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Gary Stadler (Boogiethecat)

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Posted on Friday, March 24, 2006 - 10:13 pm:   

In doing some driveline changes, I'm going to be forced into using a couple of Spicer 5-801X U-joints, which have bearings & cups that are smaller than the original ones on the bus.

I've been all over the internet trying to find the torque ratings for these and can't find a thing...

Anyone know, or know where I can dig up the info? Spicer's site seems useless...
John MC9

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Posted on Saturday, March 25, 2006 - 12:00 am:   

"In doing some driveline changes, I'm going to be forced into
using a couple of Spicer 5-801X U-joints, which have
bearings & cups that are smaller than the original ones on
the bus. "


UGH... That aside... What markings does the Spicer bolt
have? That would give you the torque rating for the bolt...
That's all you'll need to use it.

Bolt and Torque Specs
Gary Stadler (Boogiethecat)

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Posted on Saturday, March 25, 2006 - 12:54 am:   

Um... I'm looking for the amount of engine torque that the 5-801X U-joint can handle, not the bolt torques.
Sorry, I guess I wasn't clear enough.

I'm just wanting to assure myself that I won't be coming off red lights with my driveshaft rolling clankety-clankety into the curb !
(I've actually seen it happen!! )
John MC9

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Posted on Saturday, March 25, 2006 - 7:39 am:   

Gary..

If the question still doesn't get answered (I don't have it),
you might want to compare the application of each. That is,
what type vehicle and load was the 5-801X U-joint used
for, versus your original. That should put you closer to the
answer, ehh?
dick egler (Dickegler)

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Posted on Saturday, March 25, 2006 - 12:13 pm:   

Hi Gary, The chart available at the posted link might help.

http://www.hardyspicer.com.au/viewdocument.asp?TableName=tblProductVariations&FieldName=fl dProductVariationID&FieldValue=2948


My eagle used the 1710 series spicer. I had trouble finding the series of the 5-801x, but suspect it is in the 1410 series. By the information in the chart, it would seem too light for an eagle application.

However for a Crown? I dont know your engine but the chart says 250 to 375 ft lbs.

Dick
Gary Stadler (Boogiethecat)

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Posted on Saturday, March 25, 2006 - 1:31 pm:   

That was what I was looking for Dick!
It is a 1410 and I think it's going to be woefully under-rated for my rig, but I kinda have no choice.
The 5.9 cummins I have will do about 450ft pounds, and a standard 1410 is rated at only 250 continuous.
But a 1410 is rated at 374 for industrial and 1500 intermittent, and the 5-801 is an upgraded version...
So I'll carry a spare or two and I guess I'll see what happens! ...

THANKS
Gary
truthhunter@shaw.ca

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Posted on Saturday, March 25, 2006 - 4:04 pm:   

Maybe add a drive shaft guard to catch it during a break away, might prevent serious damage to the you and the vehicle behind you.
Phil Dumpster2

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Posted on Sunday, March 26, 2006 - 5:39 am:   

Don't use engine torque ratings alone to size U joints for the driveline! There are several factors that figure into driveline torque. While your engine may put out 450 foot-lbs, the driveline system must be built to handle several times that much torque.
Kyle Brandt (Kyle4501)

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Posted on Sunday, March 26, 2006 - 9:07 am:   

Another thought, your drive line sees engine torque only in high gear (assuming no losses in the transmission). When in a lower gear, the torque seen by the driveline increases by the gear ratio in the transmission.

The 5-801 will work, the question is for how long & how much abuse it will tolerate. The drive shaft catch guard is a good idea.

When we design a drive shaft system at work, we put an offset (about a 5 degeree angle at the joint) in the drive line so the needle bearings will have some rolling movement. If not, the needles 'wiggle' in the same spot & the joint fails early. Don't forget to phase the u-joints correctly or they won't last long either.

Good luck with your project!
kyle4501

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