Re: Deeply puzzled by this Indian brock...
- Coining presses are mechanical, not hydraulic. A hydraulic system would be too slow to strike hundreds of coins per minute.
Hubbing presses are hydraulic, however. Speed is not a consideration here.
--- In email@example.com, innff@... wrote:
> Hydraulics are a funny thing. A system can go from one pressure to the next
> in a matter of seconds if a relief valve goes into operation. While I
> imagine that both scenarios do happen (change in die clearance and change in
> hydraulic pressure), I would presume that the hydraulics would be more apt to
> cause the weak strikes.
> Out of all the theories proposed, I do like the indent on the brockage
> maker the best. It would explain how a single strike could make such a
> complicated error