Rear axle pinion angle adjustment - Defender Source
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  #1  
Old October 6th, 2011, 08:17 AM
red64chevelle
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Daniel Smith
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Rear axle pinion angle adjustment

I was following the other thread about pinion angle, and wanted to know what some others thought.

I am going to order either the Rovertym or Rover Tracks adjustable links to really correct the problem, but I was thinking, if I only need to extend the link length, why couldn't I just shim the rear bushing to make the rod effectively longer. This would only last until the correct part arrived, but would allow me to drive around town without destroying my u-joints/rear gear set.



I am referring to shimming out the three bolts that mount the forward end of the bar, moving it aft.


Thanks in advance.

-Dan

Also, how do I turn the [IMG] rule on?
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  #2  
Old October 6th, 2011, 12:22 PM
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Looks like you need rear bushings in the frame too. I guess you could shim the stock rear links I didn't think they would have threads long enough to accomadate many shims
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Old October 6th, 2011, 01:03 PM
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Charles Galpin
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Quote:
Originally Posted by red64chevelle View Post
Also, how do I turn the [IMG] rule on?
Use the "Manage Attachments" button under Additional options to upload images. The popup shows valid sizes and types allowed - you may have to resize them beforehand. Then once uploaded you can use the paperclip icon to put them inline in a post otherwise they will be shown at the end.

hth
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Old October 15th, 2011, 01:38 AM
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Bradlee Duncan
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Never heard of anyone doing it, so I think it would work short term. If you could machine a solid piece of metal to put in there, that would be best because then you don't put very much undue stress on the bolts.

That said, I don't think you want to make the rod longer, do you? Normally people want to point the pinion up to the transfer case which would require somewhat shorter links, not longer because the links connect to the axle housing on the bottom of the housing. As you pull the bottom of the axle housing forward it tilts the pinion upward towards the t-case to accommodate a DC drive shaft.
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Old October 15th, 2011, 01:49 AM
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Quote:
Originally Posted by cbass View Post
Normally people want to point the pinion up to the transfer case which would require somewhat shorter links, not longer because the links connect to the axle housing on the bottom of the housing. As you pull the bottom of the axle housing forward it tilts the pinion upward towards the t-case to accommodate a DC drive shaft.
Or, make it longer, pushing the pinion downward so that the pinion is parallel to the rear output and use the standard driveshaft.
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Old October 15th, 2011, 01:56 AM
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True, although it seems if you're lifting that much you'd want to go with a DC shaft anyway so you don't have to have high angle u-joints. Seems the stock u-joints would wear out much faster being at a more extreme angle all the time (although at least you'd have it balanced correctly by adjusting the pinion down like that).
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Old October 15th, 2011, 08:28 AM
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LR offered these spacers some years back, for 4 cylinder models with HD suspension (for 90's), think they were 5 or 6mm thick, fitted behind the chassis-trailling arm bushes, like you've pictured.

So it can't be a bad thing to do, if LR themselves do it..... can it???
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Old October 15th, 2011, 04:57 PM
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By the looks of your pic you maybe very close to the proper angle for a DC shaft. Hard to tell for sure from the angle but looks close.

Ed
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Old October 16th, 2011, 09:41 AM
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Quote:
Originally Posted by aka rover View Post
By the looks of your pic you maybe very close to the proper angle for a DC shaft. Hard to tell for sure from the angle but looks close.

Ed
Ok, I'll bite. Where is a good place to buy a DC shaft?
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  #10  
Old October 16th, 2011, 12:22 PM
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Quote:
Originally Posted by red64chevelle

Ok, I'll bite. Where is a good place to buy a DC shaft?
Tom Woods, but order through Lucky 8.
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  #11  
Old October 18th, 2011, 04:15 PM
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Daniel Smith
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Any difference in length between a rear shaft using a LT77 and a R380? I am ordering one from Lucky8, but I want to make sure.
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Old October 18th, 2011, 04:41 PM
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Great Basin Rovers, SLC UT is another option.
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Old October 18th, 2011, 09:18 PM
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Just call and ask Justin. He will tell you what you need and he will not try to sell you crap you don't. Lucky 8 is the best.
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Old October 30th, 2011, 09:15 PM
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Yep

Justin got me mine and it worked out great.


Ed
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  #15  
Old October 30th, 2011, 09:33 PM
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Installed the DC shaft from Lucky8 today. The vibration is gone. I have the Rovertym rear arms on order, so I will do that when I get back from sea.
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