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Old Nov 26, 2012, 11:01 PM
yud
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Australia, NSW, Sydney
Joined Nov 2012
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Originally Posted by muck76 View Post
first thing i would do would be to make sure all blades are not pushing down from the top, i'd spin all blades to make sure they are spinning level, and then i would make sure all the motor bases are pushed up and all look like they line up correctly.
From there i would take and hold it from the bottom with the throttle off. Keeping it as level as you can, give it a little throttle and watch the blades. See which one(s) are not moving as well as the rest.
If all looks good, try the other remote and see how it reacts with it?
Thanks heaps!
Checked all the blades and straightened them a bit.
Then tried with a little throttle and found that the front-right blade goes up and down a bit when spinning (about 1mm or less). This is the side that the bird flipps to. The other blades don't move up and down as much.

Does this mean I need to replace the front right hand motor?
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Old Nov 26, 2012, 11:05 PM
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Originally Posted by yud View Post
Thanks heaps!
Checked all the blades and straightened them a bit.
Then tried with a little throttle and found that the front-right blade goes up and down a bit when spinning (about 1mm or less). This is the side that the bird flipps to. The other blades don't move up and down as much.

Does this mean I need to replace the front right hand motor?
is it just the blade? Can you bend the side that is off to level with the rest? Do you have any spare blades to swap? If not, take a blade from the other side that has the same clocking and put it on. See how it spins. If it wobbles too, then yes it maybe your motor. Like i said make sure the base is pushed up tight and the CF rod isn't loose.
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Old Nov 26, 2012, 11:22 PM
yud
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Australia, NSW, Sydney
Joined Nov 2012
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Quote:
Originally Posted by muck76 View Post
is it just the blade? Can you bend the side that is off to level with the rest? Do you have any spare blades to swap? If not, take a blade from the other side that has the same clocking and put it on. See how it spins. If it wobbles too, then yes it maybe your motor. Like i said make sure the base is pushed up tight and the CF rod isn't loose.
It looks like the hinge as a whole goes up and down more than the rest. In fact, it looks like it goes down more than it should.
You suggested to check if the base is pushed right up. Not sure if you mean the base of the motor? If so, I think it's pushed right up.
The rod does not look loose.

So I think it's probably motor

EDIT:
I think I found the problem: I found a crack in the "offending" motor.
Bummer! More wait!
Does anyone know of an Australian outlet selling LB parts?

And thanks heaps for your help muck76!
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Last edited by yud; Nov 26, 2012 at 11:57 PM.
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Old Nov 27, 2012, 05:04 AM
Tri-Quad-Hexa-Octo-copters!!
United States, TX, San Antonio
Joined Feb 2007
14,408 Posts
Y,
Try some CA glue and clamp it until it dries for 20 minutes or so. That should get you going again while you source another spare arm or two.
Cheers,
Jim
Quadrocopter and Tricopter Info Mega Link Index
Quote:
Originally Posted by yud View Post
...
EDIT:
I think I found the problem: I found a crack in the "offending" motor.
Bummer! More wait!
Does anyone know of an Australian outlet selling LB parts?

And thanks heaps for your help muck76!
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Old Nov 27, 2012, 07:15 AM
yud
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Australia, NSW, Sydney
Joined Nov 2012
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Originally Posted by jesolins View Post
Y,
Try some CA glue and clamp it until it dries for 20 minutes or so. That should get you going again while you source another spare arm or two.
Cheers,
Jim
Quadrocopter and Tricopter Info Mega Link Index
Thanks jesolins.
Any particular brand/type or just ca superglue?
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Old Nov 27, 2012, 07:30 AM
Tri-Quad-Hexa-Octo-copters!!
United States, TX, San Antonio
Joined Feb 2007
14,408 Posts
Y,
Your favorite superglue that works on plastics should be fine.
Cheers,
Jim
Quadrocopter and Tricopter Info Mega Link Index
Quote:
Originally Posted by yud View Post
Thanks jesolins.
Any particular brand/type or just ca superglue?
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Old Nov 27, 2012, 07:33 AM
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Quote:
Originally Posted by yud View Post
It looks like the hinge as a whole goes up and down more than the rest. In fact, it looks like it goes down more than it should.
You suggested to check if the base is pushed right up. Not sure if you mean the base of the motor? If so, I think it's pushed right up.
The rod does not look loose.

