Author Topic: Subframe set up  (Read 1294 times)

Offline ereeiz

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Subframe set up
« on: March 15, 2016, 10:50:14 am »
Are there any recommended settings for doing the geometry on subframes? I set tracking to zero degrees which massively helped, wheelbase appears to be correct (3mm different one side to the other) but the car still pulls left/right, it feels as though all 4wheels are loose. I've obviously missed something somewhere or am setting it incorrectly? I've searched for guides but there's that much written about them it's a bit time consuming trawling through it all.

Offline ereeiz

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Re: Subframe set up
« Reply #1 on: March 15, 2016, 10:52:23 am »
Also set tyre pressures 34 on the front, 28 rear (195/45/14 rainstorm 2's). I'm not sure on wheel spec, will update later. Borbet 5 spokes....

Offline hayesey

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Re: Subframe set up
« Reply #2 on: March 15, 2016, 10:54:36 am »
what's the camber & castor angles like?

Offline ereeiz

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Re: Subframe set up
« Reply #3 on: March 15, 2016, 11:12:50 am »
I haven't checked them, gonna borrow some other gauges today and see. I've only got the front adjuster on mine, didn't get the lower arm upgrade. I've just realised I have none G40 bits (CL conversion) so perhaps the lower arm bushes are worn

Offline Yoof

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Re: Subframe set up
« Reply #4 on: March 15, 2016, 11:50:48 am »
We always recommend a nylon outer bush and the G40 TCA with the frames. If it's second hand check also if there's play in the rose joints (details for replacements in our section on here)

Camber you'll have minimal scope to adjust with a standard top mount/tca, so once you've confirmed healthy bushes/rose joints, I'd set the castor (and toe again) and retest.

Check the OSF ARB mount is tight too  ;)

Offline dan182

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Re: Subframe set up
« Reply #5 on: April 02, 2017, 10:15:53 pm »
I have the same problem stage 2 frame

Offline Yoof

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Re: Subframe set up
« Reply #6 on: April 03, 2017, 07:21:13 am »
Checked the points in my post above?

Offline RyanC

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Re: Subframe set up
« Reply #7 on: April 03, 2017, 11:54:46 am »
This is the same issue I have.. car won't go in a straight line underload. It's like it's a really windy day.

Offline ereeiz

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Re: Subframe set up
« Reply #8 on: April 11, 2017, 12:44:40 pm »
I never got round to doing anything as my insurance got messed up so took it OTR. Almost got 1NCB again so will be working on it in the coming weeks, will let you know my findings. Deffo need to do the arm bushes as I'm quite sure they're standard but think I have rose joints the other end. Literally not touched the car since about June! Cheers mate!

Offline Yoof

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Re: Subframe set up
« Reply #9 on: April 11, 2017, 03:14:18 pm »
Also - I'd suggest anyone running any significant reduction in ride height or coilovers with modified steering arms, that they check bumpsteer.