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HQ stud pattern, Commodore wheels

Started by _evil UC hatch_ , Dec 30 2009 09:55 PM

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121 replies to this topic

#26 _CHOPPER_

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Posted 18 October 2011 - 08:32 AM

Could be, but it's very hard to diagnose sitting at my keyboard.

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#27 Statler

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Posted 18 October 2011 - 11:44 AM

i just measured my stud pattern hq or commo, from the centre of each stud they measure 70mm and the hub diameter is also 70mm. i had my rear axle stud pattern changed from torana to hq, but the studs are very close to the edge of the stud plate/hub if wish on the rear axles- only 2.8mm. im now worried if it right or safe!
as i'am putting 15x10 on them i don't want them over taking me or at worst killing me and my family. any info would be great.

Sounds like somebody has redrilled a Q PCD onto a Torana axle!

I definately wouldn't be putting 10's on that!

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#28 _A9XOSS_

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Posted 08 November 2011 - 07:22 PM

well i'am going to be using 14 x 6 gts wheels on it now, here's a some pic's of what Ihad done to the axle's. he said they are fine but hmmm i don't know? :huh:

IMG_0153 (800x598).jpg 298.53K 10 downloads

IMG_0154 (800x598).jpg 291.77K 5 downloads

IMG_0155 (800x598).jpg 294.34K 5 downloads

Edited by A9XOSS, 08 November 2011 - 07:24 PM.

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#29 _Viper_

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Posted 08 November 2011 - 07:37 PM

That sure doesnt look right/safe?

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#30 _CHOPPER_

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Posted 08 November 2011 - 08:17 PM

Bin the axles, nobody puts the studs at the very edge of the axle for very good reason.

Support.

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#31 _A9XOSS_

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Posted 08 November 2011 - 08:26 PM

Hmm, should I try and get my money back? As he is a business. I still have a receipt there somewhere. Thanx for the info/advise.

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#32 _CHOPPER_

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Posted 08 November 2011 - 08:30 PM

They need a certain amount of metal around the studs, otherwise they have the potential to "pull through".

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#33 _CHOPPER_

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Posted 08 November 2011 - 08:36 PM

Try get a refund and sting them for another pair of axles.

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#34 dattoman

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Posted 08 November 2011 - 08:39 PM

Looking at a set of Commodore axles I have here... they are abit close to the edges
But looking at the Hoppers front brake hubs... well... they are very similar to what you have posted
But they are K1045 steel and probably alot stronger than those axles

Not sure I'd be using those ones you have personally

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#35 ls2lxhatch

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Posted 09 November 2011 - 01:15 PM

I don't like the look however I think that the stud would snap long before there was any chance of it pulling out.

I have heard of people machining a ring that is pressed onto the axle and welded to make the flange a larger diameter.

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#36 _A9XOSS_

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Posted 09 November 2011 - 01:17 PM

Hmm I like this option sounds good in theory, I will see if he'll fix them by doing this. Thanx everyone.

.
I don't like the look however I think that the stud would snap long before there was any chance of it pulling out.

I have heard of people machining a ring that is pressed onto the axle and welded to make the flange a larger diameter.

Edited by A9XOSS, 09 November 2011 - 01:20 PM.

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#37 _A9XOSS_

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Posted 12 November 2011 - 01:53 PM

I have decided to change the axles all together, going to get 28 spline hq/z axles shortened and re-spline. That way I know they'll be right and most of all SAFE. Cheers.

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#38 _rob350hatch_

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Posted 12 November 2011 - 03:44 PM

I have decided to change the axles all together, going to get 28 spline hq/z axles shortened and re-spline. That way I know they'll be right and most of all SAFE. Cheers.

just be carefull though your holden axles if being sourced from a tonner might have carted a ton of bricks everyday for 10 years etc etc.
for the cost of what you want to do v durability i bought brand new 31 spline billet axles for $800.i think its false economy to respline old axles.
i know you have a 28 spline centre but get them to 28 spline billets bullet proof and cheap for what you get

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#39 _CHOPPER_

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Posted 12 November 2011 - 04:59 PM

I'm fairly sure it is only 1 tonner axles that can be safely shortened. Might be best just to get new ones made.

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#40 _rob350hatch_

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Posted 12 November 2011 - 05:07 PM

second that or is that 3rd that?

Edited by rob350hatch, 12 November 2011 - 05:09 PM.

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#41 _CHOPPER_

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Posted 12 November 2011 - 05:11 PM

Once again, I think it was the case of GM-H only hardening axles as far as needed.

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#42 _rob350hatch_

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Posted 12 November 2011 - 05:19 PM

in reality for road use the studs probably wont present a problem as you have to look at the whole equation being the whole surface area pressed together preventing any leverage.but if you want to use 10's on our shit roads over time i think it could bring you undone.just 1 loose wheel nut will let the other 4 down .possible metal fatigue fine cracks outward from the studs.take them back and hit them with all the scenarios ,if they cant answer you ask them why.

Edited by rob350hatch, 12 November 2011 - 05:20 PM.

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#43 _A9XOSS_

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Posted 13 November 2011 - 08:54 PM

thanx everyone, i can get 1 tonner axles from a wrecker. sorry but i can't justify $800 for a set of axles, as a'im only going to being using the as a cruiser with the odd squirt here and there.also i'am only running 14x6 wheels now not going for 10" now.is there a cheaper new axle i could source maybe.

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#44 _CHOPPER_

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Posted 13 November 2011 - 09:06 PM

It was a few years ago now, but Trans Diff in Melbourne told me they could get new 28 spline axles made to suit for $500.

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#45 _A9XOSS_

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Posted 13 November 2011 - 09:15 PM

thanx chopper, i will compare prices to your price. gives me an idea what they are worth,but to me there not worth that much. but if thats the going price i guess i have no choice. cheers.

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#46 TempesT

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Posted 13 November 2011 - 09:40 PM

Trans diff will cost you more than that, 28 spline axles new will be 900... its what they tried to charge me early this year.

Those studs are BS, they are not to Australian Standards. Tell them you want an engineer to look at them and see if they will certify them....they wont. I 'll see if I can dig up the standard.

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#47 TempesT

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Posted 13 November 2011 - 10:03 PM

it will be in AS 4100, but from memory I seem to think its meant to be 1.5*D

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#48 _Bomber Watson_

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Posted 13 November 2011 - 10:20 PM

sorry but i can't justify $800 for a set of axles,

Would you be able to justify it after a wheel comes off on the highway and kills someone/totals your car?

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#49 _A9XOSS_

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Posted 14 November 2011 - 08:48 AM

Bomber I know what your saying and I agree, but I can't see how two axles are worth so much money.

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#50 SmacT

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Posted 04 April 2013 - 01:35 PM

Old thread, and interesting topic, but I was just told by an engineer that using HQ pattern wheels on Commo stud pattern is fine by him. As long as the center fits the wheel ok, he reasons it is an ok thing to do, and offered that each stud being out by just 0.5mm according to his calculations isn't enough to make a dangerous difference. He also said most axles that are re-holed would vary by that much anyway, and that original HQ-spec axles back in the day could have those variances.

This has confused the hell out of me given the above info. Not something I want to get wrong, but if a VSMMC-certified engineer is ok with it....