out for bolts
29th November 1986, Page 88
29th November 1986
Page 88
Page 88, 29th November 1986
— out for bolts
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When removed, it was found that the splines in the bolt had stripped as a result of their softness. In fact the ultimate tensile strength was 43 tons/sq in compared to RO-R's standard of 65 tons/sq in."
Tests on the ISO nuts were equally alarming, in that the thread was oversize, making a very loose fit.
RO-R says that the assembly, which bears no manufacturer's indentification, will not be capable safely of taking ROR's recommended tightening torque of 70-75kgm (5005501bft).
The spurious bolts (see picture at the foot of this page) are turned from bar and the threaded end has a centering mark. The wheel nuts are of turned/milled construction.