15 replies to this topic

[Ducati996Senna]

Has anyone fitted these and if so I could do with knowing how you went about it?

[cheeky_chops]

I dont even know what they do!!??

[speedyK]

I thought Simon S's reply on SELOC seemed clear – not that I would want to try it myself! Are you fitting Nitrons? How much are you intending to lower it?

[Ducati996Senna]

Speedy, yes your right but he doesn't say whether you have to remove the rack. I just wondered if any VX members had any experience. I haven't had a good look at it yet. I already have Nitrons fitted and set up by AMD. The front has been lowered from 140mm to 118mm front and 122mm rear. One thing I have noticed with the lowered fronts is that when you jack the are up so the wheel is at full droop the spring is not under tension. In fact it has 9mm of play between the top of the spring and the threaded spring platform. This has caused the spring to incorrectly seat on the platform when I've lowered the car. This could possibly happen if the wheel leaves the road. I'm not happy with this so I ordered some helper springs from Nitron. These springs are much lighter in strength and take up the free play. The first set I had were rated at 100lbs and were too strong. With these fitted I was unable to lower the car to less than 125mm. The new pair which I'm waiting for are 50lbs.

[wickywire]

I dont even know what they do!!??

glad i'm not the only one

[Pidgeon]

In simple terms (which is all I can manage), when you lower the car the steering geo is adversely effected. Raising the rack cures this, which is achieved by fitting the risers.

[Ducati996Senna]

The risers help to eliminate bump steer. Ideally when the car is on the ground the steering arm and track rod end should be parallel to the mounting point for the track rod end. In this position the the track rod will move up and down as the suspension is worked about its central parallel position. When you lower the cars suspension the steering arm and trackrod end will be angled upwards to the mounting point. The risers return the steering to its neutral position dependant on how low the cars suspension is set. Fortunately with the Nitrons the spring height is adjustable.

[speedyK]

One thing I have noticed with the lowered fronts is that when you jack the are up so the wheel is at full droop the spring is not under tension. In fact it has 9mm of play between the top of the spring and the threaded spring platform. This has caused the spring to incorrectly seat on the platform when I've lowered the car. This could possibly happen if the wheel leaves the road. I'm not happy with this

I had that problem years ago with shortened springs on a Matra – didn't do anything about it apart from try to avoid potholes

I wonder how it is with the Oelins, as fitted to the VXR.

[clipping_point]

Has anyone fitted these and if so I could do with knowing how you went about it?

Have you got them? I know they are sold seperately for the Elise, but didn't know if they fit the VX. As an Elise driver explained it you undo the steering rack from the chassis, fit the plates to the rack and finally the rack+plate to the chassis.

[Ducati996Senna]

Thanks clipping point going to have a look at it this evening. Yes I have the plates, got them from elise parts. Cost about £7.00

[Ducati996Senna]

Had a look and to my suprise there already fitted. Oh well its only £7.00 I've wasted.

[clipping_point]

They were fitted? On a new car? Yeah, my friend said they were really cheap, and he thought I ought to do that mod on my low VX. Haven't noted any unusual steering effects, tho, yet....

[Thorney]

When I spoke with Guy he reckoned unless you were going under 110 height then there wouldnt be much point.

[Ducati996Senna]

Thanks for that Thorney. I did look at the position of the rack the other day and didn't think it would mount any higher. This was confirmed when I saw that these raisers are in position. I think I've read somewhere the the rack is a Corsa B.

[clipping_point]

unless you were going under 110 height then there wouldnt be much point.

Measured where? (Car height is 110 cm, lower arm to ground is XXX)

[Ducati996Senna]

CP, measure from the ground to the front chassis rail. Follow the chassis rail along its length from the jacking point marker located towards the rear of the door on the chassis to the very front which ends at the back of the front wheel. There is a hole drilled in this rail and take a measurement from here.