A few days back, I listed a suitable replacement fan for my squealing
Orion II heat sink fan. I said that the replacement fan was a 60 x 25 x
60 mm unit. I was wrong: it's a70 x 25 x 70 mm unit. I bought mine from
Mouser (because they're close to me) for $25 shipped, though you might
find it cheaper elsewhere. I got a ADDA AD0712MB-A76GL-LF 3800 RPM ball
bearing unit as it was quieter than the other one Mouser listed.
Kin N5OP
On 5/13/2019 2:01 PM, Stuart Rohre wrote:
Kim had a great suggestion, which eases the application of new
lubricant to heat sink fans.?? Tilt the radio such that the central fan
bearing is pointing UP, before you heat up the fan to suck in new
lubricant on the cool down step.
The Fans at Mouser are so good and reasonably priced, that getting a
new fan overnight is a most time saving step. Match the overall
dimensions with the old fan.?? The new fans have a ball bearing model.
I have done the fan rejuvenation a number of times but last few
timees, I bouight new fans, and also rejuvenated the old one. That
way, I have plenty of spares for future use.
Stuart Rohre
K5KVH
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--
Kim Elmore, Ph.D. (Adj. Assoc. Prof., OU School of Meteorology, CCM, PP
SEL/MEL/Glider, N5OP, 2nd Class Radiotelegraph, GROL)
/"In theory there is no difference between theory and practice. But, in
practice, there is." //??? Attributed to many people; it???s so true that it
doesn???t matter who said it./
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