David, I know the mortar rounds are 40mm diameter x 150mm long, but I need to know the length and diameter of the fuse on them. Nick at TSLFX told me that there should be a hole in the bottom of the shell for the fuse to stick out from - but he was fucking hazy as to the size of it - "er.....somewhere between 10 and 20mm" was how he put it (doesn't instill much confidence, thats for sure!)
Oh, could you please check the overall dimensions that Nick gave me, i'm a tad concerned they might be a bit iffy - especially after he wasn't too sure of the size of the hole thats required in the bottom of the casing....
Ta,
J.
When we were a Kingdom it was run by a King
When we were an Empire it was run by an Empress
Now we're a country we're run by a..........
I'll let you know when I get to work...
Mortar round:
37mm o/d
124mm high excluding fuse
135mm high including fuse
7mm dia fuse (standard pyro strike fuse)
Last time I ever trust TLSFX when it comes to dimensions... 
One last thing thats been bugging me. Is the pyro lit *before* being inserted into the shell, or is it placed in the shell *then* the fuse it lit?
Reason I ask, is that i'm slightly concerned about the possibility of the fuse being stubbed out when it hits the bottom of the mortar tube.
When we were a Kingdom it was run by a King
When we were an Empire it was run by an Empress
Now we're a country we're run by a..........
The tube is the standard thermobaric tube as far as I can see so a dimension of 40mm i/d of shell would allow smooth insertion/removal.
Mortar is 150mm length - with striker cap attached.
I'm trying to remember which way round you fire it but I see what you mean about stubbing the fuse.
The fuse is 11mm proud of the tube end. Approx 3mm of that is the domed 'match' friction initiator, so that will burn instantly it's struck, so leaving 8mm proud.
Subtract the thickness of the metal shell base form that and I'm sure that will only leave a couple of mm proud.
Given the time the fuse takes to burn I would say:
Insert round in shell, strike protruding fuse, make sure it's burning, drop in barrel. I would have thought the fuse would have burned clear by then.
Better than striking and fumbling to get a burning pyro in the shell.
By the way, the hole in the shell end needs to be a fair bit larger than the fuse to allow for off-centred or slightly bent fuse.
Hmmm. I think a 6-8mm base thickness would do the job, with a 12mm hole in it for the fuse.
Sorted. Cheers David.
When we were a Kingdom it was run by a King
When we were an Empire it was run by an Empress
Now we're a country we're run by a..........
