I have seen three variations of the Hammer Assembly for the Crosman 150: a single power cocking assemble, a high and low power cocking assembly and I saw a gun for sale on Ebay that had an adjustable cocking assembly. I am not sure how that worked, all I saw was that the part that you pull back to cock the gun had an arrow on it showing you could increase the power by rotating it in one direction. I assume it uses a threaded shaft to increase or decrease the spring tension
I have a high/low power cocking mechanism on my Crosman 150. If you pull it back to the first click, the shear holds the hammer at less than full cock position, then releases it with less spring tension, which therefore opens the exhaust valve less. The high power position pulls the hammer further back and increases the spring tension, so that when the gun is fired, the exhaust valve is opened further and provides more CO2 to send the pellet down the barrel.
Unlike the newer Crosman 2240, which allows one to modify spring tension by use of a spring tensioning device, the Crosman 150/157 have a one piece combination hammer, hammer spring, and cocking assembly, that as far as I can tell cannot be readily disassembled to allow a stronger hammer spring to be added.
i found a way to increase the spring tension by adding a washer or two between the existing spring and the part of the assembly that cocks the gun.
i have uploaded a video on my YouTube Channel: Eagle View HD. The video is titled Hammer Spring Adjustment on a Crosman 150.
I have a high/low power cocking mechanism on my Crosman 150. If you pull it back to the first click, the shear holds the hammer at less than full cock position, then releases it with less spring tension, which therefore opens the exhaust valve less. The high power position pulls the hammer further back and increases the spring tension, so that when the gun is fired, the exhaust valve is opened further and provides more CO2 to send the pellet down the barrel.
Unlike the newer Crosman 2240, which allows one to modify spring tension by use of a spring tensioning device, the Crosman 150/157 have a one piece combination hammer, hammer spring, and cocking assembly, that as far as I can tell cannot be readily disassembled to allow a stronger hammer spring to be added.
i found a way to increase the spring tension by adding a washer or two between the existing spring and the part of the assembly that cocks the gun.
i have uploaded a video on my YouTube Channel: Eagle View HD. The video is titled Hammer Spring Adjustment on a Crosman 150.
