Do you use the prop nut spinner all by itself or does it go on after the old washer and nut? I know it seems like a dumb question but I wondered this when I installed it. I opted to just use the aluminum prop nut spinner by itself to save weight. I saw a pic of one just now that had both installed. Scroll down in the following thread and you'll see it.

http://www.rcuniverse.com/forum/Rudd...1433660/tm.htm

Joe

I normally use just the spinner nut, but you can go either way with that. I've used both, basically using the spinner nut as a double/ jam nut then. It looks kinda funny though. Friend of mine machines a relief in the backside of the spinner nut, so it screws over the reg. nut. That's his way of double nutting a 4 stroke...

JoeAirPort....

....a lot of times, the spinner nut is the washer, and the nut....

....because there isn't room for the stock washer and nut. If you
were to leave the stock washer on, you would actually lose surface
area for the spinner nut to seat on.

Dave.

Sorry to barge in here, but does anyone know of a good prop nut spinner for a Saito .91 FS? I'm looking for one for a Piper Cub.
Thanks

The Dubro is as good as any....the Saito takes an odd-ball
7mm X 1.00 metric. Tower and Cermark carry them.

Dave.

If you use one, CHECK IT OFTEN! They are usually machined from aluminum and if you over tighten, and damage the threads, they can come off as in the case of using an electric starter. This happened to me. I was lucky and caught it before the engine started. Just a word to the wise.

I've done all combinations: double nut + washer, double nut alone, spinner nut + washer, spinner nut alone. The all work well, if you tighten the nut(s) properly. Still, if you have the room and don't mind the looks, it's still better to use double nuts + washer, especially with 4strokes.

Higley sells thin jam nuts, if space is a problem.

For a vintage style hub (like a Corsair/P47, etc..) I like the TruTurn line. They have hubs as small as 1" diameter that use the regular TruTurn prop nut... no aluminum on the crank threads... and the "nut" mounts just like a standard TruTurn spinner, except it mounts to the front of the prop, centering on the prop washer instead of a backplate:

http://www.truturn.com/cgi-bin/store...inc=1a&maxp=30

I picked up one of the Tru-Turn prop hubs, intending to use it on an Astro Hog with OS-70 four stroke. It's pretty long on the front of the plane; 1/2" longer than the Higley jam nut / acorn nut combo. I can't decide if I like it for the Hog.

I've been looking at the Sportsman Waco 60 biplane as a possible future plane. With the big round cowl, the Tru-Turn setup might look better on it.