Dynatrac free spin kits getting rid of unit bearings page 2 expedition portal


Dynatrac Free-Spin kits (getting rid of unit bearings)
With standard taper bearings, its just a matter of removing the locking hub to get to the bearings. 
You don't even have to pull the wheel& tire off. Just jack the vehicle up. 
A bit messier as you are right into it with grease, but that's it IMO.
Dynatrac Free-Spin kits (getting rid of unit bearings)
Yukon and Synergy make the conversion kits as well. Might be worth a look.
Regcabguy
Oil eater.
For Dodge guys that's a big deal.
Us Ford guys already have manual locking hubs.
I just want serviceable bearings!
The Dodge shop I use installs Dynatrac hubs on the Fords several times a year. I've had them for 8 yrs now. Same with my '85 Toyota and my '86 F-250. Manual transfer cases on all of them too. Many guys are lubing the unit hubs through the abs port and getting longer life out of them.
IdaSHO
IDACAMPER
Good to hear the good reviews of anything Dynatrac.
I've read about the supposed extended life by feeding the unit bearings grease thru the ABS hole. 
Truthfully, its probably just as fast to completely repack a set of taper bearings than bother with even getting to the ABS hole. 
You must remove the wheel/tire, caliper & bracket, and rotor to get to it.
With standard taper bearings, its just a matter of removing the locking hub to get to the bearings. 
You don't even have to pull the wheel& tire off. Just jack the vehicle up. 
A bit messier as you are right into it with grease, but that's it IMO.
Superduty
Adventurer
It looks, from the photos, that the out axle (stub shaft) is gonna be a bit longer than the original stub shaft. I suppose that means the hub will stick out farther. I think they need space for the hub and to mount two bearings. I assume the dynatrac stub is a 1480 u joint. I think at some point Ford dropped the 1480 ujoint for the 1550 axle u joint, but not sure what year. Maybe that is why the Dynatrac kit is only good to 2014?
 
The Timken replacement unit bearing/hub appears to run about $250 per side.
IdaSHO
IDACAMPER
Yes, the spindles are longer. Not sure how long, but Ive been told they are shorter than other free-spin kits. 
Considering the OEM locking hubs are actually recessed within the wheels, Im not concerned at all about anything a bit longer.
My junk is all 1480. Far as I know, the 1550 joints and shafts were exclusive to the F450/550 They are considered an upgrade for the 2005-2014 250/350 
If the 1550 ever made it to the 250/350, it may very well be a 2014/2015 change.
The 2015 to present kit is here. 

 Ford Truck Free-Spin™ Kits 
The original Dynatrac™ Free-Spin™ Heavy Duty Hub Conversion Kits are popular with off-road enthusiast as well as companies who rely on their Ford trucks for work. Free-Spin kits replace problematic unit bearings, eliminating a weak link that is prone to failure.

www.dynatrac.com
And hubs, there is ZERO reason to buy a complete timken hub once you go this route. 
If all you want to do it change hubs, you stick with unit bearings.
The rest of us that prefer serviceable bearings, we just buy bearings & races. 
Those are less than $30 per side. And again, thats assuming you ever have to actually change the bearings.
One of the biggest issues with unit bearings is that if/when the unit becomes contaminated, like with water intrusion, you are SOL. 
With serviceable bearings, not the case. Pull them out, flush them clean, inspect, repack, reinstall. 
All you are out is a bit of time and grease. And seals if you are doing it "properly"
Do this as a preventative measure, and the bearing will quite literally last the life of the truck.