Some time ago, I had to send back my Experimental AeroLEDs AeroSun VX landing lights because some of the mounting legs on the housing broke off.
These legs are very, very vulnerable and simply cannot handle much stress.
At first, I thought I had received a defective product, perhaps with a problem in the housing. AeroLEDs sent me a new set, and I reinstalled them.
Yes, I did follow the installation manual closely. And no, there was no excessive force applied to the screws.
The second time, I was even more careful. I reinforced the drilled holes with fiberglass and redrilled them to make absolutely sure there would be no stress whatsoever on the mounting legs.
The mounting ears contain a small brass nut encapsulated in a thin plastic leg. A screw with a spring goes from the outside into the brass nut. The idea is that you can adjust the tension on the screw, allowing you to tilt the landing light up or down.
The theory is very nice, but in practice it simply doesn't work. The material used for these legs is just too weak to hold up.
Only one month after installation, one of the legs broke off again — simply because I gently moved the wingtip to another location. And after a couple of months, none of the legs were free of cracks.
If these things break so easily while the aircraft is sitting on the ground, you can imagine what is going to happen with all the vibration they are subjected to in the air.
So I decided to give up on the mounting legs and the adjustability altogether. I am now using epoxy/flox to permanently fix the landing lights in place.
It's a real shame that I have had to do this with a product that costs US$997!
I can only say that I am seriously disappointed. I would never buy these again.
I am pleased with AeroLEDs' other products, but in my opinion, this mounting system is simply not fit for purpose and should be redesigned before these lights are sold to other builders.
In my personall opinion, they should just remove this product from their product catalog.
Enough of the wining, I blocked the Aeroleds VX experimental landing light in place with some wood sticks and duct tape.
I do hope I got the angle right, because there is no way to adjust them again once the epoxy has cured.
Scuffed the housing and surrounding epoxy and made sure that the line of the landing light is parallel to the edge of the landing light tip.
Put a wood stick covered in packing tape with wax on it between the cooling fins and the edge to ensure the epoxy would not spread around the cooling fins.

Mixed up a big batch of west system epoxy with cotton flox and glued the light in place.

It looks awfull but won't move anywhere anymore. I could easily remove the wood sticks once the epoxy got to about half way curing.

The next day I did the same thing on the other wingtip landing light and sanded away the excess epoxy. It looks good from the outside.
