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Rag joint to U-Joint?

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Old Jul 16, 2016 | 01:00 PM
  #1  
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Rag joint to U-Joint?

The steering in my 90 has had a lot of play since I bought, I've just lived with since way back the alignment shop informed me a "new used" steering column was almost $700. As far as I can tell the slop, or at least most of it, is in the rag joint as the top U joint is good and the box appears to be in decent condition.

I've been doing some reading lately and it sounds like a redneck is rebuild or replacement of the rag joint is one possible fix and likely the cheapest option. I did stumble across a couple of aftermarket steering shafts (way too pricey) but that got me thinking, would something like this work?

Borgeson Universal Company :: Universal Joints :: Steel Single Universal Joints :: 3/4-36 X 13/16-36

I haven't disassemble my truck to measure but going off info for aftermarket shafts the sizes seem right. If anybody knows or has done something similar some info would be great, the thought of a slop free steering wheel is getting me all excited!
 
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Old Jul 16, 2016 | 01:49 PM
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Think about this, Rag joints are there to break away in case of accident ...

I suspect a 3/4" double D on the top would be best ...

EDIT
Thus 3/4-36x3/4-DD (if the gear box is 3/4-36, I know the upper shaft is 3/4 double D.)

-Enjoy
fh : )_~
 
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Old Jul 16, 2016 | 02:43 PM
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What is a DD style interface, is that a shaft with a flat face machined onto it? I guess it might be best to take the rag joint off and measure before ordering. I was hoping to only have to muck around in there once.


I suppose having the rag joint let go in the event of an accident would be beneficial, although I worry about the rag joint letting go while I'm driving.
 
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Old Jul 16, 2016 | 03:37 PM
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Yup, I as well worry about them in bad condition, good condition no.

I personally recommend finding a good used one, as long as it's not oil soaked it should be good for many years to come.

Single D is Round stock with one flat side.
Double D is round stock with two flats sides.

I do understand the mucking around twice in there, It's a painful thing for me!

Something I'm not sure of is when the shafts changed and the lower half slides over the DD upper for the slip joint, and the lower became part of the rag joint, you are going to have to figure out how to connect to the lower half so you keep the slip joint (collapsible shaft), this is a safety feature that you really don't want to lose.

-Enjoy
fh : )_~
 
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Old Jul 16, 2016 | 05:42 PM
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Our trucks don't have collapsible steering columns, as cars have had since the '70s? And in a crash (there are no "accidents"), if the rag joint gives way, wouldn't it just hit the box and impale you anyway (unless the column collapses)?
 
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Old Jul 16, 2016 | 07:35 PM
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I'm thinking I might try and get a new rag joint and put it in, I'll measure everything while I'm at it, and if the new joint doesn't hold up I will attempt a U-joint conversion.


I don't know that I would call it a collapsible shaft, but the centre section of the steering shaft does have a slip joint in it. It looks like it is more to provide a place for things to move as the truck flexes, or in the event someone installs a body lift, but I suppose it would help a little in a front end accident.
 
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Old Jul 16, 2016 | 08:23 PM
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What I found on my trucks is that the plastic "rag joint" was just fine. It was the plastic "shim" inside the "slip joint" where the upper and lower halves join together.
I haven't found a great solution thus far, though. I've shoved shims in there, and it works for a while until it works loose. If I could find a replacement plastic shim piece by itself, that would solve a lot of problems, but I can't find one.
 
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Old Jul 16, 2016 | 09:58 PM
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Originally Posted by Macrobb
What I found on my trucks is that the plastic "rag joint" was just fine. It was the plastic "shim" inside the "slip joint" where the upper and lower halves join together.
I haven't found a great solution thus far, though. I've shoved shims in there, and it works for a while until it works loose. If I could find a replacement plastic shim piece by itself, that would solve a lot of problems, but I can't find one.
I've got a little bit of play in there too, but a lot more down at the bottom. I've been trying to think of ways to tighten that up that won't stop it from working.


One of these days, when I get a few spare minutes, I will pull the steering shaft and see what I can come up with.
 
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Old Jul 17, 2016 | 01:54 AM
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I know the shaft is telescoping; I was wondering about the column. Maybe only the OBS are collapsible?
 
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Old Jul 18, 2016 | 03:22 PM
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i have replaced my lower steering shaft in my truck.
the rag joint was done.
so i purchased some flaming river steering u-joints and DD shaft.
modified my column to accept it.
ran me about 180 bucks, they can be done cheaper with the borgenson's.
but mine are stainless steel.

everyone always says " that is not the right way"
or...
"if youre in an accident you can impale yourself"

well ill tell you from using this method for more than 20 years,
there is no more rag joint to go out on you.
it significantly improves steering play.
and if youre in a bad enough accident, that the crash ends up moving your steering box back more than 3-4" youre in a world of hurt anyways.
these are not plastic trucks.
if you get into a head on with a semi while both of you are foing 70 mph,
ill tell you... you will not be in good shape, even if you are lucky enough to keep breathing.

an OBS column is not collapsible. but it is super short.
 
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Old Jul 20, 2016 | 12:18 AM
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Yea .. i gotta agree ..

This steering column just happens to be in the middle of a great big steel sled ..

90% of vehicles on the road would be crushed like a soda can if u hit them .. walls and huge trees might be a thing .. but in that case it's already bad news
 
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Old Jul 20, 2016 | 12:33 AM
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The US Government started requiring Collapsible steering columns/shafts in 1968.

-Enjoy
fh : )_~
 
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Old Jul 20, 2016 | 01:41 AM
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Well .. i wouldn't tell them ..

The govt made alot of rules in that era and pretty much killed american muscle cars by '73 thru regulations

I'd prefer a dangerous fun wagon lol .. but it's nice to know if i plow over a prius it won't hurt my steering wheel .
 
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Old Jul 20, 2016 | 12:29 PM
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Rag joint to U-Joint?

I'm very interested in a low-cost reliable solution to this. One of Ford's major faults is this terrible sloppy steering.
I have a Red Head steering box and good steering linkage all around, just that dumb DD/slip joint with almost all of the play.
Like Rob I've put some shims in there but they only work so long. I used spare feeler shims I had which worked great for a while. Still hard to get down there to install them.

I was thinking of drilling through the outer shaft and tapping the hole, then using a small, mild steel bolt to pinch the lower shaft "solid". Then in a crash the bolt would easily give way.
Essentially it would be a set screw.
Thoughts? Other ideas?
 
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Old Jul 21, 2016 | 02:04 AM
  #15  
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Sounds like it'd be a good way to tackle the problem. ..

This might sound stupid but what is a dd /slip joint anyway? My steering is oK .. not perfect but i just figured it was a little loose b'cause 4x4 ..

If i fix this dd joint would it titen up that occasional left right wander? Is that the issue ? Pics ?
 
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