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Old 22nd April 2008, 17:12   #41 (permalink)
TTDegs
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I guess it comes down to how much of a problem it is (and I have no idea!), but:

Quote:
The specifics of the defect is that the rear wheel spindle thread specification as required by Honda is M22 x 1.5 6g to British Standard 3643 (This size of thread used is covered in British Standard AU 50, a standard as mentioned above). The specification of the major [outer] diameter of the thread to British Standard 3643 is 21.968mm to 21.732mm (total tolerance of 0.236mm) however the major diameters of rear wheel spindles fitted to the first 4,521 Civics are now known by Honda to range from 21.488mm to 21.450mm (0.244mm to 0.282mm (mean of 116%) under the British Standard 3463 minimum major diameter specification).
so - we have extremes of:
outer specified diam max at 21.968mm against Honda min of 21.450mm.
That's a diameter which is 0.518mm out

Now, I'm certainly no engineer, and I have no idea what kind of difference that would make?


I'm also a little unclear quite how this issue was ever picked up in the first place?
Unless they keep a note of the spindle size of every single Civic, or keep one from each batch that they are supplied with or something?

Not that I'm doubting that there is an issue - just wondering
a) how big an issue it is, and
b) being curious, how it was found out

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