Greaseable polyurethane sway bar bushings

Awesomeness

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Just weeks after getting my M1078, the sway bar bushings fell apart, and were soon completely gone. I decided to make some heavy duty polyurethane replacements, and make them [optionally] greaseable.

Here's the CAD model so far...
Bushing.png

I 3D printed a prototype, to test fit, and everything looks good.

What do you guys think? Do the bushings break apart often? Are others missing them too?
 

Awesomeness

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Yeah, I had searched for, and seen, a couple of the other posts.

From an engineering perspective, urethane bushings are made firmer and greaseable, ideally. It results in less unwanted give in the bushing (better "anti-sway"), but with grease can actually result in better articulation still.
 

Awesomeness

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First one done. I've tested it, and it fits well. I used UV resistant black pigment too, to make it survive longer. I can't fully install it yet, because in order to use the greaseable feature, I have to drill and tap the bracket, and install a grease fitting. I'll order some up, and hopefully I can get it done next week.

SwayBarBushing1.jpg
 

coachgeo

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hopefully lawyers and liability insurance won't scare you out of making these available to others with an FMTV. Good luck with your test. Excited to see how it works for you.
 

Awesomeness

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hopefully lawyers and liability insurance won't scare you out of making these available to others with an FMTV. Good luck with your test. Excited to see how it works for you.
No, I don't mind. Do other people need them? Your post before made it sound like only once a year or so does someone come around looking for some. I took that to mean they weren't useful to other people.
 

coachgeo

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No, I don't mind. Do other people need them? Your post before made it sound like only once a year or so does someone come around looking for some. I took that to mean they weren't useful to other people.
sorry for not communicating well. IMHO On the contraire... they are needed and would be useful. Considering there is not a whole lot of these trucks out there being sold every year to civilians and they are all aging/aged already ...... once a year is a lot and will only continue to have increased need for these rubber parts to be replaced IMHO. Especially since another member; who like you, has had to resort to making their own since they could not find them available otherwise.

Butttt...... please also defer to others thoughts on this too. There are others in here who know far more than I do.
 

Awesomeness

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Yeah, I just got my M1078, and it seems like every week I find another rubber or plastic part that is dying. I just got a bunch of new zip ties, as I noticed those have started breaking off. I just got the gasket to replace on the air pump, that I noticed was leaking air. I just replaced both seals in the cab latch. Now I'm making these bushings! Another year of this, and she'll be like new again.
 

PanamaMV

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Another bushing thread (tie rod bushings) got me thinking about this one. Wonder if Energy Suspensions makes a universal one big enough?
To check see energysuspension.com/universal-products/sway-bar-bushings.html
 

Awesomeness

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Another bushing thread (tie rod bushings) got me thinking about this one. Wonder if Energy Suspensions makes a universal one big enough?
To check see energysuspension.com/universal-products/sway-bar-bushings.html
I did check, and Energy Suspension (and other similar providers) don't have anything close to this size.

I've made several sets of these for forum members now, and they seem to be performing very well. I have been slowly making more, as time allows.
 

Awesomeness

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I don't make the cab bushings, yet. If I can get my hands on some, or some precision measurements of some, I could make them too.
 

Awesomeness

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Those that have my sway bar bushings... how are you liking them?

I've had a chance to reverse engineer a good upper cab bushing, and hope to make one of those in the next several weeks.
 
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