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Sorry Peter, the Izod test is an impact test that breaks the material the Brineell test is the other hardness test but it uses a 3000lb load on a 3/8" ball so not really good for bayonet parts LOL. they do use a lower weight and smaller ball but this is not used as much, Europe went to the Vickers tests for smaller items. I quoted to test the SA80 breach block and it had more indents that my AK47 had parts :-(
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01-29-2017 08:42 PM
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Thanks old-smithy. I guess i didn't listen as well as i thought in my engineering science classes in the early 90's.
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Contributing Member
A stripped No7 bayonet, blade assembly.
Here are some pictures of a stripped No7 bayonet, on it's own, and in comparison to a No9 blade. The pen tip indicates the extent of the No7 tang end which is longer than that of the No 9 tang by about 5/16" or so. To use a No 9 blade as a replacement blade on a No7 bayonet would have meant a short tang unless extra metal was welded on. An alternative may have been to extend the tang by grinding into the blade but this would obviously shorten the blade. I don't know it either of these courses of action would have been acceptable???
Last edited by Flying10uk; 02-02-2017 at 01:44 PM.
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Thank You to Flying10uk For This Useful Post:
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From F/10's comparison photo's (thanks F-10) it looks like you COULD repair a broken/knackered bladed and valuable No7 bayonet by using a decent and readily available No9 blade. BUT only if you grafted/welded on an extension piece to the hilt, drilled and re-rivetted it to the No7 grip area and rear end and then made good. Worth it.....? probably not! Bit of a winter project........? Could be. Old stock No5 cross pieces seem to be available so resurrecting a No7 could be interesting but only if the donor was otherwise complete.
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Contributing Member
If a "new" unused spare No9 blade was available that still had a long tang, the repair which you describe, Peter, suddenly becomes much more viable. I have never seen spare No9 blade blanks for sale on the surplus market but presumably the blades were available as spares at on time, years ago?
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Advisory Panel
Like Peter suggests though, they look like two different blades actually. I don't think it's really viable...
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Thread 35. The actual blade part of any bayonet was never available as a spare part in the military. The only option would be to weld/extend a used No9 blade
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Thank You to Peter Laidler For This Useful Post: