08-06-2020, 11:02 AM
Yep, that's the story Stuart! I'd clean forgotten that virtually all the tapers were 1 in 8. If I recall correctly the reamed ones were done with a tapered multi flute 'chassis reamer' like the ones sheetmetal guys sometimes use [taper from something like 10mm dia to 25mm dia over their length]. The heat-and-swage technique made me nervous watching it, but it worked. Nothing snapped off so far as I know, but I doubt you'd get away with it nowadays under the eye of a Low Volume Vehicle Certifier without a lot of finishing work to remove the evidence...