Moon disc fasteners

[Mile High Talon]

What thread/pitch/head machine screw fasteners do most use to attach their plain old non-Dzus Moon discs?

The hex-head self-thread machine screws received from Moon are so long they require an included plastic bushing/washer, and they don't have an aero profile or sleek finished look. Since they only sent 12, and I need at least 24, I'll use whatever is preferred by the inspectors, or used by most racers, or could go with S/S machine screws with a radiused-crown allen head.

Thanks,
James LaMere
Mile High Talon
Denver, CO

[Glen]

In the past I used 10-32 machine screws with a button head. Add a little gorilla snot to the threads when you install them so they don't back out.
Glen

[RichFox]

I have also used 10-32 but now have the Dzuse button Moons. Get them. It's just not worth fooling with the little screws every time you want to check air pressure or wheel bearings. After a while, you will start putting it off.

[Seldom Seen Slim]

Ditto what Rich said.  I've got Moons on my pickup -- and the screw-on type wouldn't stay put.  They'd loosen just enough that I'd hear click-click, then in the mirror I'd see a disc pulling out to pass me.  I kept tightening them -- that didn't help enough, either.

The button-type I've got on the pickup now stayed quiet -- and stayed on -- all last summer without a whimper.  I can check air pressure easier, too -- just like he said.  Pretty soon it'll be warm up here, the salt on the roads and the snow in the driveways will be gone, and I can put the Moons back on the truck.  Of course there's one potential hassle -- when I had the winter tires put on the rims they bent the mounting tabs in a bit -- now I've gotta figure out how much to pull them out before I can make the buttons fit.  Life is rough in the Great White North. 

We went snowshoeing off our deck yesterday. I betcha not many of you can say that (yeah, I know, you don't want to be able to say that, either...).

[JackD]

To start, put the valve stems in the back of the wheel.
If you are going to run them only on the street, Ansen make SS disks that look the same but without the buttons or screws.
They go on like a regular full wheel cap and stay..
The reason for the little nylon washer or the Dzus fasteners is to give them a little movement so they don't come loose when the wheel flexes.
No matter what kind of a screw you use they will all come loose and the Yellow Snot (old school) or Liquid Teflon (trick new stuff) in a tube will take care of it.

[Dynoroom]

No matter what kind of a screw you use they will all come loose and the Yellow Snot (old school) or Liquid Teflon (trick new stuff) in a tube will take care of it.

Who says you can't teach an old dog new....   

[Glen]

One of the setups I made some small kidney shaped washers with two holes. They were 1" wide. So the disk had six mounting holes and took some of the bending away from a single screw.Never had one come loose, also used gorilla snot on the threads, it didn't allow the holes to wear as well.

[jimmy six]

You did not state what type of wheel you were going to attach them to. A 10-32 will give you the most threads in a steel wheel. I would use 10-24's in aluminum and I do. I purchase stainless steel Allen button head head screws from McMaster-Carr by the box. I also use flat washers. They are a little areo-dynamic.

 I have never had a screw on a disc come loose either on steel or aluminum since 1975. I apply never-seize/silver goop to the aluminum ones.. Good Luck

[russ jensen]

I use 10-32 SSflat heads- that way they are flush w/ disc

[836dstr]

McMaster-Carr is a GREAT supplier of all sorts of goodies, from fasteners to tools,etc.

Usually next day delivery. With the cost of gas these days it's more cost effective to order on-line and have UPS burn the fuel. M/C has a great selection and realistic minimum quantities for ordering.

[Mile High Talon]

These will only be used on the Salt on steel wheels. Thanks for all the responses! I purchased 10-32 S/S allens w/button heads today, a 10-32 tap, & #21 drill bit, and got one wheel done this afternoon.

James
Mile High Talon

[gearheadeh]

Ditto what Rich said.  I've got Moons on my pickup -- and the screw-on type wouldn't stay put.  They'd loosen just enough that I'd hear click-click, then in the mirror I'd see a disc pulling out to pass me.  I kept tightening them -- that didn't help enough, either.

The button-type I've got on the pickup now stayed quiet -- and stayed on -- all last summer without a whimper.  I can check air pressure easier, too -- just like he said.  Pretty soon it'll be warm up here, the salt on the roads and the snow in the driveways will be gone, and I can put the Moons back on the truck.  Of course there's one potential hassle -- when I had the winter tires put on the rims they bent the mounting tabs in a bit -- now I've gotta figure out how much to pull them out before I can make the buttons fit.  Life is rough in the Great White North. 

We went snowshoeing off our deck yesterday. I betcha not many of you can say that (yeah, I know, you don't want to be able to say that, either...).

Some of the cars I have seen using "Dzus" or button fasteners only have 3 per wheel, Is there some allowance for these to use 3 instead of 6 per wheel? Is there someone that markets ready made tabs to weld onto my steel wheels? Thanks for your help in this.

[interested bystander]

Call Moon, they advertise evrywhere and are Landspeed racers and friendly!

 Simple!

You worry too much.

[Milwaukee Midget]

You'll need the jig and the parts -

http://www.mooneyesusa.com/moon-discs-c-188_211.html

[Dr Goggles]

 I used my handy little home-made countersinking anvil that I made for our Al body, carefully measured out the spacing and then drilled once I'd dimpled the disc.....the difference in what I was doing Is that we fastened through the centre NOT to the rim.Our discs have a "nipple" in the centre and I drilled through the raised section of the centre(about 4" in) and welded some stainless nuts on the back, then used M8 stainless countersunk flat heads. didn't rattle loose, a little slow to get off .

Now , I'd post a pic but Jon's cuss-filter won't let my photobucket account link up to this site................