Free-spin options and bypassing the CAD - Dodge Cummins Diesel Forum
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post #1 of 83 (permalink) Old 11-06-2017, 12:20 PM Thread Starter
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Free-spin options and bypassing the CAD

Looking to see what anyone has done if any at all, my last truck that had the CAD setup in it was nothing but a pain in the *%$ and i had nothing but issues with it, no seeing that this truck (2013 ram 3500) has the same setup for the most part i am looking at doing either the RAM MAN INC kit using the unitized hub bearing setups, which if you look at the engineering behind it, it is really solid for the most part and uses the factory style ford lockers with a machined sleeve on the inner bearing and the locker has a custom sleeve that makes it all work. Or do i go with an older style Dynatrac setup like the older D60's, where the bearing loads are spread out much further and i can get the bearings almost anywhere out there. As far as the CAD bypass there are a few companies out there that make a replacement axle shaft and a cover plate for the CAD or you can just leave it in place to avoid having to deal with the damn service 4x4 lights. Post part numbers and pics if you got em on what you did and why, trying to avoid unnecessary wear and tear o the front end if at all possible, plus i need a new axle seal on the passenger side so this is all on the list of to do's.


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post #2 of 83 (permalink) Old 11-06-2017, 12:38 PM
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I personally don't like the Ram guy type due to the load carrying capacity of the bearings. But if you're not running big tires you may get a lot of life out of them. I like the Dynatrac, or others like you said already the bearings are sourced easily, and they're spaced further apart to handle loads or bigger tires much better...not that you'll ever need to replace them, they're huge, as long as you keep them greased. Some guys don't want the hassle of greasing. That's the way I see it anyway.
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post #3 of 83 (permalink) Old 11-06-2017, 12:42 PM Thread Starter
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I personally don't like the Ram guy type due to the load carrying capacity of the bearings. But if you're not running big tires you may get a lot of life out of them. I like the Dynatrac, or others like you said already the bearings are sourced easily, and they're spaced further apart to handle loads or bigger tires much better...not that you'll ever need to replace them, they're huge, as long as you keep them greased. Some guys don't want the hassle of greasing. That's the way I see it anyway.
running 35's and out on rough roads and on a ranch quiet a bit, thats another reason that i am leaning more towards the old school style dynatrac or spyntec setups, more concerned with how far some of these hubs stick out as well, i am running these on a DRW truck but i am running a standard SRW style wheel up front so the tires aren't overly stretched on the tire with no DRW spacers of course...so i don't want the locker itself sticking out there past the tires edge itself, and i know wheel offsets and stuff like that can play a factor, but looking more so for the lowest profile hub design in the older style setups.

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post #4 of 83 (permalink) Old 11-06-2017, 12:49 PM
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running 35's and out on rough roads and on a ranch quiet a bit, thats another reason that i am leaning more towards the old school style dynatrac or spyntec setups, more concerned with how far some of these hubs stick out as well, i am running these on a DRW truck but i am running a standard SRW style wheel up front so the tires aren't overly stretched on the tire with no DRW spacers of course...so i don't want the locker itself sticking out there past the tires edge itself, and i know wheel offsets and stuff like that can play a factor, but looking more so for the lowest profile hub design in the older style setups.
I'm running Spyntec's Spin free kit on my 04 (also running 35's) and I absolutely love them. So glad I went this route as I missed the locking hubs on my old Tacoma. They do not stick out very far IMO, and I really like the way they look. My buddy with the same truck is running The Dynatrac version, he likes his as well. If you get Dynatrac's lockers they are a bit more low profile. Overall both are comparable, both top notch quality.

Added benefit is you can use low gearing in 2WD if you want for reverse purposes.

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post #5 of 83 (permalink) Old 11-06-2017, 12:55 PM
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Ya the hubs don't stick out past the wheels or tires, at least on mine. But, that's because the bearings are in there doing their job.
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post #6 of 83 (permalink) Old 11-06-2017, 01:11 PM Thread Starter
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Awesome guys thanks another big difference between the 2 is i can get the Spyntech shorty kit for 1550-1600 bucks to my door and the Dynatrac kit for 2300 to my door, so it looks like i will be giving Spyntech a try to save some coin, and from what i have found so far everyone running the spyntechs loves them and have some serious mileage on them as well with no issues.

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post #7 of 83 (permalink) Old 11-06-2017, 01:42 PM
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Awesome guys thanks another big difference between the 2 is i can get the Spyntech shorty kit for 1550-1600 bucks to my door and the Dynatrac kit for 2300 to my door, so it looks like i will be giving Spyntech a try to save some coin, and from what i have found so far everyone running the spyntechs loves them and have some serious mileage on them as well with no issues.
That would almost buy 8 unit bearings from SKF
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post #8 of 83 (permalink) Old 11-06-2017, 01:51 PM Thread Starter
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That would almost buy 8 unit bearings from SKF
I don't have the time or the want to to deal with x8 unit bearings personally....i would rather do this right and do it 1 time, plus having the older style stuff is easier to repair for the most part as well as getting bearings and keeping a set of bearing in the truck for emergencies is a hell of a lot less space consuming and cheaper than a whole unitized setup, i ran my old kingpin d60 on my dmax silverado front end and beat the hell out of that thing and never skipped a beat, i don't mind spending the extra if it saves me time and is more reliable than these unitized weak hubs!
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post #9 of 83 (permalink) Old 11-06-2017, 01:54 PM
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I had the Ram man's hubs on my 12' and the worked well with my 35's. He uses a ford 3500 tapered roller bearing and the design is great but the one Flaw that I didn't like is the axle stubs just floated inside the unit bearing with no clip or anything to hold it!! Seems to put the axle weight on the bearing, I only had them for about 15,000 miles so I don't know about the longevity of the units!! If I were to do it again I would probably go another Route!!!

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post #10 of 83 (permalink) Old 11-06-2017, 02:16 PM
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Had the DynaTrac setup on my '14 2500 and loved it.
When time and money permits, the '17 will get DynaTrac, too. I can't change the laws of physics, so the tried and true spindle with widely spaced bearings is the logical choice to me.
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post #11 of 83 (permalink) Old 11-06-2017, 02:28 PM
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I did the Spyntec (Solid Axle) hub conversion on my last truck. I have the same sitting in my garage waiting to be installed for this one as well. Just have to wait till I can get some new wheels as the conversion wont fit with the Longhorn 18" wheels I have.

Still hoping for a CAD delete though, I was hugely disappointed they brought that back.


Last edited by battlerattle; 11-06-2017 at 02:50 PM.
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post #12 of 83 (permalink) Old 11-06-2017, 02:38 PM
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Will go with DynaTrac on my 06 when the time comes for the front wheel bearing.
Hopefully later rather than sooner.

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