Hi Doubs ,
[quote]Originally posted by Doubs:
<strong>As regards the question of main spring tension helping to keep the toggle train in it's locked or "battery" position, the answer can clearly be demonstrated by this experiment: Raise the toggles until the sear engages the firing pin and the toggles are held in the raised position. Turn the pistol upside down and squeeze the trigger. The toggles will slam shut and remain so. This would not be so if main spring tension was absent. I've even seen some Lugers with sufficient main spring tension to prevent the toggles from remaining raised even with the sear/firing pin engaged.
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Respectfully, please reread my post - what I wrote was, â??The main spring plays no direct part in keeping the toggle closed.â? Thatâ??s a true statement. What keeps the toggle train in battery is the rigidity of the toggle train with the toggle pivot point below the centerline of the toggle train. The recoil spring is not involved in this rigidity - itâ??s purely a mechanical lock.
The recoil spring does play some indirect part in retarding the opening of the toggle, by providing some small (small relative to the other forces in play) part in delaying in time the travel of the barrel/barrel extension to the point at which the toggle knobs engage the frame ramps and lift the toggle pivot point above the centerline of the toggle train. This effect is also what keeps the Lugerâ??s action from flopping open and closed is the pistol is waved around. But what is keeping the toggles closed is the mechanical lock of the toggle train - the recoil spring is serving only to inhibit travel of the barrel/barrel extension (which indirectly keeps the breechblock in battery by preventing the frame ramps from coming into contact with the toggle train).
Warm regards,
Kyrie
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