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5.13 gears for sterling 10.5???

JR4X said:
You can. That’s what I did in my 21 Bronco. The front locker is on a toggle switch. Full 12 volts to lock and it stays locked when I tell it to. I have two superduty e-locked rear axles for projects. I’m just going to put them on a toggle switch just like the Bronco no matter what those go in. One is slated for my OBS F350 and I don’t want any fancy crap.

I wouldn’t be brave enough to do that on my work truck until the warranty was nearing its end which comes fast. They only do us 40 or 50k on these because of what we put them through.
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What if you sourced the factory plug, then ran the wires completely separate? Then if warranty is needed, pull wires?

I mean I get what you're saying, I'd probably leave it alone also, but if you want it locked all the time, it's possible. Wonder if a cigarette lighter would power it? :laughing:
 
For whoever cares Valley Rock has probably been in posetion of more sterling and superduty axles then 99.9% of the board here. Id bet he is right, but his coment on having something around to make it work, might include the 46 axles he has laying out back .
 
415yota said:
If you look at part catalogs they don’t make the 10.25 master install kit for the 2011+ 10.5’s (the date ends at 2010 for compatibility). The pinion bearing/race OD is slightly larger on the 37 spline 2011+ 10.5 axle. This is why the 10.25 gear sets are not compatible with the 2011+ axles. So you would need a custom sleeve or something to fit the 10.25 pinion bearing/race on the 2011+ housing.
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Welp called nationaldrivetrain and they don’t have it and doesn’t seem like they will be getting them anytime soon. However the other place I found, revolutiongear, has 5.38’s and I just ordered a set. They even just posted this morning about how they just stocked up on them on IG. Pretty stoked.
 
Not sure if this belongs here but the Yukon Ford 9" part number SK CSF9-2PIECE fits the 05 sterling pinion if you want to run a Solid spacer vs crush sleeve. I have one in my sterling and its been holding up fine with Revolution 5.38 gears.

Pinion loosened up using the Revolution crush sleeve so I threw this in
 
chays2464 said:
Not sure if this belongs here but the Yukon Ford 9" part number SK CSF9-2PIECE fits the 05 sterling pinion if you want to run a Solid spacer vs crush sleeve. I have one in my sterling and its been holding up fine with Revolution 5.38 gears.

Pinion loosened up using the Revolution crush sleeve so I threw this in
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Now that's some tech ! :smokin:
 
chays2464 said:
Not sure if this belongs here but the Yukon Ford 9" part number SK CSF9-2PIECE fits the 05 sterling pinion if you want to run a Solid spacer vs crush sleeve. I have one in my sterling and its been holding up fine with Revolution 5.38 gears.

Pinion loosened up using the Revolution crush sleeve so I threw this in
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I have one in my sterling as well but haven’t run it yet.
 
I have one for my sterling but haven't assembled it yet.

"you need to round off just a little bit of the inside of the spacer due to the shape of the pinion. Otherwise the spacer will not sit flush with the pinion and will give you some all F*&ked up bearing preload. Other than that its pretty much straight forward shim it a bit to get the proper preload and you will never worry about it again."
 
subybaja said:
I have one for my sterling but haven't assembled it yet.

"you need to round off just a little bit of the inside of the spacer due to the shape of the pinion. Otherwise the spacer will not sit flush with the pinion and will give you some all F*&ked up bearing preload. Other than that its pretty much straight forward shim it a bit to get the proper preload and you will never worry about it again."
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The inside of the spacer has a small radius that needs to be removed
 
Even though revolution gear has 2011+ 5.13 and 5.38 gears available now. This video has a spacer solution in for anyone interested.

 
So how much of a strength upgrade would a 37 spline be? I have both axles, i had everything mocked up on the 2012+, then went bought and older housing, and then this comes out after switch all my brackets over to my older housing.
 
37 spline is a nice strength upgrade over 35 spline.

Basically any change in shaft diameter is raised to the power of 3.

Think of the difference in strength between a Dana 44 30 spline and a Ford 9" 31 spline. Yes, materials and design make a huge difference, but that change from 1.30" to 1.31" makes the OE Ford shaft quite a bit stronger than than the 1.30" Dana shaft.

Math for those of you who are interested: T = (π * τ * d^3) / 32
 
Tech Tim said:
37 spline is a nice strength upgrade over 35 spline.

Basically any change in shaft diameter is raised to the power of 3.

Think of the difference in strength between a Dana 44 30 spline and a Ford 9" 31 spline. Yes, materials and design make a huge difference, but that change from 1.30" to 1.31" makes the OE Ford shaft quite a bit stronger than than the 1.30" Dana shaft.

Math for those of you who are interested: T = (π * τ * d^3) / 32
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He's talking about the pinion on the '11+ gear sets.

pennsylvaniaboy between the bigger pinion shaft which should do a lot to make up for the lack of a 3rd pinion bearing and true 10.5" diameter ring, I am planning on building an '11+ axle instead of the '07 axle I have now that you can get 5.38 gears in the 37 spline flavor.
 
'84 Bronco II said:
He's talking about the pinion on the '11+ gear sets.

pennsylvaniaboy between the bigger pinion shaft which should do a lot to make up for the lack of a 3rd pinion bearing and true 10.5" diameter ring, I am planning on building an '11+ axle instead of the '07 axle I have now that you can get 5.38 gears in the 37 spline flavor.
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My bad in assuming axle shafts... But the answer is still the same if the 37 spline is larger diameter than the 35 spline.
 
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