Unfortunately, the tiny screw fitting into the end of the original barrel bolt to enlarge the hollow end, thus tightening it, was lost in the process. He and his friend gave up fixing it after sending the factory spring into the garage wall while attempting to fix the original seal. This gun came to me disassembled and was basically a box of parts when I got it from the previous owner. I also bought a brand-new pivot bolt and screw along with the tune kit.
Since a picture is a thousand words, here are a few:ĭisassembled gun with picture of new spring kit and factory spring:Īs you can see, the new kit with its different configuration, can really change the whole dynamics of the interaction of the spring and piston with the differing stiffness, length and spacing. As an added bonus, this kit not only smooths vibration, but generally increases velocity as well with the stiffer spring. Some of the lost length is made up for with the spacers, but overall, the length of the spring kit is shorter than the factory spring. Also, as you'll see in the pictures, the new spring is much shorter than the original and is a bit stouter. Its tight tolerances are designed to cut down on the vibration of the spring which produces the classic "twang" in most springers. This is a custom made kit from that comes with front and rear guides that are extremely tight-fitting. I decided this gun, and not my "new-to-me" San Rafael would get the kit since it had the most to gain, being the roughest cocking and least accurate of the two.
#Feinwerkbau sport 124 parts pro
I finally got around to installing the Maccari Pro Mac tune kit in my San Anselmo "Cobra" FWB 124.