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HelicopterHIROBOOther › Scoob question
06-03-2004 04:02 AM  13 years agoPost 1
Greg McFadden

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Richland, WA

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so now I am a bit stumped. I siezed up (or at least thought that I had) my split gear (the blue metal one) today, but it wasn't that, pulled it out and it works great. but then the clutch bell felt stiff, pulled everything out and now it is all free spinning fine. the fan is still tight. Quite honestly, I am bothered because I can't find anything wrong. any hints?

The silence often, of pure innocence persuades, when speaking fails

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06-03-2004 04:21 AM  13 years agoPost 2
rob_jones

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Perry, GA

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Could the clutch shoes be spread out? Or the liner come unglued?

Blade 550X, T-Rex 450 Pro FBL

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06-03-2004 04:50 AM  13 years agoPost 3
Greg McFadden

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Richland, WA

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nope, they are all fine.... friggin confusing.

The silence often, of pure innocence persuades, when speaking fails

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06-03-2004 03:18 PM  13 years agoPost 4
rob_jones

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Perry, GA

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Hmmmmm, beats me. I can't imagine what it could be. I'm really reaching here, but do you suppose that the engine could've loosened and tilted slightly? That would bind the clutch, and it would explain why it's fine now that you took it apart and reassembled it. But I would think you'd notice a loose engine when you took it apart.

What makes me think of this is an annoying habit mine has developed. Somehow after a few flights, the engine will "scoot" down and let the top of the pinion gear "fall out" of the bearing in the frames. I can tell when it happens because it makes a loud screeching sounds whenever the clutch starts to engage. Also, without the engine running, I can wiggle the clutch bell and move it up and down. I have to loosen the mounting bolts and push the engine back up. But the bolts are always tight when I go to loosen them.

Very odd. Maybe yours is doing something similar??

Blade 550X, T-Rex 450 Pro FBL

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06-03-2004 03:37 PM  13 years agoPost 5
Greg McFadden

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Richland, WA

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could be, happened after I did an auto where I just skidded the tail blades on the ground a bit (no damage to them at all, ground real forgiving, time to put the tail skid back on) so that may have just shifted everything. Ahh well, time to put her back together.

The silence often, of pure innocence persuades, when speaking fails

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06-03-2004 04:02 PM  13 years agoPost 6
Greg McFadden

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Richland, WA

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that was what I thought, so I pulled the whole thing apart, fan still tight... ahh well, it just bothers me when I find nothing wrong, especially as this scoob is approaching 2 years (come sept) and countless gallons of flight (she's been good to me). Upshot is I took this opertunity to check the bearings, tail bearings fine, main bearings fine, replaced head bearings and high speed bearings not long ago.
\
I did find the start hex adapter loose but I doubt that that was the problem. I used to locktite those on but after I had to destroy the last one to get it off, I just tighten after every couple of flights.

The silence often, of pure innocence persuades, when speaking fails

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06-03-2004 05:30 PM  13 years agoPost 7
Cassini

rrApprentice

Enterprise, AL

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Check your one way bearing to ensure that it don't have a crack in it.

A crack in the one way may show up as a binding rotor system.

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HelicopterHIROBOOther › Scoob question
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