Aeroshell 5 out of production?

[jcarne]

Soooo... anyone know if this stuff is out of production? Spruce has an indefinitely back order and I can't find it in stock just about anywhere. Would really like to lube my Hartzell with it and not #6.

[rv8ch]

Originally Posted by jcarne

Soooo... anyone know if this stuff is out of production? Spruce has an indefinitely back order and I can't find it in stock just about anywhere. Would really like to lube my Hartzell with it and not #6.

I dropped an email to Hartzell asking for advice last week, but probably won't hear from them for a few days. There must be some grease that is compatible.

[bjdecker]

Aeroshell 22 might work. Check the MSDS's

[rocketbob]

I wont use Aeroshell 5 in my mower let alone an airplane. I have dried up old stock tubes tubes that I've thrown in the trash. Greasing Hartzells ever year causes more problems than it prevents. Pushing fresh grease in increases the likelihood of separated oil getting past the teflons and big orings. Radial movement is less than 1/8" at the bearing balls so its impossible for fresh grease to make its way to the interface between the bearing balls and the races.

[rv8ch]

Originally Posted by rocketbob

I wont use Aeroshell 5 in my mower let alone an airplane. I have dried up old stock tubes tubes that I've thrown in the trash. Greasing Hartzells ever year causes more problems than it prevents. Pushing fresh grease in increases the likelihood of separated oil getting past the teflons and big orings. Radial movement is less than 1/8" at the bearing balls so its impossible for fresh grease to make its way to the interface between the bearing balls and the races.

Bob, do you have a recommendation? Thanks.

[rocketbob]

Originally Posted by rv8ch

Bob, do you have a recommendation? Thanks.

Yes, dont grease. Its pointless. There's no way to force old grease out without complete disassembly. There is so little movement that none of it really matters. I would be willing to bet a Hartzell would work just fine with zero grease.

[DanH]

Originally Posted by jcarne

Soooo... anyone know if this stuff is out of production?

If so, good riddance.

[jcarne]

Originally Posted by DanH

If so, good riddance.

Care to elaborate Dan? I haven't been around the block nearly as long as you guys.

[bjdecker]

Originally Posted by DanH

If so, good riddance.

I'm sure there's a ton of data behind that sentiment...

[bjdecker]

Originally Posted by rocketbob

There's no way to force old grease out without complete disassembly.

Sort of -- when the mineral oil separates from the paraffin, it has a nasty tendency of seeping past the blade root seals and into the slip stream; ending up on the windscreen, airframe...(sigh) the chunky paraffin is left behind.

Disgusting "pimple popper" pictures attached for reference.

edit: this is Aeroshell 6 after only 6 months of disuse. (airplane was down for paint...)