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Old 11-28-2004, 01:42   #1 (permalink)
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Ran a 13.5 today, and then broke an axle

Took me orange car down for a few runs,
1st run, straight off the street (std tyres, pressure, timing etc), ran 13.52 with minimal traction at the start, and some wheel hop.
2nd run, got the tyres hotter but broke an axle on the launch, so now its time for a pair of billet axles and maybe ditch the minispool and put an LSD or LockRight centre in. (axle was going to happen sooner or later, due to runnig a mini spool on the street)

I think with decent tyres (slicks) and a bit of tweaking, i should easily see mid 12's.
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Old 11-28-2004, 01:52   #2 (permalink)
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Re: Ran a 13.5 today, and then broke an axle

Good to hear mate..
Look forwards to seeing it run down the line
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Old 11-28-2004, 06:31   #3 (permalink)
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Re: Ran a 13.5 today, and then broke an axle

I used to snap 9 inch axles until I got Moser 31 spline billet axles & matching mini spool & they have taken a fair thrashing & hung in so far.
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Old 11-28-2004, 14:35   #4 (permalink)
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Re: Ran a 13.5 today, and then broke an axle

How do you snap 9" axles? Are you guys running manual boxes? If so you need to revise driving habbits

Brenden
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Old 11-28-2004, 18:08   #5 (permalink)
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Re: Ran a 13.5 today, and then broke an axle

although not exactly weak the aussie disc braked 9 inch axles werent great.
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Old 11-28-2004, 22:10   #6 (permalink)
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Re: Ran a 13.5 today, and then broke an axle

Nah manualised C4 with 9 inch Disc brake rear end used to spin the splines right around & then snap. Car just has alot of torque.
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Old 11-28-2004, 23:49   #7 (permalink)
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Re: Ran a 13.5 today, and then broke an axle

Quote:
Originally Posted by brenx
How do you snap 9" axles? Are you guys running manual boxes? If so you need to revise driving habbits

Brenden
I think some of us are lucky and some not. I have had my mini spool and std 28 spline disc 9 inch axels in for 10 years, and checked them recently, and they havn't even started to twist. Of these 10 years, i had a toploader for about 1 of them, and all is good. All up i have done about 40,000 street kays with the spool.(I cant keep cound on the tyres it has chewed out though)
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Old 11-29-2004, 00:14   #8 (permalink)
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Re: Ran a 13.5 today, and then broke an axle

Weird I've done 5 track days and 100's of launches on slicks and not had an issue with disc brake 9" axles. My guess would be the axles had been repaired and had weld built up on them around the bearing area. As adding weld in this area weakens the axle.

As for the splines? I have 11,000n of tractive effort on launch and haven't broken a thing apart from uni's I must be lucky?

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Old 11-29-2004, 01:09   #9 (permalink)
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Re: Ran a 13.5 today, and then broke an axle

My axle has snapped off at the spline, I was able to reverse it off the track, and around to the carpark (if it broke off at the bearing, this wouldnt be possible as the wheel would be on much more of an angle or even fall off) This is a drum brake 9"

Id say my failure is due to the splines twisting from the minispool and street work with the 255's.
Probably wouldnt help that I have a very sharp 90* turn to get in and out of my garage, which would put a LOT of stress on the axles. It was always going to break one, just a matter of when - you can tell when you go around some corners, the way it tears the tyres through the corner, somethings gotta give.

I intend to replace the axles with 31 spline billets, and swap the spool with a 31 spline spool for the time being, until I can afford to get an LSD center or a Lockright center later on.
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Old 11-29-2004, 01:15   #10 (permalink)
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Re: Ran a 13.5 today, and then broke an axle

Full floating hubs would be the go mate.
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