What the FAD looks like

[Mike Pierson]

If you ever wondered what the components of the JL and JT FAD looks like inside, here you go.

 

[Ddays]

Funny, for all the complaining we've done about this little guy, has anyone ever heard of one breaking?

 

[kevman65]

Funny, for all the complaining we've done about this little guy, has anyone ever heard of one breaking?

Buddy's JL had the fork shear off on a wimpy fire road. He wasn't happy. Did the FAD delete as soon as the parts came in.

 

[wayoflife]

Funny, for all the complaining we've done about this little guy, has anyone ever heard of one breaking?

LOL - I've not been one to complain about it. In fact, I kind of like having it.

 

[wayoflife]

If you ever wondered what the components of the JL and JT FAD looks like inside, here you go.

View attachment 382073 View attachment 382076 View attachment 382074 View attachment 382075

THanks for posting this up!

 

[jal]

pretty kool

 

[Mike Pierson]

LOL - I've not been one to complain about it. In fact, I kind of like having it.

It seems I may have lost about 2 MPGs with the delete. Surprised that the one small section added so much more rolling resistance.

 

[wayoflife]

It seems I may have lost about 2 MPGs with the delete. Surprised that the one small section added so much more rolling resistance.

I believe it. In addition to improved fuel economy, I really like how it keeps the front drive shaft from spinning. This helps me to set more caster and without having to worry about driveline vibes on a u-joint style shaft or premature wearing of the CV boot on a factory shaft.

 

[Mike Pierson]

I believe it. In addition to improved fuel economy, I really like how it keeps the front drive shaft from spinning. This helps me to set more caster and without having to worry about driveline vibes on a u-joint style shaft or premature wearing of the CV boot on a factory shaft.

Wait, my front drive shaft is spinning now too?

 

[JimLee]

Wait, my front drive shaft is spinning now too?

Yup

 

[TrailHunter]

JK Owners:

 

[JimLee]

JK Owners:

View attachment 382093

Yea, but your radiator is leaking.

 

[Mike Pierson]

Yup

Going to watch the video where Jim and Eddie talk about it again. I’m not understanding this. Lol

 

[Spazbyt]

"If it ain't spinning you ain't winning!"
-JK owners

 

[JimLee]

Going to watch the video where Jim and Eddie talk about it again. I’m not understanding this. Lol

Think about how a normal open differential works, it's going to connect the side with no traction. When your FAD is disengaged you have no traction on that side however the wheel end isn't connected so it doesn't spin the diff = no driveline spin. Now that you've got a solid shaft on both sides, no matter which side the diff uses the shaft is spinning = driveline spin. In simple backyard mechanic speak.

 

[Spazbyt]

I miss locking hubs.

 

[Mike Pierson]

Think about how a normal open differential works, it's going to connect the side with no traction. When your FAD is disengaged you have no traction on that side however the wheel end isn't connected so it doesn't spin the diff = no driveline spin. Now that you've got a solid shaft on both sides, no matter which side the diff uses the shaft is spinning = driveline spin. In simple backyard mechanic speak.

Of course, thank you, not sure why I didn’t consider it as a normal diff. Lol

 

[JimLee]

I miss locking hubs.

Problem, meet expensive ass solution. I haven't seen a free spin conversion for JL D44's yet, but I haven't really looked either.

 

[Ddays]

I believe it. In addition to improved fuel economy, I really like how it keeps the front drive shaft from spinning. This helps me to set more caster and without having to worry about driveline vibes on a u-joint style shaft or premature wearing of the CV boot on a factory shaft.

Exactly this!