Let's talk front drive shafts

[Wayne M.]

There's many different configurations for AWD systems. But however the driveline configuration, often the shafts use constant velocity CV joints and the have either center differentials or viscous / electric couplers to differentiate power percentages between the front and rear axles.

I agree with the center diff/ full time/ non switchable deal, but what does joint design have to do with it? The 1 gen Ford Escape AWD has a CV at one end and conventional cross universals at the hangar and rear diff (which houses the center diff as well as the axle diff).

 

[KATOOM]

...but what does joint design have to do with it?

Here's a great short little video which clearly shows the harmonics that can be a problem with a u-joint system and how they are NOT constant velocity joints. Also you can see what I was trying to say about the Dodge front driveshaft and why so many people experience front driveline vibrations.

 

[Wayne M.]

Thanks KATOOM, but I’ve seen that video before, and I understand the Dodge front shaft issue. In fact Ford has the same problem, with compound shaft angles.
I was just trying to understand your connection between AWD/ 4WD and cross joints vs. CV joints. I think you drew that into your comparison a couple of posts ago.

 

[JR]

I know 1410 is a Spicer size, and AAM sizes are a bit different. I know that one (the main?) reason 3 gen trucks and up have AAM components instead of the older trucks traditionally using Dana/ Spicer, is the result of a material supply/ contract dispute when DCX took over (married) Chrysler at the time of 3 gen development.
The front shaft Ozy posted has 1410 parts in it, and that raised a flag for me. So, to put my curiosity at rest, I’ve spent the last hour putting this chicken scratch chart together using a few websites including Denny’s Driveshaft, and Ft. Wayne clutch.
I’m pretty confident on the accuracy of this, and I hope we all agree. It’s obvious to me that shaft Ozy favors is a custom piece using Spicer sized joints.
Enjoy!
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Wayne, here's some info on the 13+ Ram front driveshafts. I've always found this website to be accurate through a handful of orders ive made over the years.

https://www.quad4x4.com/catalog/cat...500_Ram_3500_1410_Series_Front-CV_Driveshafts

https://www.quad4x4.com/catalog/cat...500_1410_Series_Front-CV_Driveshafts#cat_2888

I never gave it much thought that the universals were of Spicer origin because OEMs - particularly our trucks - always have a Hodge podge of parts. Engines, transmissions (except the 68RFE), transfer cases, axles, all come from outside sources. I think the AAM 1415 is real close to the 1410 Spicer but not close enough to be interchangeable. Now that you mention it one would think the 1415 would be a preferred option. There must be a reason.