REFLECTOR: Reflector Digest, Vol 89, Issue 59

Mark Riley the_rileys1 at verizon.net
Thu Aug 16 15:46:40 CDT 2012


Buy a shimmy damper from Velocity
Problem solved.

Sent from my iPhone

On Aug 16, 2012, at 1:00 PM, reflector-request at tvbf.org wrote:

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> Today's Topics:
> 
>   1. Re:  Nose wheel (Andrew Judge)
>   2. Re:  Nose wheel (Ron N VelocityXLFG)
>   3. Re:  Nose wheel shimmy (Don Johnston)
>   4. Re:  Nose wheel shimmy (Brian Michalk)
>   5. Re:  Nose wheel shimmy (Mark Magee)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Thu, 16 Aug 2012 11:40:07 +0000
> From: Andrew Judge <ajudge at grovenetworks.com>
> To: "'reflector at tvbf.org'" <reflector at tvbf.org>
> Subject: Re: REFLECTOR: Nose wheel
> Message-ID:
>    <B99146CB7DF2FD4DB222D73B6154507B83A82DA4 at EXCH10.grovenetworks.com>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> Yeah - you built the pant wrong. Build another one. That's my advice. Happened to me in 1998. My 3rd pair, Velocity built. I never take it off now, only to fill it with air or tighten the nose. 
> 
> Andy
> 
> ----- Original Message -----
> From: David Ullman [mailto:ullman at robustdecisions.com]
> Sent: Wednesday, August 15, 2012 09:15 PM
> To: reflector at tvbf.org <reflector at tvbf.org>
> Subject: REFLECTOR: Nose wheel
> 
> A question:  I have had little trouble with nose wheel shimmy.  Once in a
> while I will excite it, but not often.  I have recently added my wheel pants
> and all seemed well until the other day.  I took off and after climbing to
> 2500 ft and leveling off, I noticed a significant yaw.  I could see and feel
> it, and the ball was like three diameters to the right.   I looked around
> and checked my rudders and they were fine, so I assumed my nose wheel was
> cocked and acting like a rudder.  By this time I was near home, had full
> control over the crab I was flying so I continued back.  
> 
> On landing I put the nose wheel down gently and it whipped back and forth so
> hard it tore off the back section of the faring.  On .later checking, the
> screws holding it to the front half were in the same state they had been,
> the force just tore out the holes.  I checked the side force on the wheel
> and it feels about right (I don't have a scale), near 10-15 pounds at the
> axel.  
> 
> Thinking back, another flight had a slight yaw that I had to trim out. 
> 
> Needless to say the entire front faring is off now and isn't going back on
> until I have some plan.
> 
> So, the question: what is happening here?  Have other experienced this?
> 
> David Ullman
> N444DX
> President EAA 292
> 541-754-3609
> david at davidullman.com
> 
> ****************************************
> 
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> 
> 
> ------------------------------
> 
> Message: 2
> Date: Thu, 16 Aug 2012 09:16:38 -0500
> From: Ron N VelocityXLFG <velocityxl at fastmail.fm>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Subject: Re: REFLECTOR: Nose wheel
> Message-ID: <502D00C6.2080903 at fastmail.fm>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
>  I had a simaliar issue  Found if I fly straight and fast it will 
> correct the wheel pants. It seems to happen to me mostly on touch and
> goes . I found If I just touch the nose wheel and do not give it time to 
> be completely  straighten before I lift it off it can happen.
> I have around 10 -15#  at the back of the wheel usaly closer to 10#. 
> Ballanceing  the front  wheel I found to be the biggest prevention to 
> shimmy. Well that and not bouncing the front wheel on lift off.
> 
> Ron
> 
> On 8/16/2012 6:40 AM, Andrew Judge wrote:
>> Yeah - you built the pant wrong. Build another one. That's my advice. Happened to me in 1998. My 3rd pair, Velocity built. I never take it off now, only to fill it with air or tighten the nose.
>> 
>> Andy
>> 
>> ----- Original Message -----
>> From: David Ullman [mailto:ullman at robustdecisions.com]
>> Sent: Wednesday, August 15, 2012 09:15 PM
>> To: reflector at tvbf.org <reflector at tvbf.org>
>> Subject: REFLECTOR: Nose wheel
>> 
>> A question:  I have had little trouble with nose wheel shimmy.  Once in a
>> while I will excite it, but not often.  I have recently added my wheel pants
>> and all seemed well until the other day.  I took off and after climbing to
>> 2500 ft and leveling off, I noticed a significant yaw.  I could see and feel
>> it, and the ball was like three diameters to the right.   I looked around
>> and checked my rudders and they were fine, so I assumed my nose wheel was
>> cocked and acting like a rudder.  By this time I was near home, had full
>> control over the crab I was flying so I continued back.
>> 
>> On landing I put the nose wheel down gently and it whipped back and forth so
>> hard it tore off the back section of the faring.  On .later checking, the
>> screws holding it to the front half were in the same state they had been,
>> the force just tore out the holes.  I checked the side force on the wheel
>> and it feels about right (I don't have a scale), near 10-15 pounds at the
>> axel.
