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HomeAircraftHelicopterHelicopter Main Discussion › 134 PTFE Dry Lubricant
04-30-2017 02:09 AM  18 months agoPost 1
HeliOCD

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San Diego, CA

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Has anybody tried this on there heli?
If so, good or bad..

https://www.walthers.com/micro-fine...ubricant-w-ptfe

Its all earth!

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05-12-2017 08:35 PM  17 months agoPost 2
Dr.Ben

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Richmond, VA, USA

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I wouldn't go near that stuff for or near bearings. Relatively to the clearances between balls and races, the PTFE particles are like sand. Years ago Ron Lund found some PTFE containing grease that he "thought" was going to be the cat's ass for use with the Greaser. After doing a few bearings and having them become notchy as hell, he realized it was the teflon particles that caused the problem.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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05-13-2017 01:44 AM  17 months agoPost 3
EEngineer

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TX

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Have you used Tri-Flo?

It's PTFE based....

Logo 600SXs, 800XX, TDR IIs

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05-13-2017 05:32 AM  17 months agoPost 4
Dr.Ben

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I don't use an suspended fine particle lubricants in bearings. Triflow at least has the particles in an oil base, thus making it acceptable to many. I don't think you'll find any bearing mfg anywhere that uses a teflon based product for grease in their bearings. Show me the grease specs from the bearing mfg if you find an exception.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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05-13-2017 06:36 AM  17 months agoPost 5
EEngineer

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TX

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Boca bearings.....

No big deal, though....

Is it remotely possible that Ron's issue could have been other particles in addition?

Perhaps now days the grease is of better grade than that of years ago?

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05-13-2017 05:24 PM  17 months agoPost 6
Dr.Ben

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Perhaps, but it wasn't that long ago. The variable may be the size of the PTFE particles, but I would sure as hell check on a sacrificial bearing before commiting to use on everything on a model. It would be a bitter pill to end up with an entire driveline of gritty bearings.

Ben

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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05-13-2017 07:42 PM  17 months agoPost 7
EEngineer

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TX

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"entire driveline of gritty bearings."

LOL.....good one....

Or a "conga line of gritty bearings"....

I wonder what's in this "Dry Fluid Extreme"?

Can't seem to find what's in it...

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05-14-2017 02:04 AM  17 months agoPost 8
Dr.Ben

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Richmond, VA, USA

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I think it's​ some kinda of proprietary wax-like material in a solvent that smells like isopropanol. From a lot of firsthand experience, it definitely does not make bearings gritty.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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05-14-2017 03:25 AM  17 months agoPost 9
HeliOCD

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San Diego, CA

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When i put some on my finger it is not gritty whatsoever. It is very slippery. Even after i rinse my fingers off you can feel it. PTFE is so slippery that insects cannot get a grip and tend to fall off. For example, PTFE is used to prevent ants climbing out of formicaria. Just have not tried it on my heli yet.

Its all earth!

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05-14-2017 06:23 AM  17 months agoPost 10
EEngineer

rrProfessor

TX

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Geckos can't stick to it either....

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05-14-2017 07:06 AM  17 months agoPost 11
HeliOCD

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San Diego, CA

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Geckos can't stick to it either....
And Geckos use strong van der Waals forces, molecular attractions that operate over very small distances. Scientists are trying to use their discovery to make wall-climbing robots and design materials that stick to dry surfaces.

Now i know how to stop Geckos and those pesky wall-climbing robots in their tracks.

How the mind wanders....

Its all earth!

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05-14-2017 06:16 PM  17 months agoPost 12
EEngineer

rrProfessor

TX

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I hate wall climbing robots....

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05-14-2017 07:30 PM  17 months agoPost 13
da_man

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Central NC

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I don't think you'll find any bearing mfg anywhere that uses a teflon based product for grease in their bearings.
I make teflon coated bearings for aerospace. It is a 100+ million dollar division for the company. Major aerospace companies use them on the wings.

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05-14-2017 11:20 PM  17 months agoPost 14
HeliOCD

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San Diego, CA

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Ok... I did some tests. PTFE sucks for bearings.. At least the powder kind in my first post. I tried it on one of those fidget spinners. Not a cheap one. It free spins about 4 minutes. After the PTFE, gritty slow spinner...

Cleaned the bearing and used reel butter gearing lube. Which is actually very thin oil. Spins great. So no i wont be using PTFE on my helis. Glad i tested first. Nice thing using those spinners as a test platform is you can see subtle changes depending on lubricant being used. Also tried ceramic bearings with same ill effect.

Its all earth!

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05-16-2017 12:43 AM  17 months agoPost 15
Dr.Ben

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Richmond, VA, USA

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I figured that would be the case. Glad you tested it first.

There is a big difference between teflon coated bearings and putting teflon particles into the the tolerance space between the balls and races either as a dry powder or with a teflon based grease.

Bottom line is test carefully before you use it on a bunch of bearings. The OP tested first and saved himself a lot of money and R&R.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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