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Generators / Re: st generator fan replacement
« on: September 08, 2009, 01:02:47 PM »Hi
I have a ST-12 generator head that gave up the plastic fan. Does any have any ideas were to find a replacement?
The generator has about 2,000 hours operating time in a approximately 90 to 100 F ambient temperature. From the breaks, it looks like it may have been cracked originally and I did not notice during the initial tear down. I do not believe I cracked it during assembly.
Has any one used external cooling fan to cool a generator? What do I need to look for?
Any help would great be appreciated
Sara
+1 on the motor repair shop - they should have something that will fit or easily be modified to fit. It wouldn't be hard either to make a "plenum" from sheet metal around the cooling holes on one end and rig up a 6" muffin fan to pull air through the head, but that's just another failure looking for a place to happen.
I would be suspect of ANY plastic part on a Chinese anything. The plastic is of usually very low quality and over time (and doubly so with heat and/or sunlight) shrinks, gets brittle, and with any sort of continuous load such as a shaft fit, will crack and fall apart. GOOD plastics, such as glass reinforced nylon, are incredibly strong and would be fine for the job.