Clunking on full lock at low speed.

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Mark_b
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Joined: Sat Mar 23, 2019 4:18 pm

Clunking on full lock at low speed.

Post by Mark_b » Sat Apr 06, 2019 6:23 pm

Hi folks.

As the title suggests, im wondering what would cause a clukking noise from the outside front wheel when turning in full lpck at low speed (<10mph).

Any ideas?

Cheers,

Mark.

Mark_b
Neutral
Posts: 4
Joined: Sat Mar 23, 2019 4:18 pm

Re: Clunking on full lock at low speed.

Post by Mark_b » Fri Apr 12, 2019 1:11 pm

Anyone?

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Ian_C
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Joined: Fri May 07, 2004 10:11 pm
Location: Bedford

Re: Clunking on full lock at low speed.

Post by Ian_C » Sat Apr 13, 2019 1:44 pm

All permanent four wheel drive quattros with three differentials share this trait. All four tyres are trying to scribe a different radius when you turn on full lock. The castor on the front steering lifts the tyres onto their edges when on full lock, so it will usually be one of the front tyres that judders on the tarmac
B5 B6 B7

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jamiej
2nd Gear
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Joined: Tue Apr 03, 2018 4:06 pm

Re: Clunking on full lock at low speed.

Post by jamiej » Sat Apr 13, 2019 6:39 pm

Yea. If you Google Ackermann Effect you'll be enlightened.

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