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Clunk from rear suspension

14 Aug 2008, 9:06am
I'm currently finishing off the build of my Edge Sportscars Devil and I have a problem.

On the rear right hand suspension we have an almighty clunk when we roll the car backwards or forwards. If I roll the car forwards, I hear the clunk once, and then not again until I roll the car backwards. Then once again I hear it once and then it's gone.

I have removed the driveshaft from the gearbox to eliminate that and the sound stays. I have placed my hand on several components around the rear suspension, and the clunk feels loudest (Yeah that is what i mean ;)) when I have my hand on the hub carrier.

Things I have done:

Remove complete suspension and place the hub carrier in the vice. I then used a bolt and bog washers to pre-load the bearing and checked for noises: Result none.

I have also remove the driveshaft with CV's (Non serviceable CV) and checked for free play / strange noises: result none.

Over the last few days I have had number of people round from the local kit car club and we are all stumped. There is no physical movement visable, but we do get a loud clunk.

Anyone here got any ideas?

Rear wheel bearing btw is a sealed Audi thing that is pushed into the housing and onto the drive flange with a press.
14 Aug 2008, 5:38pm
Not the balljoints???
14 Aug 2008, 8:11pm
Brake pads or handbrake pads catching?
Wheel studs catching on caliper?
14 Aug 2008, 8:45pm
peterux wrote:
Brake pads or handbrake pads catching?
Wheel studs catching on caliper?


Or brake calliper.

My front left calliper clunks because the spring on the pad has disappeared.
15 Aug 2008, 6:52am
Click update

Thanks for the responses.

Last night I removed all unnecessary parts from the suspension (Brakes, cycle wing supports etc) so I only had top arm, bottom arm, shock and track control arm. The click was still there.

After this I changed the rose joints on all three points to make the track as narrow as possible, click was still there. I then extended all of the rose joints to give maximum track width, click got worse!

Last thing I did was wind the track control arm in and adjust the toe in/out. Click disappeared!

I don't have any measurement equipment except for the most basic so I can only assume that my wheel alignment was so far out I was loading the suspension up and the tire was skipping... Whadya think?
15 Aug 2008, 10:12am
sounds like slop some where in the track control arm when it is extended. See if you can see / measure any wobble when the thread is extended would be my next move :)