Broken semi float trail fix idea - JKowners.com : Jeep Wrangler JK Forum
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post #1 of 24 Old 11-28-2018, 04:11 PM Thread Starter
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Broken semi float trail fix idea

Ok so all the talk about axles got me thinking about trail fix options for my semi float. Tell me how stupid this sounds, or how far you think it would get you.

Let's say you break a ring/pinion on the trail. Would it work to have a couple cheap semi float shafts with the spline end cut off, just so you could keep the wheel attached? Then just remove the rear drive shaft and use 4wd as FWD?

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post #2 of 24 Old 11-28-2018, 04:20 PM
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The JK semi float is not a c clip axle like the Dana 35 or GM 10 bolt. A broken shaft or R&P won’t cause the wheel to fall off. They have the bearing and flange pressed onto the shaft out by the wheel. Your idea would work for a grenaded R&P, but that is a lot of work to change both shafts, and pull the driveshaft on the trail most likely in a mud puddle or on a bunch of sharp rocks. It is also a lot of parts, and tools to carry for something that I have personally never seen happen.

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post #3 of 24 Old 11-28-2018, 05:52 PM Thread Starter
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Yeah you're right I know it wouldn't be fun to pull shafts in some rocks, the thought process was just that it'd be better than blowing up everything else. I've always got the tools with me that'd allow me to remove/replace them anyway.

Anyway that's an interesting point that with all the talk of a D44 not being worthy of 37s, you haven't seen anyone mess up their gears on a trail.

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post #4 of 24 Old 11-28-2018, 05:55 PM
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Screw all that. Strap it to the biggest baddest to in your group and drag it out. Who's going to want to carry 200 lbs in parts, 200 lbs in told and spend 4 hours stripping an axle in the woods on ground conditions that munched your axle? Drag that broken turd out and fix it at home or in the lot while your Jeep buddies go enjoy the day off Jeeping.

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post #5 of 24 Old 11-28-2018, 05:58 PM
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Quote:
Originally Posted by chitown35 View Post
Ok so all the talk about axles got me thinking about trail fix options for my semi float. Tell me how stupid this sounds, or how far you think it would get you.

Let's say you break a ring/pinion on the trail. Would it work to have a couple cheap semi float shafts with the spline end cut off, just so you could keep the wheel attached? Then just remove the rear drive shaft and use 4wd as FWD?
I read someone asking something similar before, but with some sort of bushing, bearing, or guide to help support the axle shaft inside the housing. Not sure if it would work.
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post #6 of 24 Old 11-28-2018, 06:02 PM Thread Starter
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Quote:
Originally Posted by larry0071 View Post
Screw all that. Strap it to the biggest baddest to in your group and drag it out. Who's going to want to carry 200 lbs in parts, 200 lbs in told and spend 4 hours stripping an axle in the woods on ground conditions that munched your axle? Drag that broken turd out and fix it at home or in the lot while your Jeep buddies go enjoy the day off Jeeping.

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And your carrier and housing survive that drag?

Also, I bet I could do it in not much longer than 2 1/2 hours. Hour for each shaft and 30 minutes driveshaft (flange type). An hour if there's help in parallel.

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post #7 of 24 Old 11-28-2018, 06:04 PM
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Quote:
Originally Posted by chitown35 View Post
And your carrier and housing survive that drag?

Also, I bet I could do it in not much longer than 2 1/2 hours. Hour for each shaft and 30 minutes driveshaft (flange type). An hour if there's help in parallel.
Why would my carrier be on the ground? You'd be dragging my sliding tires at worst.

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post #8 of 24 Old 11-28-2018, 06:06 PM Thread Starter
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Quote:
Originally Posted by larry0071 View Post
Why would my carrier be on the ground? You'd be dragging my sliding tires at worst.

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I was thinking rolling tires as you dragged, no?

Edit: With who knows what stuck in or going on in the diff/gears.

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post #9 of 24 Old 11-28-2018, 06:13 PM
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If the tires roll, your doing great! If they skid, something is wedged in... Drag it harder.

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post #10 of 24 Old 11-28-2018, 06:23 PM Thread Starter
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LOL. I guess you have a point, not sure if the dragging tires on the ground would generate enough torque to break anything else in there.

Of course it still might take just as long to get it out that way depending on where you're at.

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post #11 of 24 Old 11-28-2018, 06:28 PM
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Broke is broke. Your going to dump it into the trash and start over no matter what. I'm all for tail fixes if it's reasonable and saves the day to get back to wheeling. Otherwise, drag it out and get it on the trailer or call a wrecker.

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post #12 of 24 Old 11-28-2018, 07:16 PM
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Quote:
Originally Posted by chitown35 View Post
Ok so all the talk about axles got me thinking about trail fix options for my semi float. Tell me how stupid this sounds, or how far you think it would get you.

Let's say you break a ring/pinion on the trail. Would it work to have a couple cheap semi float shafts with the spline end cut off, just so you could keep the wheel attached? Then just remove the rear drive shaft and use 4wd as FWD?

