Bad end to a good day

[JVader]

Not an STC… Field approval only… have been able to get it on a couple but don’t know if it could be done again now days..

Brian


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Brian, any documentation? I sent an email to Eddy and haven’t heard back. I’m assuming it’s just a reinforcement on the gear legs?

[stevesaircraft(Bri)]

Brian, any documentation? I sent an email to Eddy and haven’t heard back. I’m assuming it’s just a reinforcement on the gear legs?

I have the 337’s that I have done… and one of the airplanes is in storage on my field that I can get good pictures of…

The way I’ve done them is by follow on approvals using a copy of a couple 337’s Eddie did…

Brian


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[JVader]

I have the 337’s that I have done… and one of the airplanes is in storage on my field that I can get good pictures of…

The way I’ve done them is by follow on approvals using a copy of a couple 337’s Eddie did…

Brian


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Brian pictures would be great, still deciding if I have the bucks to spend on the shock monster gear or the strengthened univair gear.

thanks!

[stevesaircraft(Bri)]

This is a Univair gear with the support tube mod and gussets at the axle… also did a weld on fuel step..











Just to note… I did not do the welding in these… One of the owners has a fabrication and welding business.. Way better welder than I will ever be..

I’ll have to did out the 337’s when I have the time..

Brian


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[Marc Davis]

As I understand it, the added cross tube will mostly help with buckling of the streamline tube when the gear is sideloaded toward the centerline of the plane. This gear looks like it failed in the opposite direction. The LPC service letter to add gussets at the top of the streamline tube seems likely to have been more helpful here. It would be very nice to see picture of the attach point at the top of the streamline tube.

[mmoyle]

If I remember correctly hydrosorb area of the gear leg is weak. Think most of the load is under tension on a piece that’s about 0.90” thick and maybe 3/4” wide. That piece sticking up... might be a good idea to add gussets to that area as well. Mine failed because the weld quality was chit! No penetration.


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[bluejeepdad]

This PA-16 leg failed in compression, but the same issue contributed, poor penetration of the gusset welds.

Screenshot 2021-07-16 064542.jpg
Screenshot 2021-07-16 064149.jpg

Tim

[Jim]

Hi,

Kind of goes along with things.

https://www.shortwingpipers.org/foru...hlight=Gussets

[Steve Pierce]

JVader's gear failed the rear tube when he hit the lip of the taxi-way. I did the same thing in my Clipper years ago when I hit a small sand dune, compressed the rear tube and that was all she wrote.