TEK Probe and pressure connection
Posted: Sun Jul 13, 2014 5:40 pm
Here some experiences when equipping openxsensor/-vario with a TEK-Probe:
Pressure connection first try: Result: the tube broke out when loaded Better versions with supported connections, second one with silicon: The tested probes: The absolutely best "Braunschweiger Duese": The idea and the plan is from here: Thanks Tempo
The used material: 4mm gold socket, 2mm and 4 brass tube, 9mm washer, solder Instructions: Drill a 2mm hole for the 2mm brasstube, make a chamfer in the 4mm brass tube and solder it inside the socket, the chamfer ending exactly at the 2mm hole, solder the 2mm brass in the hole, remove eventally overcoming brass and solder inside the socket carefully with a 4mm drill (by hand, not machine!). Remove the overcoming chamfered brass at the inlet, smooth the inlet inside and outside (round it). Rasp the hole inside the washer to fit the outside of the socket and solder it. shorten the overcoming socket at the outlet. Rasp the outlet at the washer and sand it.
Important: check always if everything is airtight.
Mounting example: And here is the result, an overcompensated TEK. You can adjust it down for exact compensation by reducing the outlet with some tape (easy), or reducing the outside diameter of the washer (not so easy).
First testflight with rain and vario sound
Cheers Carbo
Pressure connection first try: Result: the tube broke out when loaded Better versions with supported connections, second one with silicon: The tested probes: The absolutely best "Braunschweiger Duese": The idea and the plan is from here: Thanks Tempo
The used material: 4mm gold socket, 2mm and 4 brass tube, 9mm washer, solder Instructions: Drill a 2mm hole for the 2mm brasstube, make a chamfer in the 4mm brass tube and solder it inside the socket, the chamfer ending exactly at the 2mm hole, solder the 2mm brass in the hole, remove eventally overcoming brass and solder inside the socket carefully with a 4mm drill (by hand, not machine!). Remove the overcoming chamfered brass at the inlet, smooth the inlet inside and outside (round it). Rasp the hole inside the washer to fit the outside of the socket and solder it. shorten the overcoming socket at the outlet. Rasp the outlet at the washer and sand it.
Important: check always if everything is airtight.
Mounting example: And here is the result, an overcompensated TEK. You can adjust it down for exact compensation by reducing the outlet with some tape (easy), or reducing the outside diameter of the washer (not so easy).
First testflight with rain and vario sound
Cheers Carbo