Difference between revisions of "Over/under"
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| − | An '''Over/under''' launcher is one where he barrel is turned 180* (using 2 90° elbows, typically) so that it points in the opposite direction of the chamber, and is directly above it. This makes the total launcher length shorter, although the 90° bends will slightly reduce flow. The design is very common in [[pneumatic launcher]]s, since many pneumatic valves have the input and output ports at right angles. Pneumatic chambers are also usually longer than combustion chambers, so more overall length is saved. | + | [[Image:Over-under.jpg|thumbnail|300px|An over/under stlye cannon]]An '''Over/under''' launcher is one where he barrel is turned 180* (using 2 90° elbows, typically) so that it points in the opposite direction of the chamber, and is directly above it. This makes the total launcher length shorter, although the 90° bends will slightly reduce flow. The design is very common in [[pneumatic launcher]]s, since many pneumatic valves have the input and output ports at right angles. Pneumatic chambers are also usually longer than combustion chambers, so more overall length is saved. |
Recoil puts a lot of stress on the elbows, barrel supports clamping the chamber and barrel together are recomended to reinforce the launcher and keep the barrel steady. | Recoil puts a lot of stress on the elbows, barrel supports clamping the chamber and barrel together are recomended to reinforce the launcher and keep the barrel steady. | ||
Revision as of 02:05, 24 October 2005
An Over/under launcher is one where he barrel is turned 180* (using 2 90° elbows, typically) so that it points in the opposite direction of the chamber, and is directly above it. This makes the total launcher length shorter, although the 90° bends will slightly reduce flow. The design is very common in pneumatic launchers, since many pneumatic valves have the input and output ports at right angles. Pneumatic chambers are also usually longer than combustion chambers, so more overall length is saved.
Recoil puts a lot of stress on the elbows, barrel supports clamping the chamber and barrel together are recomended to reinforce the launcher and keep the barrel steady.
