[Vlad]

Due to upcoming work on the runway and parking I will relocate my aircraft off airport. Other then driving steel stakes to the ground I am wondering what others did to make tiedown flush with surface and strong enough to withstand a 30+ kts wind? I would like to install two sets of tie downs one over rocky surface and the second set on a clay/sand dirt. Would appreciate any advice and reference.

 

[Dave12]

Hey pal, how about making some out of 5/8 or 3/4 inch rebar? Like they use at Kosh. Would require welding a loop near the driving end for the rope. Maybe 3-4’ long. Drive them into the ground with a sledge at a 60 degree angle. They work well at Kosh. Might not work so well in the rocky soil, but possibly in the clay. Going to be out that way soon.

 

[Gingerdawg]

Duckbill Earth Anchors?

 

[PilotjohnS]

Just me

Now that it is 100+ degrees outside, why not go for it? Dig a hole, pour in a bag of concrete with a rebar hook. Three bags per should be enough in a 1’ x 1’ x 2’ deep hole. Digging sure beats driving in a rod with a sledge hammer.

 

[agirard7a]

Hammer drill

Hi Vlad. Hope all is well. Miss you out East.

Just a thought.... For the rock: Rent a large hammer drill from
HD or local tool rental. Drill a hole and put in some expansion or epoxy set
Anchor bolts that are used for foundation anchors. Weld a ring on top.

For the hard soil. Rent a hole auger, pour some concrete and set the anchor/ring.


Al

 

[Dan 57]

Tires filled with concrete not good enough?

 

[climberrn]

Tires filled with concrete not good enough?

Not for Wyoming.

 

[terrye]

Utility pole cable anchor

Best ones I've seen are utility pole cable anchors. They have a helix on one end and you can drive them in by hand D with a long lever)

https://www.linemen-tools.com/No_Wrench_Screw_Anchor_1_X_66_H_J6528WCA_p/h-j6528wca-hubps816.htm

 

[David Paule]

Ditto Duckbill Earth anchors. They are extremely difficult to remove or pull out.

Dave

 

[Icarus]

Maybe some concrete filled tires on top of the claw?

https://www.aircraftspruce.com/catalog/pspages/claw.php

After you'd have a pretty stout for its weight travel tie-downs.

 

[climberrn]

Best ones I've seen are utility pole cable anchors. They have a helix on one end and you can drive them in by hand D with a long lever)

https://www.linemen-tools.com/No_Wrench_Screw_Anchor_1_X_66_H_J6528WCA_p/h-j6528wca-hubps816.htm

Those are impressive. Nothing like those corkscrew ones that break. Your eye bolt would probably be the weaker link....

 

[mdoyle]

The FAA publishes a document about tie downs that includes a couple of examples.
FAA AC 20-35C

 

[cderk]

The FAA publishes a document about tie downs that includes a couple of examples.
FAA AC 20-35C

EAA Does too... i built the EAA tiedowns to plans and use them every year at Oshkosh. They work great