SvenEnglish: Heym SR 30 Straight Pull Bolt Action. The rifle Heym SR 30, a hunting rifle, designed by a German arms manufacturer named "Heym". It is a straight-pull action with 6 ball bearings around the circumference of the bolt head. When the bolt handle is pushed forward, it forces a central plunger down the interior of the bolt body, forcing the 6.5 mm (0.256 in) diameter ball bearings out to lock into negative shaped (concave) recesses in the receiver. Pull the bolt handle back, and the plunger retracts, allowing the locking bearing to retract into the bolt body so the bolt can open. Heym states they successfully had the SR 30 lock up tested by the C.I.P. accredited Suhl proofhouse loaded up to 800.00 MPa (116,030 psi) pressure.
Diky za ten odkaz na cislo zapisku 29343 od El_Diabla, ktery jsem prvne prehledl. Z toho vykresu, za temi fotkami zaveru je videt, ze v tom nadstavci hlavne u ramu je jen zaoblena hrana, o kterou se ty kulicky opiraji pri uzamceni. Coz by na vyrobu pak bylo velmi snadne. Ovsem v tom textu pod tim obrazkem pri vysvetleni v Anglictine, se tam jasne pise, ze tam jsou "concave recesses"=pulkulate otvory, tak,ze se tam jen o zaoblene hrane nic nepise, ale na tom vykresu, ta hrana jasne videt je. I kdyz se tam v tom popisu ti Nemci chvastaji, ze jim ten zaver vydrzel tlaky az na 116030 Psi, tak ja bych osobne tomuhle zamykacimu systemu az natolik neveril, abych riskoval svuj zivot, pri kazdem vystrelu z takoveto zbrane. A to i kdyby v tom ramu u te pusky byly pro uzamykani velmi presne i jednotlive pulkulate dirky, do kterych by se ty loziskove kulicky presne po rozepinani zevnitr tlakem te uderne jehly pouzamykaly. Al |
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