daily driving. The results at 3,500 RPM or 5,500, especially of a bogus test mean nothing. In my particular application, once the tach passes 3,500 in first gear it won't be at that low of RPMs until I let off the gas. In addition, my measurement of gain is to 6,500 not 5,500 PRMs. Somewhere along the line you ignored input that when numbers are different the end result can be different so the correct numbers need to be tested for verification.

Somewhere along the line you ignored input that it is clearly a wilda%$ guess that old or junk parts perform worse or better than new parts. It is also an assumption that the BMW clutch fan performs better or worse than old junk technology. Yes, it was an old fixed fan. You assume it had more drag than a current fixed fan. Somewhere along you ignored input that you can't assume you have to verify differences.

You have just ignored clear input that the individual doing the test stated he did not understand the way a clutch fan worked so the clutch fan numbers were wrong. Somewhere along the line of your Physics education you ignored that if the equation does not prove the assumption the assumption is bogus.

"I have to admit I didn't know that clutch fans were activated by heat from the radiator; I thought it was just internally generated heat. If that is the case, then the clutch fan test is probably not valid, because the radiator wasn't hot. I would assume that the clutch fan would do worse than my results indicate with a hot radiator in front of it. I'm still not seeing a big horsepower loss though, because the fixed blade steel fan did not show a major decrease in power, and the blades look to be about the same as the clutch fan blades, although there are only five of them."


We are ignorant until we embrace input. If that is our character we become stupid. Clearly you don't have the capacity to embrace input.

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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas