R90 3D auto hub

[Maxime30]

Is this a problematic part? We are 4 guys here who just bought this helicopter, and 2 of them had the hub lock out within the first gallon of fuel. Thinking of buying the hub from Quick UK.....



Thank you!

[ShinOBIWAN]

If you search the forum then you'll see a few others have had this problem too. I remember one suggestion was to use one way bearing grease. If your still having problems then throw money at the problem and buy the QUK one.

[Kinger]

As soon as the kit hub locks up replace it with a Quick UK hub. Expensive yes (especially with the dollar being so weak right now), but well worth it. Lockups become a thing of the past.

[Lota Fun R]

I have a 60 converted to a 90, so it's got the 60 hub, I've got 5 gallons thru it doing hard to moderate 3D and it's still fine. First thing I did before I even ran it was put light "Tri Flow" oil. I used to grease the one way on my 450s and had nothing but problems, since I switched over to tri flow I haven't had any problems with any of them and they've had lots of flights.

Tri Flow.

[Maxime30]

Thank you. Ordered the QUK one.....

[Ah Clem]

In general, grease is not a good idea with these clutches. If memory serves (it has been months since I built my 90 3D), this is just another "ramp-roller" clutch. The rollers (sometimes incorrectly referrred to as "needles") need to move freely up and down the ramps. They tend to stick in grease, jamming the clutch.

As stated by Lota-Fun-R above, Tri-Flow is a very good lubricant to use.

[JimLerch]

Just wanted to chime in, I'm running the stock one-way, not having any problems, and use Tri-Flow oil for lube.

Just wondering if there might be a trend being established?

[Maxime30]

Just got and installed the QUK unit. Wil try it this week-end.



Thank you for the ideas.