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500 Class Electric Helicopters 500 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar. |
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10-28-2010, 03:37 PM | #1 (permalink) |
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Join Date: Mar 2009
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bad vibration during spool up and down
I just built my 500 3g and am experiencing a bad vibration about halfway through spool up and spool down. it only lasts for a second or two and then goes away. it does not vibrate during flight at all. Any suggestions?
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10-28-2010, 06:29 PM | #2 (permalink) |
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Join Date: Feb 2009
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Check blade tension, if there a bit too tight in the grips then you'll be getting some vibrations until they swing into place . Also re-check blade balance both main blades and tail.
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10-28-2010, 07:35 PM | #3 (permalink) |
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Join Date: Dec 2008
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Is it a vibration or a shake?
If it is a shake it is pretty normal, and is often caused by to tight blades. If you tilt your heli to the side the main blades should stay straight but you should be able to "shake" them out of position. Pete |
10-28-2010, 08:41 PM | #4 (permalink) |
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Join Date: Aug 2010
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Check your feather shaft and main shaft. Even thought it looks straight it might not be.
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10-29-2010, 01:03 AM | #5 (permalink) |
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Join Date: Mar 2009
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I guess it is more of a shake than a vibration.
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10-29-2010, 03:21 AM | #6 (permalink) |
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Join Date: Apr 2010
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Yea could be main shaft if it's on spool down and spool up... BUT, I recently installed a 3G into my 500 and saw the same thing happening, however a couple of guys at my field said this is fairly normal for a 3G FBL setup? I've just now put a new main shaft on since I bought it used but haven't had the chance to fly it yet
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10-29-2010, 06:01 AM | #7 (permalink) | |
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Quote:
If it is the main shaft I believe it might not stop that quick. Last edited by im4711; 10-29-2010 at 06:01 AM.. Reason: spelling |
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10-29-2010, 07:42 AM | #8 (permalink) |
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mine shakes a bit when the blades are spinning at low RPM if its not shaking when the blades are at full speed you are probably ok depending on how bad the shake is..
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10-29-2010, 08:55 AM | #9 (permalink) |
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Mine will shake the odd time halfway during spool down if the collective is in just the right spot. Giving a little collective one way or the other usually smooths it out immediately. It's only happened 5 or 6 times all summer and just once since I went FBL last month.
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10-29-2010, 10:09 AM | #10 (permalink) |
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i should mention that my friends 450 does the same thing. he does like tight blades tho..
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----------------------------------------------------------------- Blade 180 CFX, Sold the rest of my stuff, I dont really fly all that often any more. |
10-29-2010, 07:24 PM | #11 (permalink) |
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Join Date: Feb 2008
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IMO, barring any crashes and any bent shafts or other equipment on the heli, the main and/or tail grips are too tight on the blades.
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