stunthanger.com

Engine basics => Engine set up tips => Topic started by: Leester on May 28, 2006, 02:41:31 PM

Title: OS NVA vs PA NVA
Post by: Leester on May 28, 2006, 02:41:31 PM

I am running a 40 FP-S on the bench. Will I be better off with the OS NVA or the PA NVA ? Brand new engine no mods.

Title: Re: OS NVA vs PA NVA
Post by: peabody on May 29, 2006, 03:30:29 AM

I believe that the PA NVA is the best available. The nylon seals and fine taper threads contribute to my beliefs, as well as the availability of any single part from Randy.

Title: Re: OS NVA vs PA NVA
Post by: Leester on May 29, 2006, 04:59:20 AM

Thanks: There is nothing wrong with the OS NVA, but it seemed when I went to lean it, it would start to react before it clicked. And when I went to richen it, it took more clicks for it to react and when it did it was past where I originally started from. y1 y1 y1 #^ #^ #^ ~> j1 j1 j1

Title: Re: OS NVA vs PA NVA
Post by: Bill Little on May 29, 2006, 06:27:46 AM

The PA NVA is the best out there!  It is fine thread, and the collett to hold the setting works much better than the ST.  It only needs to be finger tight to keep the needle from moving since it has a nylon seal.  I would definitely use the PA.

Title: Re: OS NVA vs PA NVA
Post by: wmiii on May 29, 2006, 11:57:28 AM

 For those who don't know Randy also makes a Fox .35 version of
the PA NV.

  Walter

Title: Re: OS NVA vs PA NVA
Post by: Andrew Hathaway on May 30, 2006, 11:56:24 AM

The problem with the OS needle is that rediculous spring.  When the engine is running you can't hear the click.  You can move several clicks when one click in either direction is the difference between running away and the perfect run.  Not to mention if you actually need the spring (profile) it kinks horribly and looks like crud.  Also after time the knob and spring will come loose so it turns but the needle doesn't, or even better the knob just comes off.