9 inch Ford

So does anyone have a link to how to determine how wide my axles need to be? I have a housing that is 44.5 inches from housing end to housing end and the pinion is centered. Is there an equation to figure out the length of each axle and where is the measurement taken from on the axle ? Thanks,Jim.

 

Even if there is a formula, I'd put a third member in it and measure both sides, just to be sure.

 

If I measure them how much should I subtract for clearence to the pin and any idea what the measurement of the space between the axles in the center is ?

 

The folks who make axles usually know the details....

http://www.currieenterprises.com/cestore/customrearends.aspx

should give you an idea of what info they need.

 

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Here you go. Provide this info and the pros do the rest.
http://www.mittlerbros.com/PDF_Files/1000-RENK1%20Instructions.pdf

 

I do this everyday, so ***uming that it is a big bearing housing, the total rear end width (axle flange to axle flange) will be 49.25". Big bearing housing ends have a 2 3/8" brake offset. So 44.5" + 2 3/8" + 2 3/8" = 49.25".

That is where we will start.

-Total width of 49.25" divided by two = 24.625".
-24.625" -.562" (half of the space between the axles) = 24.063".
-24.063" - 2.125" (half of 4.250", which is the difference between the left and right axle on centered pinion housings) = 21.938".

-Left side axle length is 21.938".

-We do the opposite for the right side axle. 24.063" + 2.125" = 26.188".

-Right side axle length is 26.188".


A small bearing housing would add .125" to each axle as the brake offset on a small bearing axle is 2.5".

 

So DE,

What makes up the space between the axles? It's the cross pin plus clearance?

How far off center is the pinion from the housing center?

Thanks for sharing the details.

 

The space between the axles for the cross pin is 1.125". On a centered pinion housing, the pinion is centered, but the left side housing tube is shorter than the right side tube, so it looks like the housing is offset. If you want a centered housing, the pinion will have to be off to the right.

 

I show the pinion being offset .97" to the p***enger side and 2.25" downward. I got this off of a drawing though, I don't have mine in front of me to measure.