Good Morning,
I too am interested to 'Aero-Tiger 36

Thank you, Massimo

The early stunt Fox 35s used an Austin Craft universal needle valve assembly.  There are pics on Bill Mohrbacher's Fox 35 ID thread on Stuka Stunt - http://www.clstunt.com/htdocs/dc/dcboard.php?az=show_topic&forum=103&topic_id=323889  I want to say that some of the 1952 engines used the Austin Craft assembly too.

The entire Austin Craft assembly can be replaced with the entire Fox unit, but none of the individual parts are compatible with the other.  Ironically the Austin Craft needlevalve is much better for fine adjustment than the Fox flat sided needlevalve.  Something of a moot point as Austin Craft is all but extinct and they're kind of hard to come by.

Austin Craft, Kap Pak, and Perfect all sold universal needlevalves that are remarkably similar, but the parts generally won't interchange as the spraybar threads are usually different.  Some of the universal needlevalves are really terrible quality.  They like to vibrate loose, or the spraybar breaks in two at the hole in the middle, or the needle leaks or is so loose that the engine won't even start and run with the universal NVA in place.

It'd be an improvement, but you'd still have a McCoy redhead with a soft piston and crankshaft, along with a handful of other shortcomings.  Chroming a McCoy might be worth it if a person were REALLY in love with that engine, but it's just perfume on a pig. 

Thanks Bob - that'll be appreciated, and best of luck with it.
(Color me envious!)

Terry

Terry - I have a "new in box" 1951 Fox (Arnold) 35.
It has some sort of universal needle valve with an "S" bend on the extension.

I will be breaking it in soon and I'll let you know how the NVA works.

   Bob Z.

The SR-71 and B-52 bring back fond memories when I was in the Air Force.

When I was stationed at Castle AFB in Merced (actually Atwater) CA, I would take my jet speed and .15 speed ships out to the flight line LATE at
night when I had to repair the Doppler system and set them up about 50' in front of the bomber I was working on, fire up the EVS system (the 2 boobs under the nose of the jet) and use the camera and cross hairs to set the wing, motor and stab incidence. Made all the differance in the world.   

Dave, believe it or not I vaguely remember that match. I was so impressed with the way your Guillotine turned I built a few for myself. Speed wasn't everything!

Thanks, Mikey!

Bill

Don Hutchinson has a couple of excellent F86 profile plans.

  Thanks guys. Any notion of ego inflation is easily obviated by the incompetence I have shown to date in getting Bobby the stuff he needs, when he needs it. My performance on that, to date, is utterly disgraceful.

    Brett