sbl11 wrote:The Japanese would not have made thier own molds, so they could have german markings.
-seth
One of the great misconceptions of the whole "Japanese copying German aircraft guns" saga is the notion that they simply plugged in the tooling and flipped the switch. ;-)
While the Germans provided complete technical details, and in cases actual parts and specific tooling, dies, and gauges, the Japs were severely handicapped in their industrial capacities in many important regards and in particular, their available metallurgy in some cases where it mattered. The Germans took full advantage of their premier positions in the arts of tooling and gauges, and in many cases their industrial alloys. Their designs reflected their industrial capabilities. The Japs OTOH, sorely lacked a lot of the advanced industrial backbone that was taken for granted in Germany and elsewhere, and so had to resort to modifying both the process and materials for what they had available, this compromise approach shows up in many areas. Some didn't really matter, some did.
The Japanese copy of the MG-131 is a perfect example; all the Jap copies were percussion fired, whereas the definitive German variants were all electrically primed and fired. Much has been suggested as to why this was so, but in the end it seems the Japanese industrial-technical capacity to produce reliable electrical primers was the culprit, despite having been given all the knowledge, and presumably tooling, to do so.
This same principle seems to exist with whole synthetic materials issue; while the Germans issued kunststoffe/plastics like water, the Japanese never seemed to have done so, at all. In the German paradigm, it is almost hard to find a mundane common item that was NOT converted to kunststoff, and yet in the Japanese realm, you NEVER commonly see synthetics used. That is more than just a casual observation here, as had the Japs had the opportunity to produce the MG-15 rear cover from synthetics, they probably would have done so with great joy. Rather, the more this topic festers in my head, the more I am tending to believe that any "bakelite"/kunststoff rear cover for the Type98/Type 1 guns had to have come from Germany, and that they just used it as an already made part. Seth, I don't think it is case where they couldn't make the molds, rather I think more likely that there simply did not exist the chemical industry capacity that was needed to produce the urea-formaldehyde forming stock.
Somebody needs to go examine a Type 98/Type 1 gun that is in Japan.
-TomH