REFLECTOR: Nose wheel

[Ron N VelocityXLFG]

  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
>
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