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Axle bearing question
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papastoyss
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PostPosted: Wed, Feb 18 2015, 3:07 pm    Post subject: Reply with quote

Beck wrote:
Wayne,
I did consider all of your options before starting.

I am using the stock mounting points as in your photos. I removed the rubber bushing at the pinion and made a steel one. The cover mounts will also be solid.

A lot of the vehicles I was looking at had the hubs removed already, and others had bad bearings in them. That kind of scared me. Another concern of using the Explorer hubs was the top mount. It is like the pin of a ball joint. It doesn't provide much turning resistance. I like the hub design of the Lincoln LS better but the wheel bolt circle on those is only 4.25". The axles may be smaller also. The Lincoln LS hubs are aluminum the Explorer are steel.

After much consideration I decided there were more moving parts to rob power so I went with the conventional axle design. I even considered moving the center section forward a little and letting the CV joints angle forward. This would shorten the distance from the axle center line to the hitch hole.

I wasn't sure how much abuse the CV joints could take either.
Alignment is critical when abusing CV joints. In the late 70s I ran a NHRA L/G Fiat w/VW engine & transaxle.We took the bearing hubs from VW trailing arms & welded them to a tube shaped like a dropped axle in order to use a 4 link rear suspension. When the tube would flex enough to put the CVs in a bind the result was a broken CV joint on the starting line w/an 8,000rpm clutch sidestep and a locked (spool) diff. Is there any reason you can't use a narrowed 9" Ford axle, esp if the whole assy. is to be welded into the frame?
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Beck
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PostPosted: Thu, Feb 19 2015, 11:05 am    Post subject: Reply with quote

Beck wrote:
enjenjo wrote:

just use the 9" axles, and have Moser respline them for the length you need. If the axles are short, any 28 or 31 spline axle is big enough for 31 splines. Moser, last time I checked, got $80 plus shipping to respline axles.


The Explorer axles are smaller between the bearing surface and the splines. I thought the 9" axles were also.


I was wrong. The Explorer axles are NOT smaller in the center. I saw the center was smaller than the outboard axle bearing. It is not smaller than the spline OD.
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enjenjo
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PostPosted: Thu, Feb 19 2015, 12:05 pm    Post subject: Reply with quote

Beck wrote:
Beck wrote:
enjenjo wrote:

just use the 9" axles, and have Moser respline them for the length you need. If the axles are short, any 28 or 31 spline axle is big enough for 31 splines. Moser, last time I checked, got $80 plus shipping to respline axles.


The Explorer axles are smaller between the bearing surface and the splines. I thought the 9" axles were also.


I was wrong. The Explorer axles are NOT smaller in the center. I saw the center was smaller than the outboard axle bearing. It is not smaller than the spline OD.


Once you get 4" behind the original spline, all Ford 9" axles from 1970 on are big enough for 31 splines.

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