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Post by katt on Jul 27, 2018 13:48:40 GMT -5
I come across this fan on ebay notice different blade design, price $25 so i wanted to confirm is it better than stock?
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Post by GrumpyUnk on Jul 27, 2018 14:02:55 GMT -5
While it may be better, the real question is will it fit? I suspect it is for a 150cc machine.
It appears that there are several blades that have a deeper 'reach' which in theory would increase airflow.
Are you having an overheating problem, or is this just 'insurance'?
tom
Just thought that moving more air does not come witihout cost. You will use power to move that air. FWIW
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Post by katt on Jul 27, 2018 15:23:45 GMT -5
Its saying 50cc in description, its more of an insurance.
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Post by dexameth on Jul 27, 2018 15:47:07 GMT -5
Yes! Those were tested by a motor builder to be 20* colder than stock after a timed run. I don't know all the specs, but I know the seller and they have been tested. I run the OKO cooling fan for the 139QMB motor and the fins are the same. Here's the science: The angle of the stock blades "throw" the air out of the fan from centrifugal force. This is the "forced air cooling". This is a low density, fast moving airflow. With the fin direction opposite the fins actually create a vacuum behind each fin drawing MORE air into the fan, and in turn still being "flung" out of the fan and across the motor. Only difference is a more dense, slower airflow to help pull more heat from the cooling fins. Unique GY6 is the seller of that fan, follow this link. |
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