>> 
>> Thinking back, another flight had a slight yaw that I had to trim out.
>> 
>> Needless to say the entire front faring is off now and isn't going back on
>> until I have some plan.
>> 
>> So, the question: what is happening here?  Have other experienced this?
>> 
>> David Ullman
>> N444DX
>> President EAA 292
>> 541-754-3609
>> david at davidullman.com
>> 
>> ****************************************
>> 
>> _______________________________________________
>> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
>> 
>> Visit the gallery!  www.tvbf.org/gallery
>> user:pw = tvbf:jamaicangoose
>> Check new archives: www.tvbf.org/pipermail
>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>> 
>> _______________________________________________
>> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
>> 
>> Visit the gallery!  www.tvbf.org/gallery
>> user:pw = tvbf:jamaicangoose
>> Check new archives: www.tvbf.org/pipermail
>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
> 
> 
> 
> ------------------------------
> 
> Message: 3
> Date: Thu, 16 Aug 2012 09:37:06 -0500
> From: Don Johnston <numa at comcast.net>
> To: reflector at tvbf.org
> Subject: Re: REFLECTOR: Nose wheel shimmy
> Message-ID:
>    <CALD29ipUVdBb-2EoZotVRLcvCDuQgHGg9nANE170RVvJ9pW_QQ at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> Good luck with that. I haven't been able to get into the archives in over a
> month. All I get now is:
> Forbidden
> 
> You don't have permission to access /pipermail/ on this server.
> -Don
> --------------------------------------------------------------
> From: Mark Magee <edjonesbrady at gmail.com>
> Date: Wed, 15 Aug 2012 22:06:27 -0500
> Subject: Re: REFLECTOR: Nose wheel
> 
> Hi David,
> I have experienced exactly what you did and with similar results. You need
> to scan the archive using shimmy as your search term.
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> 
> ------------------------------
> 
> Message: 4
> Date: Thu, 16 Aug 2012 10:00:18 -0500
> From: Brian Michalk <michalk at awpi.com>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Subject: Re: REFLECTOR: Nose wheel shimmy
> Message-ID: <502D0B02.60304 at awpi.com>
> Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
> 
> My bad.
> I let that one slip off my list.  I should be able to get the archives 
> online this weekend.
> 
> On 8/16/2012 9:37 AM, Don Johnston wrote:
>> Good luck with that. I haven't been able to get into the archives in 
>> over a month. All I get now is:
>> 
>> 
>>  Forbidden
>> 
>> You don't have permission to access /pipermail/ on this server.
>> 
>> -Don
>> --------------------------------------------------------------
>> From: Mark Magee <edjonesbrady at gmail.com <mailto:edjonesbrady at gmail.com>>
>> Date: Wed, 15 Aug 2012 22:06:27 -0500
>> Subject: Re: REFLECTOR: Nose wheel
>> 
>> Hi David,
>> I have experienced exactly what you did and with similar results. You 
>> need to scan the archive using shimmy as your search term.
>> 
>> 
>> _______________________________________________
>> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
>> 
>> Visit the gallery!  www.tvbf.org/gallery
>> user:pw = tvbf:jamaicangoose
>> Check new archives: www.tvbf.org/pipermail
>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
> 
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> 
> ------------------------------
> 
> Message: 5
> Date: Thu, 16 Aug 2012 11:52:01 -0500
> From: Mark Magee <edjonesbrady at gmail.com>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Cc: "reflector at tvbf.org" <reflector at tvbf.org>
> Subject: Re: REFLECTOR: Nose wheel shimmy
> Message-ID: <1208BEAD-CB71-4C7F-9142-F0D3765ED2E7 at gmail.com>
> Content-Type: text/plain; charset="us-ascii"
> 
> Go to Brett's forum site and search shimmy.
> 
> Mark B. Magee
> N34XL
> Sent from IPhone 4
> 
> On Aug 16, 2012, at 9:37 AM, Don Johnston <numa at comcast.net> wrote:
> 
>> Good luck with that. I haven't been able to get into the archives in over a month. All I get now is:
>> Forbidden
>> 
>> You don't have permission to access /pipermail/ on this server.
>> 
>> -Don
>> --------------------------------------------------------------
>> From: Mark Magee <edjonesbrady at gmail.com>
>> Date: Wed, 15 Aug 2012 22:06:27 -0500
>> Subject: Re: REFLECTOR: Nose wheel
>> 
>> Hi David,
>> I have experienced exactly what you did and with similar results. You need to scan the archive using shimmy as your search term. 
>> _______________________________________________
>> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
>> 
>> Visit the gallery!  www.tvbf.org/gallery
>> user:pw = tvbf:jamaicangoose
>> Check new archives: www.tvbf.org/pipermail
>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
> -------------- next part --------------
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> 
> ------------------------------
> 
> _______________________________________________
> Visit the gallery!  tvbf:jamaicangoose
> 
> End of Reflector Digest, Vol 89, Issue 59
> *****************************************



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