That's what i have in the picture. I didn't realize that the striker closed two contacts to complete a circuit, i actually thought it set off a percussion cap, but looking at the spring strength it could do both. What is the difference between the VSU training version and the SU type, as the VSU looks capable of doing the same job. Is this quite a common devise or is this a rare piece?
The system of a "circuit closer/percussion" is also used in Russian time fuzes and is a good idea I think. Yes, tat was my question above as for what would be the reason to have 2 different designations. they answer may be as simple as that (just my thought): other fuzes do exist in such configurations as well and have tiny spotting charges (the dets with yellow bands). So it might be that this one exists as such a version just for the sake of keeping the system and nomenclature straight since the life version comes packed with a life det and this can't be done for practice purposes later on (as we know recruits tend to be unexperienced - and some sheer stupid) so a separately marked and packed practice version became neccessary. Of course also a potential reuse may matter as Ivashkin said and here some modification might he been applied for recocking/rewinding the whole thing. As said just my thought basing on some other practice items I have seen elsewhere (which were identical to life ones except for the paint job and the missing det).That's what i have in the picture. I didn't realize that the striker closed two contacts to complete a circuit, i actually thought it set off a percussion cap, but looking at the spring strength it could do both. What is the difference between the VSU training version and the SU type, as the VSU looks capable of doing the same job. Is this quite a common devise or is this a rare piece?