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Bad Axles

TFLB

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We have twin MY 22 eco Xl's at work (parts delivery) one started the death wobble around 18k miles the other is fine at 22k. Waiting at the dealership for back ordered axles for both sides. It's not just a hybrid problem.
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710-oil-614

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Add in the fact that it's one of the cheapest vehicles on the market and that doesn't help. People want their cake and they want to eat it too...
Probably a combination of -

1. First time truck buyers (due to price) who want it to be a full size truck
2. Full size truck buyers who have downsized and believe it should still be a full size truck.

I absolutely love my Tremor - but I understand it has limitations.

I invite folks to go over to Bronco6G.com and read up on all the issues a "truck" has when you lift it, add larger tires, take it off roading, haul and tow....it's not just the Maverick.
 

brielee3

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Lane

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I've run a forum search and read most of the threads where axle issues have been reported.

Where are the mechanics and engineers? There is a lot of speculation as far as cause, but it seems like a lot of the talk is adding FUD and very little value. The opinions would mean more to me if they came from those with knowledge and experience.

I've started doing some research because an altitude adjustment is likely in my Mav's future.
  • On my 2023 XL hybrid w/ stock ride height and stock wheels/tires, a digital angle gauge tells me that the axle angle is 12 degrees.
  • I did a Google search of 'optimum CV axle angle' and took a look at a sampling of the sources returned. Consensus seems to be 22 to 30 degrees is the max. I only found one reference to "optimum" on a racing forum where the poster suggested zero degrees which seems logical, but I'm not putting a lot of faith in that. One data point is not enough.
No idea if a typical lift pushes the max. So I wonder if durability/longevity is also affected by the design of whatever's inside the joint, or even the quality of the steel, machining, internal lubrication, etc.

Doesn't it seem logical that lowering the vehicle, which would reduce the angle, would also reduce the stresses on the joints? If there are other adverse affects to flattening a CV joint angle that someone is aware of, please point me to the relavant reading. In reading all the forum threads, I didn't keep track of who had issues with stock vs. lifted vs. lowered and I now wish I'd paid more attention to that.
 

fossil

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  • On my 2023 XL hybrid w/ stock ride height and stock wheels/tires, a digital angle gauge tells me that the axle angle is 12 degrees.
  • I did a Google search of 'optimum CV axle angle' and took a look at a sampling of the sources returned. Consensus seems to be 22 to 30 degrees is the max. I only found one reference to "optimum" on a racing forum where the poster suggested zero degrees which seems logical, but I'm not putting a lot of faith in that. One data point is not enough.
+ or - 12deg? Wheel down compared to the trans would be -.
if - it wouldn't take a lot of lift to get to 22deg or much slam to get to optimum.
I'm with you and the racing forum that 0deg would be ideal, less friction loss.

PS tire size doesn't effect axle angle but load in truck does.
 
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Joe Mac

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Ok, would an easy fix just to put the tremor axles on or are they longer?
I
 

Lane

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+ or - 12deg? Wheel down compared to the trans would be -.
On the stock truck at rest, the wheel hub is lower than output of trans. So the axle angles downward. Bad pic of mine using a flashlight:

Ford Maverick Bad Axles stock CV - 12 degrees


Again, these are fronts on my FWD.
 

fossil

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On the stock truck at rest, the wheel hub is lower than output of trans. So the axle angles downward. Bad pic of mine using a flashlight:

stock CV - 12 degrees.JPG


Again, these are fronts on my FWD.
that would be -. thanks for the photo.
 

fossil

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Ok, would an easy fix just to put the tremor axles on or are they longer?
I
doubt if they are longer, that would be the Raptor version 😁 but hopefully the trans splines are the same as I would expect.
 
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We have twin MY 22 eco Xl's at work (parts delivery) one started the death wobble around 18k miles the other is fine at 22k. Waiting at the dealership for back ordered axles for both sides. It's not just a hybrid problem.
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Anyone having issues with front axles? My front end was shaking when accelerating at about 15K miles and the axles were replaced by dealership under warranty. I now have 36K miles with the same issue, 2022 XL Hyrid.
My front end started shaking when I accelerate at about 10,000 miles. contacted dealership and was told no available appointments for evaluation until the end of October. 2023 XLT Hybrid 8 months old
 

RedRider

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. . .
  • I did a Google search of 'optimum CV axle angle' and took a look at a sampling of the sources returned. Consensus seems to be 22 to 30 degrees is the max. I only found one reference to "optimum" on a racing forum where the poster suggested zero degrees which seems logical, but I'm not putting a lot of faith in that. One data point is not enough.
. . .
That "racing" guy doesn't have a clue what he is talking about. 0 degrees is definitely not optimal. At that angle you will not get the grease circulating at all, and the bearings will fail really early. The same is true on a driveshaft, where the U-joints should be at a 2-3 degree angle so that things actually move and the joints get new lube with every rotation and don't wear the races and needles at exactly the same points all the time. Realistically, you can bet that the Ford engineers designed the CV joint angles to be somewhere in the 10-15 degree area, and lifting it past that will probably take the joint and/or the boot out of spec. For the same reason, running all the time at max load (and therefore max squat) is also a dumb idea.
 

fossil

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That "racing" guy doesn't have a clue what he is talking about. 0 degrees is definitely not optimal. At that angle you will not get the grease circulating at all, and the bearings will fail really early. The same is true on a driveshaft, where the U-joints should be at a 2-3 degree angle so that things actually move and the joints get new lube with every rotation and don't wear the races and needles at exactly the same points all the time. Realistically, you can bet that the Ford engineers designed the CV joint angles to be somewhere in the 10-15 degree area, and lifting it past that will probably take the joint and/or the boot out of spec. For the same reason, running all the time at max load (and therefore max squat) is also a dumb idea.
yes if you were driving without suspension travel. accelerating braking left and right turns all flex the suspension changing angles. racing isn't a highway road trip.
 

Lane

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That "racing" guy doesn't have a clue what he is talking about.
Thank you for your input and the time you've taken to share it. That "racing" guy is just a random guy on the internet, but to my view, so are you. So is each of us. There is a difference between speaking authoritatively on a topic and being an authority on a topic. In my original post, I expressed sadness with a lot of talk that is spreading questionalble info, and not feeling like any of it is particularly trustworthy & useful as far as FACTS go. Input from those with knowledge and experience on this topic (mechanics, engineers) would be most meaningful. Or even just info from the rest of us doing research and sharing the source of the info that opinions/conclusions are based on. So everyone, please share that because this thread needs facts and better info.

Not trying to pick on you, John. Just trying to improve the quality of the discussion. I started reading this forum more than 6mo before I ended up buying a Maverick and it's amazing what useful things people have shared here. But there is room for improvement in it as well because we've all had times where you read something and just want to beat your head on the wall.
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