So what happened to your axle?  Assuming you have the 9" 57-59?  Here's some info I found helpful when rebuilding my 9":  http://www.ultrastang.com/info1.php  Some considerations:

Not sure if bearings can be interchanged (maybe someone can chime in) but if not, is this a medium or large bearing bearing axle? 

According to the above article, this housing is the same width as the 65-66 Mustang 8" housings (guess that's why you're using it).  Apparently some 8" 28 spline axles can also be used (http://www.maliburacing.com/ford_9_inch/ford_nine_inch.htm) so if the bearing is not an issue you may be able to use the 65-66 8" axles.  Also, apparently some later 28 spline axles are not necked-down and can be shortened and resplined.

I think i have two issues one for sure is the spline is twisted.and two I have runout on the outer side of the bearing causing The wheel flange,the rotor and the wheel and tire assembly to waooble alot.I switces wheel and tire assemblies to verify it is not the wheel.I did my testing while on jacktands in 4th front wheels chocked and nothing in front of the car and ran it up to 60-70 mph and the vibration wobble got worse.Not sure if this is mu sole vibration issue but it needs to be fixed and i hope it is my vibration.
I will try and load some pics now.The od of my bearing is 2.837" and the od of the axle where the bearing goes is 1.365" .
The holes in the housing flange are 3/8" diameter which also signifies it is not the large bearing housing.
Where do i measure to determine the brake offset that i have read about.It setermines where in my case the brake rotor sits in relation to my brake calipers.I say someone modded these brakes before the brackets and such were available form some of the vendors.I have read all the stuff from ultrastang and it is a great help.I think I have a 57 housing with medium size bearings if that makes sense.What vehicles had this setup.I spent hrs on line try to figure this out...Bob You have pm with my e-mail in it.

Last edited by Terry M (5/25/2014 11:29 AM)

I think the axle i had in my car is possibly a 31 spline from a newer car than mine that has been cut/turned down and then re-splined.I say this because of the machining marks on the end of the axle and the axle is not tapered like other 28 spline i have seen and the larger register for the brakes that steve has mentioned.

I came back as an fyi and to share some more info from my findings.I am pretty confident my housing is from a 57 ford and because it measures 57-1/4" form rear of axle flange to rear of axle flange and it has the band in the center and ultrastang feels they are out oof said car as well.I had a axle here from a 57-59 ford and I measured everything up and it slid in and the bearing bottomed out in the housing perfectly So i am confident in what my housing is.My 3rd member is traction lock with 28 spline and 325 gears and i have another Nodular 3rd member here with 486 gears in it .
This is the setup in my brandywine 70 mach 1.Thanks

you need to measure from flange to flange on the outside, where the drum or rotor sits. is that where you got your measurement?

i haven't looked at ultrastang's site to see his info, but i doubt it's any different than any others. maybe the problem came about when i first asked about how wide your rear was. i asked about axle flange to axle flange width. there is a big difference between housing width and axle flange to axle flange. all the measurements in the link i provided to you earlier are axle flange to axle flange. this can only be measured on a rear end with axles installed. pretty much any rear end you look for on the net, is measured this way.
the housing width is measured with the axles out. when it's a bare housing. these numbers don't help when looking for an axle to fit. you can do the math to figure out what axle you need this way, but it's a real headache. i'll post a pdf of rear end measurements for you, then i'll have a look at ultrasatngs and compare. hope this helps. untill we get the correct width straightened out between us, it'll be hard for anyone to help find the axle. sorry if i seem rude with this post, if it comes off that way, i apologize. it's not intended to be.
http://completeoffroad.com/files/how_to_measure_ford_9_axles.pdf
is this the article at ultrastang you were reffering to? http://ultrastang.com/info1.php

 

Last edited by R5CYA (6/05/2014 12:24 PM)

Ok on the measuring we'll have to say there is a couple ways to do it and both are correct.What i curently have with the 57 ford axle(well actaully drivers side right now and the other to be changed)  in my 57 ford housing is axle to axle flange width of 61.75 then the thickness of the flange would have to be added as well. prolly 3/16" x2 for a total of  62.125 " if i did my math right you may be right it could be easier to measure axle flange to axle flange .I will do it the next time am down to the rotor is the rear...lol...

I knew that the the axle housing on a 70 mach one was 59.25 and i was loosing 2" with my 57 housing so i went with 1" wheel adapters to gain that back and get be back stock stance.I figured although some do not like adapters it was still my easiest cost effective out.
Once i get to run the car some and experiment I might see what it looks like  wheels/ tires  fit like without the adapters or maybe scale back to 1/2" spacers but we'll see and for now the goal is to get the vibe out and switch the pass side axle out with a mate to the d-side which is from a 57-59 ford.
Currently i have the pass side axle sticking out of the axle falnge about 1/8 farther than the d-side due to the difference in bearing offset between the two mis matched axles.I should have the other axle in next week once i get axle painted and bearing changed out but figured one drive to town won't hurt anything.Car show this sunday.

r5cya
the measurments in this chart are from housing flange to housing flange .I never though you were being rude at all.We just have a couple different ways of doing it.I just wanted to get back to stock measurments so i could use stock 500's with correct backspacing for a period correct look.
http://www.carnut.com/specs/rear.html

Last edited by Terry M (6/05/2014 2:50 PM)