4 link dummy arms done and seem to work (PICS) - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 07-22-2002, 08:55 PM Thread Starter
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4 link dummy arms done and seem to work (PICS)

I actually got these done yesterday and planned on doing a little more testing tonight but figured I better mow before it got neck deep (and the wife made me sleep in the garage). Anyways for those interested here are the picks of my progress thus far. The mounts are not yet gusseted or reinforced or really more than tacked on in most places so you will have to over look them for now ( I learned the hard way to test stuff before I weld the piss out of it and have to spend 2 hrs grinding it off). The top arms are shorter than the bottom but it doesn't point the pinion down when it articulates because of the lengths of the arms and how they are mounted. It seems to cycle really well without binding or rubbing anything. Here are a couple of shots.





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post #2 of (permalink) Old 07-22-2002, 09:15 PM
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Re: 4 link dummy arms done and seem to work (PICS)

I think I would turn the upper arms around, with the bushings at the frame and the heims at the diff. This would give more lateral support to the diff, and should allow it to flex a little better. Maybe even mount the bushings perpendicular to the frame for easier up and down movement. Nice long arms though.
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post #3 of (permalink) Old 07-22-2002, 09:25 PM Thread Starter
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Re: 4 link dummy arms done and seem to work (PICS)

I see what you are saying and I might try that. I had initially planned to use half bushings and half heims but the bushings are a real pain to mount at an angle. That is one of the reasons that the bottom rod is heims on both ends. If it doesn't rain tommorow night I am going to build the lower spring catchers. I plan to cut two notches in each of the spring cups and slide a piece of 1/4" x3/4" flat stock thorugh and weld it in then twist the spring down on it so it sticks out both sides. Should hold the spring on and the bolt in the top should keep it from twisting off.
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post #4 of (permalink) Old 07-22-2002, 10:24 PM
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Re: 4 link dummy arms done and seem to work (PICS)

Man your progress is great,but I still cann't believe your using a 12-bolt. Didn't you have a FF Dana 60 rear before? why did you change?
post #5 of (permalink) Old 07-23-2002, 03:14 AM
 
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Re: 4 link dummy arms done and seem to work (PICS)

I'd like to see the forward lower arm mounts pushed more together towards center which should even out the lateral support that is resting soley on the uppers at this point.
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post #6 of (permalink) Old 07-23-2002, 06:00 AM Thread Starter
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Re: 4 link dummy arms done and seem to work (PICS)

Jaffer I was originally going to do a XX pattern from the top but a few people on pirate convinced me that it was not needed. They said that it would fight itself in that position. I know that there are some rigs that run that setup and it works but I am concerened with breakage to the mounts. I will jack it up by the frame when I make the coil retainers today and see how much I can push it either way with the axle hanging loose. If it excessive I will move them in. It is hard to tell but they are at a slight angle now. They go from the outside of the lower coild buckets to about 3-4" inside the frame. The mounts are on a tube that runs from frame rail to frame rail.

Jeremy the 60 drug on everything and it was heavy. The 12 bolt don't hang on everything and it is a great rear. I have been through this 1000 times, the fact that people don't like them just means more for me [img]images/icons/wink.gif[/img] Also I am building light and I have a 4.3 with an automatic transmission, I don't really see the need for heavy duty axles (and I know most of the board won't agree with this). I carry spare just like everyone else.
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