REFLECTOR: FG Nosewheel Shimmy

Wed Mar 7 20:34:26 CST 2012

Has anyone ever tried tire beads for balancing airplane tires?  Just curious.

Bob Geis
Snohomish, Wa

>________________________________
> From: Mark Magee <edjonesbrady at gmail.com>
>To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org> 
>Sent: Wednesday, March 7, 2012 2:16 PM
>Subject: Re: REFLECTOR: FG Nosewheel Shimmy
> 
>He cleaned the wheel with alcohol I believe and then just stuck them on. As I recall he stuck them on a horizontal surface so that centrifugal force will help them stay put.
>
>Mark B. Magee
>Sent from IPhone 4
>
>On Mar 7, 2012, at 2:44 PM, Kevin Baker <flykb at verizon.net> wrote:
>
>> After you apply the sticker weights how do you keep the weight from coming off?
>> Thanks
>> Kevin 
>> 
>> .
>> 
>> On Mar 7, 2012, at 14:13, Mark Magee <edjonesbrady at gmail.com> wrote:
>> 
>>> Yes by hand. No charge either. Smooth as silk now.
>>> 
>>> Mark B. Magee
>>> Sent from IPhone 4
>>> 
>>> On Mar 7, 2012, at 12:15 PM, Scott Derrick <scott at tnstaafl.net> wrote:
>>> 
>>>> so he just spun it by hand?
>>>> 
>>>> -------- Original Message --------
>>>> Subject: Re: REFLECTOR: FG Nosewheel Shimmy
>>>> From: Mark Magee <edjonesbrady at gmail.com>
>>>> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
>>>> Date: 03/07/2012 10:58 AM
>>>> 
>>>>> Hi Kevin,
>>>>> Interesting question: First I kept it on the yoke and I took it to the local tire shop and asked for help. The guy I know who owns the shop (rural central Texas: lots of tractor tire carcasses about) said nothing to me and walked it over to his vise and using a rag to prevent damage to the aluminum clamped the yoke in his vise.
>>>>> "How fast will this tire go," he asked as a small crowd began to gather and watch.
>>>>> "90 MPH" I replied.
>>>>> He again said nothing and began to spin the tire (yoke clamped vertically) and watch where the tire settled and began applying stick on weights opposite the low spot. After a while of this methodology the tire would never land on the same spot after spinning an it was balanced.
>>>>> A rancher walked in to his shop an seeing the on-lookers asked the shop owner what he was doing.
>>>>> "Mark says he needs to go 90 MPH on his -ZTR- (mower)!
>>>>> They all got a good laugh at my expense... I explained it was a flying machine.
>>>>> Any tire shop that handles ag or lawn equipment can balance your nosewheel or main mounts for that matter, the old fashion way.
>>>>> 
>>>>> Mark B. Magee
>>>>> Sent from IPhone 4
>>>>> 
>>>>> On Mar 7, 2012, at 11:40 AM, Kevin Baker<flykb at verizon.net>  wrote:
>>>>> 
>>>>>> Hi Mark
>>>>>> How did you balance your wheel ?
>>>>>> 
>>>>>> Thanks
>>>>>> Kevin
>>>>>> 
>>>>>> .
>>>>>> 
>>>>>> On Mar 7, 2012, at 11:20, Mark Magee<edjonesbrady at gmail.com>  wrote:
>>>>>> 
>>>>>>> All,
>>>>>>> In cogitating on the nosewheel shimmy trial I went through, I forgot to mention that Scott Swing recommended a perfectly balanced nosewheel, which I took care of. In balancing the nosewheel/tire combo it was readily apparent it was grossly out of balance. Apparently an out of balance nosewheel/tire combo is the 'trigger' that starts the destructive shimmy (vibration).  So my nosewheel shimmy was solved in 2 pieces: Jorge Bujanda style bumper (I made my own from a block of urethane) and a perfectly balanced nosewheel/tire assy. Once done do a high speed taxi to confirm.
>>>>>>> 
>>>>>>> Ahhhhhh... Smooth as glass now.
>>>>>>> 
>>>>>>> Mark B. Magee
>>>>>>> Sent from IPhone 4
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