Stupid question huh.

This is somewhat off the subject, but unless I can find a wheel spacer for 12-15bux a pop I am going to make my own.

Reason I need to know what the 114.3 signifies is so I can properly place the bolt holes on the part. I "think" that distance represents the width between one bolt and the bolt 2 away from it.

But in all honesty all i want is the diameter of what is shown below.......

 

Well if the red line is suppose to represent the centers of the lug circles then you are correct.

 

Yeah the red line is the center of the lug circles, but that DIA is not 114.3, there is no way. Its way too small.

 

it refers to the distance between each bolt (center to center).

 

Here is a drawing that should explain. Hope it helps.

Jeff

 

Assuming the radius drawn is the center of the lugs, the diameter is 114.3mm plus 1/2 the bolt diameter or 120.6mm.

Jeff

 

The bolt circle diameter=114.3 hence radius of 57.15 . Center of circle (axle), 5 holes 72 degrees apart. Top bolt in cartesian coordinates...x0, y57.15..next bolt(CW)..x54.15, y17.66...etc.
Trig out the triangle once and you can very easily figure all locations.

Hope this clears this up!

 

WADD,

I believe our wheels are hub-centric and making a spacer will be more difficult than figuring out where to drill the holes. Look at H&R Springs web site at their spacers and you will see what I mean. The raised ring centers the wheel. Without that your wheel may vibrate.
I'm sure they will be out of your price range but will much better than a flat plate, if that was what you had in mind.

Bob

 

Yeah i took the wheel off tonight and figured that out. Oh well, it was a nice thought. Id have to shop down a piece of aluminum ona lathe, and I really dont feel like doing that right now!

 

EDIT...should read x54.35, y17.66

 

this should help, the line indicates 114.3 length.

 

Hmm, so which one of you is right. haha

 

Well,
Seeing that I'm a machinist and I've been doing this for 20+ years..

 

If the 'red line' in the first drawing is representing the center of the lug holes, this is correct when we're talking about vehicle applications. P.C.D. = Pitch Circle Diameter

The calculation should not include the through-hole diameter, it is taken at the center of the hole. You could drill a large through-hole (for example, to utilize a shanked lug nut), and still have the correct P.C.D. A typical though-hole is .625" for automotive use.

Cheeves has it figured out.