14 bolt full float hubs on a cruiser axle housing ????????

[AXLE CRAFT]

this was an idea I am toying with. well there are no photoes as i am building the first one when i get caught up.

specs : machined 14 bolt spindles to fit the cruiser housing.
machined hubs for 6 lug and disk brakes
yukon chromo 30 spline shafts.

estimated price is around 1100 for the complete kit

LIFETIME WARRANTY ON AXLES AND HUBS

ANY INTEREST OR DRAWBACKS.

Your weak link will still be the pinion. but never an axle shaft.

kit can be fully customized for any width.

 

[chicago]

Dude....
You're coming up w/ some GREAT STUFF for cruisers rears.
So this idea you have, if I understand correct, would convert a SF rear to a full float w/ 14 bolt hardware!?!?
I AM LOVING THIS as an option!!
Looking down the road at 14 bolt rear which seemingly would be way overkill for the way I wheel, but upgraded cruiser axles would be a great, less work option.
I try to go easy on my rig, but...a little piece of mind goes a long way!!

 

[69LC]

I was going to do this with a 9" until I stumbled upon a complete 14 bolt to narrow. My incomplete first version has the 14B spindles lathe turned to weld into the bearing ends of the 9" and then narrow the tubes for WMS width. If the 14B shafts you get are long enough, you could have them cut down and resplined to work with the Cruiser diff. It would work for a 31 spline 9", so I don't know why not with cruiser 30 splines. The working diameter of the 14B shaft is slightly larger than either of the lighter axle splines above and cutting splines into it shouldn't go through the heat treated area. To do this with a Cruiser offset, you would likely need a C&C long shaft (42.5" under the flange to spline tip) and whatever other shaft for the short side.

 

[Bret]

How much stronger is the 9" pinion versus the cruiser pinion? I am aware of the extra support bearing, but the pinion I broke was at the splined end. Is that traditionally where they fail?

I have heard of the uber expensive 9" stuff but what do you get for the extra coin?

 

[AXLE CRAFT]

I was going to do this with a 9" until I stumbled upon a complete 14 bolt to narrow. My incomplete first version has the 14B spindles lathe turned to weld into the bearing ends of the 9" and then narrow the tubes for WMS width. If the 14B shafts you get are long enough, you could have them cut down and resplined to work with the Cruiser diff. It would work for a 31 spline 9", so I don't know why not with cruiser 30 splines. The working diameter of the 14B shaft is slightly larger than either of the lighter axle splines above and cutting splines into it shouldn't go through the heat treated area. To do this with a Cruiser offset, you would likely need a C&C long shaft (42.5" under the flange to spline tip) and whatever other shaft for the short side.

All my shafts are cut from yukon blanks. i can make whatever length you want.

 

[69LC]

[QUOTE i can make whatever length you want.[/QUOTE]

Someday, but for right now, homebrew fits the budget.

Will definitely keep you in mind. I don't intend to use my rednecked shafts too long, but just to get rolling and to get my custom length dimensions dialed in before buying new custom pieces.

 

[Mace]

What's the benefit over a stock FF rear axle?

 

[Slowerthanu]

What's the benefit over a stock FF rear axle?

Maybe locating one?

Are the bolts on the 14 bolt FF significantly larger than the Toyota FF

 

[AXLE CRAFT]

if you r talking about the axle flange bolts then yes. i use grade 8 - 7/16x14 cap head Allen bolts.

 

[Tapage]

how much more strength you have there compared to stock 10mm ..?

 

[AXLE CRAFT]

Approximately 3 tonnes per bolt. cruiser flange 6 bolts @ 6k each = 36k lb provided each bolt is applied equally.
approximately 9 tonnes per bolt. 14 bolt flange 8 bolts @ 18 k each = 144k lp provided each bolt is applied equally.

now that is a little unfair as the cruiser axles use cone washers to increase load capacity and distribution. and 2 less bolts.





An 8.8 M10 bolt in shear will take over 3 tonnes in shear


could not find a metric chart.

american chart.

Shear strengths of bolts by diameter

Bolt Tensile Strength (Breaking Strength - pounds)

Bolt
Diameter
(inches) Grade 2 Grade 5 Grade 8
Coarse Fine Coarse Fine Coarse Fine
1/4 2350 2700 3800 4350 4750 5450
5/16 3900 4300 6300 6950 7850 8700
3/8
7/16 7850 8800 12800 14400 15900 17800
1/2 10500 11800 17000 19200 21300 24000
9/16 13500 15000 21800 24400 27300 30400
5/8 16700 18900 27100 30700 33900 38400
3/4 24700 27600 401

 

[Bret]

Are the stock FF flange bolts bigger than the ones on the front axle? The head may be 10mm but the bolt diameter may only be 8mm?? Not to mention the dowels that are used. Not toention the 4 pin version from Longfield.??

 

[Sputnik40]

Apples and Oranges Bret.

 

[Bret]

I was referring back to Tapage that the 10mm bolt for the Toyota flange is only a 8mm shank, and even with a 6 pin flange it is pretty small compared the the 8 - 7/16 bolts on a 14B. Just wasn't sure about the bolt/flange set up onn the Toyota FF set up.

 

[69LC]

14B uses 8 1/2" bolts. I will be using button head allen bolts with the sides of the head turned down to go with my turned down hubs.

see post #46 in MyBlueToy's thread:

https://forum.ih8mud.com/hardcore-corner/543649-fj40-4-link-up-front-soa-rear-3.html

 

[AXLE CRAFT]

14B uses 8 1/2" bolts. I will be using button head allen bolts with the sides of the head turned down to go with my turned down hubs.

see post #46 in MyBlueToy's thread:

https://forum.ih8mud.com/hardcore-corner/543649-fj40-4-link-up-front-soa-rear-3.html

I could be wrong. But i have never seen a 1/2" bolt in a 14 bolt hub in stock form.

I have been messing with 14 bolts for over 20 years.(rebuilt my first one @ 13 with help from my dad).

 

[69LC]

That's interesting! I have only been able to match the threads on the hub flanges with 1/2-13 thread on multiple hubs myself.

 

[Bret]

Either will have a good bit more meat than a Toyota FF hub then.

 

[69LC]

Conisderably!

 

[69LC]

I was just checking out BillaVista's 14B bible stuff and ran across this page while looking for shave info:

Pirate4x4.Com - Extreme Four Wheel Drive

He lists 1/2" bolts at the flange as well.