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Handling
March 7, 2018
10:11 pm
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Mitch
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As some of you may have read I failed my Iva on emissions on Monday but ok on everything else.

On the 50 Mile drive to the test the car felt weird and it’s hard to describe. It felt wobbly, skittish, and like it was rolling into the corners, not something I expected. Is it just I’m not used to it or do I need to change something? I’m thinking the shocks aren’t setup right? I’ve got the Gaz units with the knob on the bottom set all the way to the left - I.e. to the minimum. Not sure if this has an effect or do I just need to get used to it? It was my first real drive of her.

March 7, 2018
10:30 pm
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Blue
Harlow
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Don't stress
Get the IVA out of the way then get it set up properly
The zero actually rides really good
You'll be surprised how much the wheels can be out

March 8, 2018
12:06 am
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Marlin
Willits, California, USA
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As Blue says IVA first. An easy thing to check is tire pressure, it should be lower than you may think 18-20 psi or whatever that is in kilo pascals. Next thing to check (post IVA) is ride height. Most important to get this right since everything else works off of it. If they are not going to put you up on the ramp again you can set this now. But if you need to go back up on the ramp keep it at artificially high setting.(per Simon) This will not help your drive back to the test. Extreme setting on the Gaz min. or max. I doubt is correct but the setting is personal preference and cargo weight affected. Caster is not adjustable so you are set there. Camber is next. There are manual ways to get this close but an laser alignment is obviously most accurate. Last is Toe-in (out). This is easily done at home and can make an amazing difference in handling as again Blue said. If you have someone with the equipment corner weighing is an additional, (mostly track) adjustment but affects handling more than ride pleasure.
Hope this helps.
Marlin

Zero GT Mazda(1.8LVVT) ordered Nov 9 '15, arrived Apr 15 '16,

March 8, 2018
9:19 am
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NickMilbourn
Hampshire
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No harm in a trip to a local tyre shop that does PROPER 4 wheel laser alignment, this will check the basics and i'm sure Simon will come along and remind what settings you need to give to the shop. When I say proper 4 wheel alignment I mean something that doesn't cost £20 and takes 10 mins and using machines, not a wheel hung laser and a guy with a ruler stood at the front!!

I have my Gaz shock adjusters set about 10 turns harder from their softest setting, ride is surprisingly comfortable!

1.8 VVT Mazda GT Zero - ATR throttle bodies & 171bhp!!
IVA passed Friday 21st October 2016!!
Registered April 2017

March 8, 2018
11:56 am
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nelmo
Surrey
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I have my Gaz shocks set at 6 notches from minimum on the back, 5 at the front (maximum is 20). This was just trial and error and works for me. I found that if set at 0, the ride was very comfortable but even a slight pothole resulted in a clunk as the soft suspension hit it's travel limit. Anything approaching 10 rattled my teeth on a smooth road - gawd knows what 10+ is like! Frown

Toe-in was the biggest game-changer for me - I had setup my alignment by eye (yeah, with hindsight, that was stupid) and it was miles out. I just got a mate to use the laser alignment tool method that Nick doesn't like (Wink) and it made a HUGE difference, in particular with self-centering.

March 8, 2018
2:14 pm
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Mitch
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Thanks all for the replies. I’ll change the dial to about midway for the retest - on Monday! Then get the tracking done properly

March 9, 2018
1:09 pm
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Simon
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MONDAY

I thought I had some time to help, thats b*&&£^d my idea

March 9, 2018
9:32 pm
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Mitch
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I’ve moved it. On the drive home from work there was so much standing water and heavy rain I sacked the emissions test at a local MOT centre and rebooked for 27th ish of this month for the IVA.

March 11, 2018
5:00 am
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Graterham
Wetzlar Germany
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.
The new tyres were fitted to the rims of my wife's '86 V-Dub so I took them home and put them on.
I was a bit worried about the camber of the rears when I lowered the jack. (always have been)
The fronts looked OK and off we went for the test drive.

Holy Cow !! It was like driving on ice (and I have in Canada)

The tyre pressures were 28 psi like the rear. Doorpost label said 18 front ! Yes the front is light.
As discussed some years ago, the tyre fitters give you what they usually do, 30-32 psi.
The Zero is half the weight of tin-tops and 18 is enough. Adjust tyre pressures regularly. G

Zero Seven......Greater than a Cater

March 11, 2018
3:44 pm
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Mitch
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Wow! I see what you mean now! I moved it 10 clicks and it’s rock solid! Not driven yet but just bouncing on the side rail and there is almost no movement! Should be a hugely different drive to the retest - and indeed the remidial tests at a local centre.

I am at 18psi, checked today. Thanks

March 11, 2018
4:38 pm
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Simon
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Best place to start is turn wheel all the way out (left), then turn full in (right) counting the clicks.

half the clicks and turn it back out to half way.

surprisingly that is the mid setting, you will have to go clicks in or clicks out from there to suit your driving.

Start with all the same.

When driving watch the front wings, the wheel should be able to follow the road but with limited bounce, eg the suspension should be easily defected by the road and then return and stop at its starting point.

To soft the vehicle will wallow, to hard and you will jump from high point to high point of the road, it is a careful balance to suit the weight of the car and occupants, and one setting does not suit all conditions.

March 14, 2018
6:40 pm
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Mitch
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Drove the car this morning and with 10 clicks on each coil over it was like driving over a minefield - and triggering mines! In fact triggering a mine is less brutal! Definitely need to tweek that but now I know what I’m doing I can play with it until it suits me.

March 15, 2018
6:23 pm
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nelmo
Surrey
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Smile yup, I found the same - 5 or 6 is what you want...

March 15, 2018
10:13 pm
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Simon
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I gave my little speech about finding the middle position because, the zero can have Gaz or ATR, and there are some others.

from memory Gaz has 13 ish, ATR nearly thrity, from full soft to full hard.

start in the middle and work from there. remember each car is different, each driver a different weight, find whats best for you, do NOT assume that one setting will suit all.

A bit like geometry, we have all that to come Laugh

March 17, 2018
8:59 am
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Blue
Harlow
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I have mine on softest setting I find it bangs and crashes on middle settings
But the roads here are full of small pot holes with the top layer of tarmac missing in places

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