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HomeAircraftHelicopterCompass Knight 50 ODIN 90 › Edit: One way bearing issues? Main gear not engaging, etc
05-01-2010 03:48 AM  8 years agoPost 1
dchekas

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Farmington, CT

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UPDATE: Allright, so I got the new main gear. But this was not my issue it seems.

I start the engine up, and get up to a high idle so the clutch engages. The main gear spins, however, it does not engage the main shaft. The gear appeared to spin for 2-3 seconds, then suddenly stop, as if the one way "caught" the main shaft. I was holding the rotor head, so it would struggle to turn, then it would start spinning again.

So, as I'm replacing the one way, I notice that on the new one, it will not "lock" unless the auto rotation sleeve is all the way down. However, when installed, it doesn't look like the sleeve slides all the way down.

Is this behavior common? Should the one way bearing only engage the auto rotation sleeve when it is full inserted? I would think it would grab as long as some part of the sleeve had gotten inside the one-way.

Thanks

Does anyone else have significant clutch bell play on their Knight 3D?

I've been having some trouble with a slight tail wag. One of the guys at my field noticed. while the helicopter is idling on the ground, that there's a "bump" where the clutch seems to grab the clutch bell for a second. It was causing a slight wag, but I still flew it anyway, planning on checking it out later.

I started it today to do a flight, and the "bump" got really bad. I didn't even spool up all the way before I shut it down.

I dropped the engine, and I noticed that the side of the clutch shoes are both worn down to smooth bare steel. The clutch bell/starter shaft assembly also has significant lateral play.

Is this typical? I'm fairly certain this is the cause of the "bump" I'm noticing. It has to be in the drive train.

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05-01-2010 04:38 AM  8 years agoPost 2
dchekas

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Farmington, CT

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Well, it looks like I found the problem.

Missing a tooth on the main gear.

I guess I'm not flying this weekend.

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05-01-2010 03:39 PM  8 years agoPost 3
helinewby

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Orlando Florida

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knight 3d
At least you have located the problem. Order that gear throw some fuel in it and go spank her!

thanks C.B.

Team TSA Models, Team YS, Team Spin Blades..

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05-13-2010 09:49 PM  8 years agoPost 4
dchekas

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Farmington, CT

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Edited with new information.

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05-15-2010 03:32 AM  8 years agoPost 5
raynman

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Lyall Bay - Wgtn - N.Z

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I've broken a few one way bearings in my clutch 3D+ heli since owning.

I use to think my Align starter was too powerful??? lol....

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