For Questions Regarding WOFs/CERTs/NUMBER PLATEs

[cletus]

Ah right.

I guess you could have a look at examples of OEM axles or hubs and see what thicknesses they have in that area, and use that as justification it's OK? 

[vk327]

Factory commodore hubs for hat rotors have bugger all from the od to edge of the stud basically just enough for the head of the stud on the back face 

[zep]

14 minutes ago, vk327 said:

Factory commodore hubs for hat rotors have bugger all from the od to edge of the stud basically just enough for the head of the stud on the back face 

That helps. I assumed that because the Ae101 rotors are on the non drive wheels then it's less of an issue. But that looks like less meat than I have to with with. I'll try and find a few other examples.

[zep]

16 hours ago, cletus said:

Ah right.

I guess you could have a look at examples of OEM axles or hubs and see what thicknesses they have in that area, and use that as justification it's OK? 

Here's a few that look close to the edge:

MX-5

 

E46 (and it's threaded!)

I'll also have a 6mm plate on the back of the wheel mounting fact for the speed sensor trigger. So the stock mounting face is 10mm + 6mm with the plate.

[zep]

Regarding camber rules, the guide says "A front or rear suspension system in a low volume vehicle must incorporate no more than half a degree (0 degrees 30mins/0°30’) more negative camber than that specified by the vehicle manufacturer". What happens with OS cars where this factory information is not available?

[RXFORD]

1 hour ago, zep said:

Regarding camber rules, the guide says "A front or rear suspension system in a low volume vehicle must incorporate no more than half a degree (0 degrees 30mins/0°30’) more negative camber than that specified by the vehicle manufacturer". What happens with OS cars where this factory information is not available?

You can set to 1.5° neg. 

[Bling]

How old is the car for no one to have alignment specs 

[locost_bryan]

8 minutes ago, Bling said:

How old is the car for no one to have alignment specs 

Should be in the Haynes manual.

[Nominal]

16 minutes ago, Bling said:

How old is the car for no one to have alignment specs 

Pretty old/weird

[gibbon]

aftermarket adjustable suspension, do the threads and adjuster nuts need to be steel to be road legal or is aluminium ok?

 

[Bling]

On mine the threaded sleeve is steel because it's the shock itself. The nuts are aluminum. I had custom ones made in 6061 but the stock ones were 6061 too. Cert man was happy with that.

[cletus]

3 hours ago, gibbon said:

aftermarket adjustable suspension, do the threads and adjuster nuts need to be steel to be road legal or is aluminium ok?

 

Aluminium is OK if its a reputable aftermarket manufacturer 

 

If you were cobbling something together yourself then there may be more questions

[zep]

20 hours ago, locost_bryan said:

Should be in the Haynes manual.

There is no Haynes for the Gemini, and the Gregorys doesn't have it. Perhaps there is an Isuzu/Holden workshop manual somewhere...

[locost_bryan]

7 minutes ago, zep said:

There is no Haynes for the Gemini, and the Gregorys doesn't have it. Perhaps there is an Isuzu/Holden workshop manual somewhere...

GM T car, try Vauxhall Chevette or Chev/Pontiac version.

[GARDRB]

So I went looking for the camber thing. Here you go, 1.5degrees neg or half a degree more than maximum camber specified by the manufacturer.

[locost_bryan]

On 21/09/2024 at 16:06, locost_bryan said:

GM T car, try Vauxhall Chevette or Chev/Pontiac version.

Haynes Vauxhall Chevette manual

Queue | Haynes Vauxhall Chevette Owners Workshop Manual 0856962856, 9780856962851 - DOKUMEN.PUB

[tortron]

Try Gemini?

https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://www.symons.net.au/gemi/TX%20Gemini%201975%201976%20Workshop%20Manual%20SP133.pdf&ved=2ahUKEwjZjf_rutqIAxW74jgGHQqECQAQFnoECBIQAQ&usg=AOvVaw3iR3G27fNMyUQFKsIR0X-I

 

[zep]

Holy shit I'm useless. Though I did find a Chevette Haines.

Interesting that Chevettes get an extra 15 degrees of negative camber. The 75/76 TX Gemini in Aussie did have different front arms, so perhaps the 78 is different. I'll keep looking. It's a matter of 15 degrees!

[locost_bryan]

Not 15 degrees, 15 minutes or 1/4 degree Measurement of angles (clarku.edu)

Degrees may be further divided into minutes and seconds, but that division is not as universal as it used to be. Each degree is divided into 60 equal parts called minutes. So seven and a half degrees can be called 7 degrees and 30 minutes, written 7° 30'.

Parts of a degree are now usually referred to decimally. For instance seven and a half degrees is now usually written 7.5°.

 

[kws]

15 deg camber would be wild

Coming to the design disasters thread soon.