So I think it's probably motor

EDIT:
I think I found the problem: I found a crack in the "offending" motor.
Bummer! More wait!
Does anyone know of an Australian outlet selling LB parts?

And thanks heaps for your help muck76!
that must have been a fun flight!
Glad you found it
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Old Nov 27, 2012, 05:41 PM
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Joined Jun 2012
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Is there a spare for this top part of the motor mount like there is for the bottom? I see just the motors and entire arms everywhere but must we buy entire arm when it lands hard.
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Old Nov 27, 2012, 07:45 PM
yud
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Australia, NSW, Sydney
Joined Nov 2012
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Quote:
Originally Posted by muck76 View Post
that must have been a fun flight!
Glad you found it
Yup. Great fun...
It was my first flight in which I learned:
* how quick the LB is
* how easy it is for a beginner to lose control of it
* how bad I am at flying...

So now the glue is drying while I'm waiting for delivery of parts. Hopefully the glue job will give me a few minutes of flying, enough to impress my son...
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Old Nov 27, 2012, 09:29 PM
yud
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Australia, NSW, Sydney
Joined Nov 2012
57 Posts
Quote:
Originally Posted by jesolins View Post
Y,
Your favorite superglue that works on plastics should be fine.
Cheers,
Jim
Quadrocopter and Tricopter Info Mega Link Index
Thanks jesolins.

Unfortunately glue did not do the trick. The LB still flipps forward and sideways and will not take off.

Is there a way to change the rotation speed of an individual motor using the 7E? Is it worth giving the motor a bit of extra power? This is temporarily, until my spare parts arrive.
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Old Nov 27, 2012, 09:31 PM
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Originally Posted by yud View Post
Thanks jesolins.

Unfortunately glue did not do the trick. The LB still flipps forward and sideways and will not take off.

Is there a way to change the rotation speed of an individual motor using the 7E? Is it worth giving the motor a bit of extra power? This is temporarily, until my spare parts arrive.
Can you use a really small plastic wire tie? Other wise known as a zip tie
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Old Nov 27, 2012, 09:36 PM
yud
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Joined Nov 2012
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Originally Posted by muck76 View Post
Can you use a really small plastic wire tie? Other wise known as a zip tie
Not sure how this will help. There is nothing to secure with a zip tie. The only unusual movement is the blade + hinge, which move up/down about ˝mm more than the other blades. Otherwise the motor has no other play/movement which can be secured with a zip tie.
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Old Nov 27, 2012, 09:44 PM
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Originally Posted by yud View Post
Not sure how this will help. There is nothing to secure with a zip tie. The only unusual movement is the blade + hinge, which move up/down about ˝mm more than the other blades. Otherwise the motor has no other play/movement which can be secured with a zip tie.
Maybe I'm not understanding what the blade and motor is doing.
Looking at your pic a zip tie wrapped around the cracked part may help pinch that crack tighter against the tube so it wouldn't flop around when activating the motor.
If that silver elbow is not really moving but the shaft and motor are out of line, maybe the shaft is slightly bent.
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Old Nov 27, 2012, 09:49 PM
yud
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Australia, NSW, Sydney
Joined Nov 2012
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Quote:
Originally Posted by muck76 View Post
Maybe I'm not understanding what the blade and motor is doing.
Looking at your pic a zip tie wrapped around the cracked part may help pinch that crack tighter against the tube so it wouldn't flop around when activating the motor.
If that silver elbow is not really moving but the shaft and motor are out of line, maybe the shaft is slightly bent.
Thanks muck76!

Although the crack was in the "silver elbow", it did not move at all. Not before and not after I glued it.
What is moving is the shaft and blade. They have an up/down movement which is about ˝ mm more than the other 3.
The shaft does not look bent but maybe I should take it aout and check. Is it possible to take the motor apart?

Also: is it possible to change the speed of an individual motor using the 7E?
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Old Nov 27, 2012, 09:55 PM
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I cannot answer the speed movement. If we cannot change to fly in a + pattern I'm guessing not.
Ok up and down movement. Can you push the lower cap up further onto the motor. They sometimes do drop. On my Helimax 1SQ, HM goes as far as telling the owner to remove the rubber pad and push up inside the hole with a blunt object. Not sure if these motors are set up the same. But I'm guessing the motor endbell dropped.
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