I'm sure this has been addressed here in the past.  I can't seem to find anything in the archives.  Question:  Does anyone have a good fix for keeping the collar on a ST NVA in place (tight)?  Seems sooner or later the thing loosens and lets the needle valve vibrate and move.

I have several of Randy's PA NVA set ups and they work fine but I hate to abandon all the standard ST assemblies that I have.

Any advice appreciated.

Thanks,

Joe

Steven,

As I mentioned in my question, I have some PA nvs.  I'm interested in finding a way to improve the ST nvs that I already have.

Hello,

I imagine I'll end up replacing most of my ST NVAs with PAs.  As Ty mentioned, the only problem with the STs is the collar staying put. 

I guess I just have trouble discarding something that could-possibly- be fixed.  Growing up in the 1950's, if I was fortunate enough to have a bicycle, Flexible Flyer sled, or later a car, when something broke or didn't work on these things you either fixed it or walked.  Replacing it wasn't really an option. I suppose I'm still of that mentality.  Also, if I can take something that isn't working and somehow improve or repair it, I get a sense of satisfaction from doing that which is absent when I throw the old thing away and buy a new one. Often, it's not worth the effort and is impractical but I still try.

I might wrap some teflon tape on the ST threads. Probably won't help much but we'll see.  Next step, call Randy and order some PA valves. . .

Thanks for help.

Joe

I do not have much experince with ST NVA, but here is one I had at Brodaks a few weeks back.

See thread:
http://stunthanger.com/smf/index.php?topic=5639.0

Paul

Joe, I think you'll eventually come to the conclusion that the gland nut isn't turning, just the threads loosening. At least, that's my view on the ST NV Assemblies. I used them for combat, and speed, where it was common practise to close the NV, then open it for starting. The Randy Aero/Nelson NV assemblies would have been dearly loved, in those days. The thing I like about them, is you can tighten them VERY tight, but still adjust the NV. You might consider cutting the end off the ST spraybar and making a plastic cone to turn it into a PA clone.  Steve