broke an axle on launch at atco tonite.... pretty scary

ed hess

race or get outta the way
In a way I guess I am lucky to be alive and in one piece tonite sitting here typing this.

The truck left at 16psi. Having heard noises from the caltracs before on a launch when I heard a bang I didn’t react immediately. The datalog showed that I got off the throttle at 2.3 seconds. Keep in mind my foot is firmly planted to the firewal the moment I turn on the bottom final stage bulb. We tracked down the guy in the other lane to get the 60ft (ok so there is some humor in this). 60ft was only 1.666 (scary number there). Harry said the axle broke right at the line.
Anyway drivers rear axle broke. C-clip eliminators and aftermarket axles were going to be next in the list. So axle came out and kept going down the track. The truck crossed the line into the left lane as it was doing a 180 degree spin. The datalog showed I shut the motor down (key off at 3.3 seconds). Anyway as the tire is moving down track slower than I am. it apparently hit the front bumper. Small quarter size crack mark in the bumper cover. 1 foot area is really sticky on the paint. (all of it polished up pretty well).
Turns out I hit the mustang in the left lane. (we found him in the pits to make sure he was ok.) we didn’t know the truck hit him till we talked to him. Bent back edge of his door in a bit. So at Applebys I am trying to find damage mark on the truck as to where I hit him. I found a 1 inch rub mark on the drivers rear backup lense showing white residue from the mustang’s white body side molding. My lense has a 1 inch crack in it.
Guess you could say I was extremely lucky to not have done any serious body damage.
Oh and the drivers rear was throwing up sparks as it ground to a halt. Apparently it was sitting on the caltrac after the axle came out. No other damage to the ground effects other than the front bumper mark and a ½ inch crack on the rear drivers corner piece.

Keith expects to have new axels this coming Tuesday morning so we should be back to atco for Sunday december 5.

The employees of Atco Raceway were great in making sure I was ok and helping me get the truck back to the pits and even onto the trailer. Many thanks to them!

Ya know I don’t walk around sounding like a religious fanatic or anything, But I allways say a quick prayer in the staging lanes before a run… Think i will continue with that practice.

ed
 

myclone

Donating Member
Glad youre ok Ed.. Get you a 8.5" outta a new S truck and you can all but forget about breaking an axle anymore. C clip elims will give you the same (fi not more) piece of mind but I have yet to hear anyone say they like em.
 

TurboManiacal

Donating Member
myclone said:
Glad youre ok Ed.. Get you a 8.5" outta a new S truck and you can all but forget about breaking an axle anymore. C clip elims will give you the same (if not more) piece of mind but I have yet to hear anyone say they like em.

I'm going to have to agree with Myclone. It might take a bit more of research to make sure you get the right axle but it would definately be worth it to you to upgrade. It's your old adage - You know...while you're in there...

There are several rear end assemblies in the S-Series and the biggest one of them is the 8.5" from the ZQ8 - 4.3 V6 5sp Trucks. These are the top of the Xtreme pickups and it is found in some of the 4WD trucks but I can't say exactly which models.

When upgraded you're running nearly an inch bigger rear end from 7&5/8 to 8.5".

Take Care.
 

myclone

Donating Member
SyGoat said:
When upgraded you're running nearly an inch bigger rear end from 7&5/8 to 8.5".

Just to add some .02 to what Siggy said the turbo buick crowd has gone mid 9s (prolly faster) on a stock 8.5" diff so they are tougher than most ppl think.

If memory serves me correct the most likely place to find the 8.5" under a late S truck is when its equipped with a stick trans. Not all of em got it from my understanding but it seems I heard those are the trucks to spend time looking under in the bone yards.
 

ed hess

race or get outta the way
I just received a video of this, this morning. somebody pm or email me that can post it. you can see the sparks flying as the wheel/axle assemby comes out as it is resting on te caltrac.

ed
 

6 beats 8

New member
I seen the video Ed. Glad you have fast reflexes. Thank God you are OK! After a run with my GN, I pulled into a spot, and as soon as I turned my wheel the cotter pin holding the castle nut onto my ball joint came off along with the nut and the whole tire , break ,ball joint assembly, and everything was up inside my wheel well. Thank God it didn't happen on the run.
 

Syclone#1992

SyTy.net Moderator
Wow glad to see you are ok, Ed. You are one lucky SOB!! Always remember this; Truck can be replaced, but you can't.
 

10secTy

Sy-Ty builder and Tuner
myclone said:
Glad youre ok Ed.. Get you a 8.5" outta a new S truck and you can all but forget about breaking an axle anymore. C clip elims will give you the same (fi not more) piece of mind but I have yet to hear anyone say they like em.

I have a 8.5" with the ford bearings but GM ends. Pics on on www.canadiansyty.com. I did not want to use the bolt on c clip eliminators so instead I got a 8.5" out of a full size and had it cut to match the stock rear diff in width with the Ford style bearing ends welded on. I have zero leaks and zero worries. Axles are Bear Pro street 30 spline.

Nolan
 

ed hess

race or get outta the way
skata said:
did the axle shaft actually snap or did the clip let go?

it snaped. 3/4 of its total lenght is atached towards the wheel side.

it broke like a crystal shape.

its still on the trailer so a cant get a pic of the shaft.

ed
 

mhoover

Member
ED! thank goodness you didnt get half way down the track and this happen! thats crazy! i think the prayer b4 you race is a good idea! i do the same!

MATT
 

ed hess

race or get outta the way
yeah looks like we are leaning towrds an 8.5.... ya know then we could take the cables off the front and put it on the bumper. :D

looking at mosers and strange websites it doesnt look like anyting is availble for a 7.5. besides having given it more thought and looking at that video i dont ever want to go thru another experience like that again.

ed
 

hamrhead

Donating Member
Good to hear you're OK Ed! Must've been scary. :eek:

At least now no one can say you didn't finish up the season with a BANG! :-? j/k
 

GM TURBO

Sell Out
Ford 9"

That is some scary sh!t. Could have been a lot worse. I give you credit on getting everything shutdown as quickly as you did.
 

Turbo6

10.20@131.8
Sounds like those tires hook pretty good. I think I'll draw the line at the green dots and be happy with what they do. I am glad you are ok Ed that video looks pretty scary. Keep upgrading and throwing power to it and get the quickest awd to the states!
 
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