Does anyone know where to get fine thread needle valves for a Big Mig?
I like to run pressure bladders on my aerobatic planes, and that requires a fine NV. I have one fine thread NVA that was made by Larry Driskill at kittingittogether.com. but he no longer makes them. I can probably cobble a remote one together from one of the few remaining Cox product engine backplates, but they were rare back in the good ol days. I don't know that they are long enough to press into the screw holes in the engine, minus the venturi. That's a helluva hole too, probably needs a restrictor added on after pressing in the NV.

Anyone else here use these? Surely there are some combat guys/girls around that still use them.
Thanks,
Rusty

All NV needle valves have fine threads. If the fuel leaks through the thread due to high pressure, you can easily fix it. Take a 3 mm diameter silicone tubing, cut 5-7 mm, and put it on the thread. Screw the needle over it , which will squeeze the tubing and make a barrier for the leaks.

Okay, I'll give it a try. I guess you could call the one I'm using a Super-fine thread. My bladder is pretty thin so the pressure isn't too high.
Thanks, admin.
Rusty