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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › What is the proper lube for heli plastic gears
05-03-2017 01:29 PM  3 years ago
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KingCobra Heli

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What is the proper lube for heli plastic gears
What is the proper lube tube to use on helicopter plastic gear train?
I know nitro's kinda self lube with the exhaust smoke but electrics don't.

The Drylube brand is insanely expensive for a very small amount. Is this worth it?

What do you guys use?

Thanks in advance.
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05-03-2017 01:36 PM  3 years ago
Danny Calderone

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South Jersey

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Air.Signature
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05-03-2017 01:41 PM  3 years ago
Jeff polisena

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westpalmbeachflorida usa

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Keep dry and clean 'air' , putting anything on gears will attract dirt and do more harm than help .I stole it ,flew it and gave it back ;)
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05-03-2017 01:59 PM  3 years ago
Héli Suisse

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Geneva Switzerland

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True air for autolubricant plastic gear is the best. Drylube is very effective even not cheap. I've tried it on giant models with great results.
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05-03-2017 03:47 PM  3 years ago
KingCobra Heli

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Wow, so no one uses lube?

The gears don't wear prematurely?
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05-03-2017 03:51 PM  3 years ago
Danny Calderone

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no sir, just keep them clean and properly meshed.Signature
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05-03-2017 04:04 PM  3 years ago
Héli Suisse

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Yes sure. Delrin gears don't need any lubricant and if run on other same material will stand for long. It's only in a combination plastic/metal that the gears are wearing a bit more. Dirt and dust act like abrasive powder and enhance a premature wear.
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05-03-2017 05:05 PM  3 years ago
Dr.Ben

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Richmond, VA, USA

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Drylube is well worth the expense. The bottle lasts a LONG time. Judicious use of lube between pinion and maingear if you do not fly in a dirt hole eases wear. If you temp the pinion on your model before and after using some lube, the difference is noticeable. I fly off grass, so the little bit of silicone or dry lube I use between the main gear and hard coat ali pinion does not hold any dirt. For those in dusty, arid climates or who fly off of dirt, then the benefit of lube likely will not be appreciated.

Ben Minor
Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA
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05-04-2017 04:13 PM  3 years ago
KingCobra Heli

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Thanks guys
I am seeing what looks like to me premature wear on the main gear specifically (metal pinion to plastic) and was very curious as to what others were doing.

It seems to me that at least those should be lubed. Just wanted to get a collective opinion on what everyone else thinks

I do appreciate everyone's opinion on the matter.

Thanks again guys.
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05-04-2017 04:36 PM  3 years ago
Four Stroker

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Atlanta

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If the pinion is not cut correctly - and many are not - it will eat the main gear. Also if the pinion is not spaced correctly it will eat the main gear. Powdered main gear everywhere is an indicator of this.

Ask Dr.Ben who makes the best main gears.
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05-04-2017 05:31 PM  3 years ago
Peter Wales

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Orlando Fl

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Metal to metal...grease often
metal to plastic...grease once
plastic to plastic...no grease
Peter Wales
http://scalehelicopters.org
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05-05-2017 12:16 AM  3 years ago
fastrc1

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Planet Brooklyn, NY-USA

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I use Synthetic Polyolefin (PAO) Lubricant/Grease also known as M-kote EM-30L.RIP Roman Pirozek Jr.
Team Futaba USA
Team Kontronik USA
http://flysrw.com
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05-05-2017 12:46 AM  3 years ago
EEngineer

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TX

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Magic gear spray....Logo 600SXs, 800XX, TDR IIs
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05-05-2017 06:49 AM  3 years ago
Shawnlh

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Medicine Hat, Alberta, Canada

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This goes on all my plastic gears............. https://www.rotorquest.com/categori...0ml-102644.html Trex 800 Pro DFC / Trex 700L Dominator / Trex Pro 700 DFC / Blade 180CFX w/Ikon / Futaba 18SZ / RealFlight 7.5
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05-05-2017 02:54 PM  3 years ago
Héli Suisse

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Geneva Switzerland

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Metal to metal...grease often
metal to plastic...grease once
plastic to plastic...no grease
I fully agree and therefore would recommend Drylube for the second case. First I would use conventional grease for the tail gb for instance.
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05-09-2017 07:46 AM  3 years ago
Richardmid1

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Leeds, England

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In 13 years I've never replaced a main gear due to excessive wear. I don't lube the gears btw.60% of the time, it works every time!
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05-09-2017 01:40 PM  3 years ago
Four Stroker

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Atlanta

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Well that was my point exactly. I have never worn out a main gear in over 30 years of helicoptering. BUT I have seen main gears at the field reduced to powder in a few flights. 10 BHP makes a difference.

1) Gears made out of the wrong stuff.
2) Gears that do not meet the standard.
3) Pinions that are not cut properly.
4) Pinions NOT HARDENED.
5) Gears and pinions not spaced properly.

This is mainly a quality issue in both design and manufacture. A proper pinion gear has a curved tooth that takes maybe 5 CNC passes plus smoothing. OR maybe they have CNC that makes curves now ? Then it is polished and hardened. I have seen pinions made with two passes that had a ridge in on each tooth.

K&S used to sell "quiet" pinions as an aftermarket upgrade. But old pinions were a hell of a lot better - Kalt, MA, Schluter, Hirobo.
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05-09-2017 06:51 PM  3 years ago
EEngineer

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TX

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"Gears and pinions not spaced properly."

Totally agree....

That should be #1 on your list....
Logo 600SXs, 800XX, TDR IIs
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05-09-2017 06:52 PM  3 years ago
EEngineer

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TX

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Number 4) sounds like a medical issue.....Logo 600SXs, 800XX, TDR IIs
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05-09-2017 07:37 PM  3 years ago
JuanRodriguez

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The Villages, Florida

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I would agree .....medical issue.

May I recommend K Y Jelly as a possible solution???
Been there, done that and old enough to know better.....
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