Sierra Steering Column
Adam S-J
 
  I wasn't convinced by the steering column as described in the book. There are lots of requirements in the SVA Manual, and uppermost in my mind was the possibility of a) putting in a column assembly which would not be accepted by the SVA tester, and b) would impale me in an accident.

The arrangement I came up with can be seen in the photos: a Sierra column, because it has an impact absorbing area under the dashboard as well as a sliding coupling on the far side of the bulkhead. The first thing I did was a mistake: thinking that the column should be allowed to telescope, I made room for it to do so. But as things went on, it seemed much more sensible to prevent the whole thing from moving towards the driver by making the supporting assembly as in the first picture below.:

This final form is strong, it gives the required dogleg in the steering assembly, it should encourage the lower part of the column to bend rather than moving backwards in an accident, and it supports the top part of the column very firmly. I can't say it will pass the SVA, but if it doesn't then I don't know what would. (Note: there has been an objection to this idea on the grounds that it is too rigid)
 
 
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