[TowerTalk] Prop Pitch Grease preference or recommendation

k7lxc at aol.com k7lxc at aol.com
Thu Jan 9 12:45:14 EST 2020


> After years of quality service and dependability I have my PP on the
ground and want to repack the case with the most reasonable source of grease to use to repack the so called gearbox as I have long ago forgotten what I used 15 plus years ago for this effort. Additionally any source beyond cutting out and making my own replacement gaskets is welcomed, as an experience K7NV is not receptive to providing these unless he has also reworked or rebuilt the PP in question
    Which parts do you want to grease? I don't think there was any grease used when the PP's were in original service - just some sort of oil. (My military PP manual is packed so I can't look it up quickly.) When in original service in airplane engines, the PP's were mounted horizontally but when used in ham service they were mounted vertically which would allow the oil to drip out. All of the assemblers I've ever talked to recommended using them dry - no oil - so no problem with leakage. Since the duty cycles in ham use are pretty small compared to their original use, no internal lubrication isn't a big deal. And they still last for many years.

Cheers,Steve     K7LXCTOWER TECH


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