UK Karting - Notice Board (General Karting) : Re: Chassis straightening

Notice Board (General Karting)

Re: Chassis straightening
Posted by 'SimonS' on 18 Jul 2013 @ 07:25

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SimonSJoined: December 2004
Total Posts: 4
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If you have axles or chassis straightened, there are certain risks.

The material may have been stressed beyond the elastic limit, the metal may have been permanently deformed or thinned. Straightening will not return the metal back to 'inside' its elastic limit.

The metal may have been stressed to an upper yield point, after which it will fail at a lower yield point, something that can only be seen by destructive testing.

Both are difficult to detect after straightening but the component will be more likely to fail in future.

If you want something straightened, the a good straightener should reject anything likely to be weakened, but a yield point for example can only be checked by testing a sample, and /or microscopic examination.

I saw one driver reject an axle recently after pulling it from the chassis because he found a minute crack starting from a key steel hole. Without that inspection, the axle, which had been straightened at the other end in the past, might well have failed catastrophically. the failure might well have been blamed on the straightening rather than anything else.

In other words, straightened chassis and axles need extra care and inspection. The use of a liquid penetrant inspection (dye) to help determine whether a suspect is a crack or not can be useful.

Message Thread:

Chassis straightening by 'ExtremeTkmDriver' (17 Jul 2013 @ 12:56)

Re: Chassis straightening by 'deangwigan' (17 Jul 2013 @ 13:46)

Re: Chassis straightening by 'Craig78' (17 Jul 2013 @ 17:01)

Re: Chassis straightening by 'TeamOrange' (17 Jul 2013 @ 23:21)

Re: Chassis straightening by 'SimonS' << You are here!

Re: Chassis straightening by 'ExtremeTkmDriver' (21 Jul 2013 @ 21:48)

Re: Chassis straightening by 'TeamOrange' (21 Jul 2013 @ 22:51)

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