Strength of rear axles and drive shafts

Jinxx · 08-30-2018, 04:52 AM

What is the strength of the axels and drive shafts with drag radials ... is there a range where they become a issue or is it to random .. I can’t really find any info about it

Spooler · 08-30-2018, 11:57 AM

They become an issue around 600-650hp. Get above that and you will need some DSS Pro Level axles.

Jinxx · 08-30-2018, 04:51 PM

Quote:

Originally Posted by Spooler

They become an issue around 600-650hp. Get above that and you will need some DSS Pro Level axles.

So it’s more axel issue than driveshaft ? I would assume TQ around 550+ at that hp range as well

Spooler · 08-30-2018, 08:02 PM

Yes, I am sure the driveshaft may be an issue somewhere. No sure on that one.

CRiZO · 08-30-2018, 09:22 PM

By design the axles should fail first. Our driveshaft is carbon fiber I believe, so I can't imagine what replacing one would cost.

Rusty · 08-30-2018, 10:18 PM

Quote:

Originally Posted by CRiZO

By design the axles should fail first. Our driveshaft is carbon fiber I believe, so I can't imagine what replacing one would cost.

$1,238.99.

JARblue · 08-31-2018, 09:25 AM

FWIW, most are putting on $2000 1000hp rear axles before considering replacing the OEM driveshaft.

Jinxx · 08-31-2018, 10:18 PM

Just wondering what are the odds of the factory breaking ..haven’t seen much info on them breaking ...do most people not change them unless they build bottom end of the motor I mean 600-650 hp is more less the upper end without building

jchammond · 09-01-2018, 04:22 AM

Quote:

Originally Posted by Jinxx

Just wondering what are the odds of the factory breaking ..haven’t seen much info on them breaking ...do most people not change them unless they build bottom end of the motor I mean 600-650 hp is more less the upper end without building

I’ve seen stock everything go 1.50sec.60’.
That’s hooking pretty dang good; for a 3300-3400-Z (minus driver).
Shouldn’t be an issue for you, unless you’re launching harder than that...Most of your lower 10sec & the (1) high 9sec 1320ft. Z , use full blown drag slicks.
As mentioned above: axles are weaker than driveshaft: So if you’re fortunate to have that much power to the wheels & launching hard enough to break an axle,,,I’d say congratulations. As not many people have actually done it.
0 reports that I’ve seen on CF driveshaft breaking.
You must be getting loaded up & running in Darlington soon?
Unsure when you go,,,I’d like to come out.
I’ve ran @CarolinaDragway a few times in Jackson SC.
A 10sec. Pass would be awesome

JARblue · 09-01-2018, 05:10 AM

Quote:

Originally Posted by jchammond

0 reports that I’ve seen on CF driveshaft breaking.

I've seen one. But it wasn't due to power. The damage was caused by an idiot who didn't reconnect the exhaust piping.

370z Driveshaft Melted

Jinxx · 09-01-2018, 08:04 AM

Quote:

Originally Posted by jchammond

I’ve seen stock everything go 1.50sec.60’.
That’s hooking pretty dang good; for a 3300-3400-Z (minus driver).
Shouldn’t be an issue for you, unless you’re launching harder than that...Most of your lower 10sec & the (1) high 9sec 1320ft. Z , use full blown drag slicks.
As mentioned above: axles are weaker than driveshaft: So if you’re fortunate to have that much power to the wheels & launching hard enough to break an axle,,,I’d say congratulations. As not many people have actually done it.
0 reports that I’ve seen on CF driveshaft breaking.
You must be getting loaded up & running in Darlington soon?
Unsure when you go,,,I’d like to come out.
I’ve ran @CarolinaDragway a few times in Jackson SC.
A 10sec. Pass would be awesome

I’m no where near that power level ...and I’m am heading to darlington in September ...Just trying to get all my ducks in a row before hand ..better to know average limits

Rusty · 09-01-2018, 01:28 PM

Quote:

Originally Posted by JARblue

I've seen one. But it wasn't due to power. The damage was caused by an idiot who didn't reconnect the exhaust piping.

370z Driveshaft Melted

I remember that thread.

jwick · 09-01-2018, 02:39 PM

Tony has broken a couple axels in his G35 sedan HR at the drag strip. Not sure what time he was running but I’d guess 600-650whp.

Jinxx · 09-01-2018, 08:42 PM

Quote:

Originally Posted by jwick

Tony has broken a couple axels in his G35 sedan HR at the drag strip. Not sure what time he was running but I’d guess 600-650whp.

What kinda tire ? Slicks or drag radials ?

jwick · 09-01-2018, 10:23 PM

Quote:

Originally Posted by Jinxx

What kinda tire ? Slicks or drag radials ?

I don’t recall but they were street tires

08-30-2018, 04:52 AM	#1 (permalink)
Jinxx Track Member Join Date: Dec 2015 Location: South Carolina Posts: 699 Drives: 2017 nismo 370z Rep Power: 3375	Strength of rear axles and drive shafts What is the strength of the axels and drive shafts with drag radials ... is there a range where they become a issue or is it to random .. I can’t really find any info about it

08-31-2018, 09:25 AM	#7 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	FWIW, most are putting on $2000 1000hp rear axles before considering replacing the OEM driveshaft. Spooler likes this. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

09-01-2018, 02:39 PM	#13 (permalink)
jwick A True Z Fanatic Join Date: Dec 2010 Location: Houston Posts: 14,532 Drives: '10 G37 6MT Rep Power: 2465056	Tony has broken a couple axels in his G35 sedan HR at the drag strip. Not sure what time he was running but I’d guess 600-650whp. __________________ '10 G37T 6MT Graphite/Graphite - BP - G37T Build

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08-30-2018, 11:57 AM	#2 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,797 Drives: 2013 Nismo 370z Rep Power: 2684392	They become an issue around 600-650hp. Get above that and you will need some DSS Pro Level axles.

08-30-2018, 08:02 PM	#4 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,797 Drives: 2013 Nismo 370z Rep Power: 2684392	Yes, I am sure the driveshaft may be an issue somewhere. No sure on that one.

08-30-2018, 09:22 PM	#5 (permalink)
CRiZO Track Member Join Date: Nov 2017 Location: Dallas Posts: 672 Drives: in traffic Rep Power: 20698	By design the axles should fail first. Our driveshaft is carbon fiber I believe, so I can't imagine what replacing one would cost.

08-31-2018, 10:18 PM	#8 (permalink)
Jinxx Track Member Join Date: Dec 2015 Location: South Carolina Posts: 699 Drives: 2017 nismo 370z Rep Power: 3375	Just wondering what are the odds of the factory breaking ..haven’t seen much info on them breaking ...do most people not change them unless they build bottom end of the motor I mean 600-650 hp is more less the upper end without building