Just pull the rear drive shaft, let the R/P keep crunching as you limp along (towed along) in FWD. Rear is already toast anyway

If it really bothered you, you could pull both axle shafts, remove the carrier, unbolt the ring from the carrier, then slap everything back together...
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post #13 of 24 Old 11-28-2018, 09:37 PM
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The shaft entering the carrier is somewhat structural to holding up the vehicle on a semi-float. Cutting the splines off wouldn't even be that functional. I carry spare shafts due to semi-float design (especially on long road-trip destinations with no trailer), but you can be sure they still have the splines on them! I think it's far more likely a complete shaft is going to be useful than a shaft cut in half.
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post #14 of 24 Old 11-29-2018, 05:53 AM
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Yup. Just carry a full spare.

...and unlike some people who'll complain your wheel will fall off, out of all the millions of rigs running SF, how many wheels have actually "fallen off"...

.00000000000001%

That's why you have insurance and flat-bed tow trucks for.

Go buy a Powerball Lotto ticket LMAO
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post #15 of 24 Old 11-29-2018, 06:52 AM
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You would be better off just pulling the R&P if you bust them and dont want to drag it out. Hope you are carrying a clean upkit for the oil that is going to spill out.

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post #16 of 24 Old 11-29-2018, 06:58 AM
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Quote:
Originally Posted by chitown35 View Post
Let's say you break a ring/pinion on the trail. Would it work to have a couple cheap semi float shafts with the spline end cut off, just so you could keep the wheel attached? Then just remove the rear drive shaft and use 4wd as FWD?
Quote:
Originally Posted by Mason View Post
The JK semi float is not a c clip axle like the Dana 35 or GM 10 bolt. A broken shaft or R&P won’t cause the wheel to fall off.
Quote:
Originally Posted by DJ1 View Post
Yup. Just carry a full spare.

...and unlike some people who'll complain your wheel will fall off, out of all the millions of rigs running SF, how many wheels have actually "fallen off"...

.00000000000001%

That's why you have insurance and flat-bed tow trucks for.

Go buy a Powerball Lotto ticket LMAO
The question is around what to do if the R&P breaks, not a shaft. Are you saying he should carry a spare R&P everywhere?


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post #17 of 24 Old 11-29-2018, 07:49 AM
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Originally Posted by ALASHA View Post
The question is around what to do if the R&P breaks, not a shaft. Are you saying he should carry a spare R&P everywhere?

It's already been mentioned to pull the drive shaft or pull the ring from the carrier....
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post #18 of 24 Old 11-29-2018, 07:49 AM
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If it really bothered you, you could pull both axle shafts, remove the carrier, unbolt the ring from the carrier, then slap everything back together...


....
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post #19 of 24 Old 11-29-2018, 08:16 AM
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@chitown35

...and aside from the r/p since I know you might be interested in the "wheel falling" off scenario of a semi-float axle shaft....

...and if we assumed 2018 sales figures to also be in the 190,000 wrangler sales as well, there are an estimated 1,830,454 Wranglers (2006-2018) across the USA.

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For the 1 apparently documented case of a tire rolling off a snapped semi-float axle shaft, that equates to a
0.000000546% occurrence.

We'll be just fine man...
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post #20 of 24 Old 11-29-2018, 09:43 AM Thread Starter
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Yeah obviously removing the gears/carrier is a fine option. Is that more fun or less to do on the trail compared to the alternative though?

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post #21 of 24 Old 11-29-2018, 09:56 AM
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Quote:
Originally Posted by spinuck View Post
I read someone asking something similar before, but with some sort of bushing, bearing, or guide to help support the axle shaft inside the housing. Not sure if it would work.

Worse case MacGyver situation for my setup, I'm going to use ~3.5" thick rubber grommets, stack 2 or 3 together, sliding it over what's left of the axle shaft, then will secure it on each side of the grommet with 2 1.5" ID tube clamps...

Inner support done. Diff oil will allow *the* shaft to slip/rotate but still serve as inner support.

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Could also try and use a large bearing with set screws which I also have and fit it with a large rubber grommet, put it on for worse case scenario...

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Roll with it until you can't no more. There's options...

Last edited by DJ1; 11-29-2018 at 10:19 AM.
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post #22 of 24 Old 11-29-2018, 10:16 AM
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Quote:
Originally Posted by chitown35 View Post
Yeah obviously removing the gears/carrier is a fine option. Is that more fun or less to do on the trail compared to the alternative though?

Removing the ring from the carrier will take quite a bit of time.

I'd rather pull the rear drive shaft which will take 30 mins tops (at least for me with a 1350 drive shaft) since it's only 4 bolts at the transfer case flange and the 2 u-joint straps at the yoke.

If you're still running a stock axle shaft, it's quite a few bolts you'll have to undo. The ones on the transfer case end can be a bitch to get to. I'd upgrade your rear drive shaft (if you haven't) on that fact alone...
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post #23 of 24 Old 11-29-2018, 10:37 AM Thread Starter
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Yeah I've currently got a 1350 rear, flanges both ends.

I've dealt with all those rzeppa bolts more than enough for 2 lifetimes (although still running the high angle one in the front).
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post #24 of 24 Old 11-29-2018, 10:47 AM
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Quote:
Originally Posted by chitown35 View Post
Yeah I've currently got a 1350 rear, flanges both ends.

I've dealt with all those rzeppa bolts more than enough for 2 lifetimes (although still running the high angle one in the front).

nice man. all good
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