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  #1  
Old 07-15-2013, 10:21 AM
Flying again!'s Avatar
Flying again! Flying again! is offline
 
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Location: Keller, TX
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Default Nose gear fairing bracket breaking

I bought my -10 about 2 years ago. Last spring I had the left side nose wheel fairing bracket break and the left was cracked. Luckily no damage to the wheel fairing. I replaced both and made sure the brackets were smoothed out to relieve any potential stress points.

After returning from New Orleans Saturday, I saw the bracket had broken again after 100 hrs from the last time.



The bracket on the right broke last year, the one on the left broke this weekend. Note how the break is virtually identical. The right bracket also had a crack.


Obviously if I use the factory bracket, it will break again. Has anyone come up with a beefed up bracket to fix this issue? I searched and only found improved brackets for the main gear.

TJ
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Last edited by Flying again! : 07-15-2013 at 10:26 AM. Reason: Add more detail
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  #2  
Old 07-15-2013, 10:57 AM
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Mike S Mike S is offline
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What do you have as a washer stack up on the axle??

There should be a small dia washer next to the fork, it will fit into the slot of the pant bracket. Then there is a large area washer that captures the bracket and then the nut-----bolt head on the other side.

The combination of the fork, small washer, and large area washer make a slot that the bracket slides into.

IMHO, the small washer needs to be slightly thinner than the bracket, so the large area washer will clamp down on the bracket when the nut is tightened.
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Flying as of 12/4/2010

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Last edited by Mike S : 12-09-2013 at 01:46 PM.
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Old 07-15-2013, 10:59 AM
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CharlieWaffles CharlieWaffles is offline
 
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I've seen others with the same problem. Perhaps we could start letting Vans know so if there are enough of us they will begin to make the piece with a thicker stock.
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  #4  
Old 07-15-2013, 12:41 PM
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Quote:
Originally Posted by Mike S View Post
What do you have as a washer stack up on the axle??

There should be a small dia washer next to the fork, it will fit into the slot of the pant bracket. Then there is a large area washer that captures the bracket and then the nut-----bolt head on the other side.

The combination of the fork, small washer, and large area washer make a slot that the bracket slides into.

IMHO the small washer needs to be slightly thinner than the bracket, so the large area washer will clamp down on the bracket when the nut is tightened.
I'll check and take some pictures to make sure the washer stack-up is ok on the axle. However, the crack is starting near the bolt that also serves as the tow bar attachement, not at the slot that captures the axle.

I may try and double the thickness of the area that is cracking or even try to use Stainless steel in an attempt to stop the cracking/breaking.
By the way, I land on paved strips and keep as much weight off the nose gear during t/o and landing as possible.
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Last edited by Mike S : 12-09-2013 at 01:49 PM.
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  #5  
Old 07-15-2013, 01:03 PM
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Quote:
Originally Posted by Flying again! View Post
However, the crack is starting near the bolt that also serves as the tow bar attachment, not at the slot that captures the axle.
That is why I am asking about the washers.

If you are using a washer that is too thick, the bracket will not be clamped in place by the axle bolt/nut.

If you do not have the washer in there at all, and the axle nut is not tightened enough, the bracket will still be clamped properly.

In either above case, the front bolt is the only thing keeping the pant and bracket aligned-------and the location of the crack is exactly where I would expect it to be if this was the case.

Just a FYI, I use this order to install the pant/bracket assembly. First slide the bracket over the small washer in the "slot" I described in my other post, then install and tighten the Allen head bolts at the front of the bracket. Then tighten the axle nut.
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"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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Old 07-15-2013, 03:50 PM
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Take a look at drawing 2 on page 46-6.

It shows the washer stack up I was talking about.

On my plane I used a single thick washer instead of a standard and a thin. What really matters is that the total is just a bit less than the thickness of the bracket-----AND-----that the OD of the washers fit the inside of the slot in the bracket without a lot of play.
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VAF 909

Rv-10, N210LM.

Flying as of 12/4/2010

Phase 1 done, 2/4/2011

Sold after 240+ wonderful hours of flight.

"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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  #7  
Old 07-15-2013, 05:57 PM
BobTurner BobTurner is offline
 
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I agree with Mike. Since there is not a reported epidemic of these, and you're continually breaking yours, both sides and in the same place every time, suggests that the part is under a stress that it was not designed for; possibly due to incorrect assembly of washer stacks, or something else. Look at the plans carefully and make sure that when you tighten the nose bolt you are not putting the bracket under any unusual stress.
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  #8  
Old 07-15-2013, 10:05 PM
Wayne Gillispie Wayne Gillispie is offline
 
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At 14 kts GS during taxi, my nose wheel pant will start to oscillate up and down. I do not taxi for an extended period of time in the 13-18 kt GS range. Some may think it is the main gear shimmy, but I watched mine do it while taxiing in the very early morning sun. It "felt" like the mains doing it. If you have felt a lot of shimmying going on, that could be your culprit too.
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  #9  
Old 07-16-2013, 08:16 AM
Gary 40274 Gary 40274 is offline
 
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Location: Conyers GA
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Default nose gear pant

I have found my attach brackets cracked several times, but not from the front but rather from the rear attach half hole that slides in the axel stack up.

I fly off grass mostly so lots more vibration going on. I have tried various methods of strengthening it and may finally solved it with a doubler over the whole rear area around the axel nut.

I agree that Vans should make this part from thicker material.

Gary
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  #10  
Old 07-16-2013, 08:52 AM
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No Pants, No Problems....
John
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