This is by no means my design, but I really liked it. Ivo posted it on one of Gnome's posts I thought I might use it. One question I had was whether the two pins with the red outline do they have any functional use? I know the bottom one to the top left of the trigger could keep it from moving forward, but how about the one in between the nut and the blue highlighted pin on the middle piece of the trigger mechanism?
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5 posters
Pins in Trigger Mechanisms
banuvatt- Workshop Savvy
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- Post n°1
Pins in Trigger Mechanisms
This is by no means my design, but I really liked it. Ivo posted it on one of Gnome's posts I thought I might use it. One question I had was whether the two pins with the red outline do they have any functional use? I know the bottom one to the top left of the trigger could keep it from moving forward, but how about the one in between the nut and the blue highlighted pin on the middle piece of the trigger mechanism?
kenh- Crossbow Junkie
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- Post n°2
Re: Pins in Trigger Mechanisms
The one in front of the trigger prevents the trigger from coming forward. The one above the sear keeps the sear arm in place until the notch in the roller comes back around and catches again.
Andy.- Workshop Savvy
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- Post n°3
Re: Pins in Trigger Mechanisms
Yes, the bottom one prevents trigger moving forward, but top is superfluous, as the nut itself keeps the tickler arm in place (assuming the arrow notch in nut wont foul its rotation when cocking)
Wildtech- Fresh Blood
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- Post n°4
Re: Pins in Trigger Mechanisms
The Top pin is used to hold tension on the arm and spring until you have installed the nut so the spring doesn't fall out. I have had to use this on other Crossbow designs.
banuvatt- Workshop Savvy
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- Post n°5
Re: Pins in Trigger Mechanisms
This is kind of unrelated, but it relates to the trigger is the small gap in between the top of the trigger and the lever supposed to be there? Or is it just there to show that the trigger and the lever are separate parts?
Andy.- Workshop Savvy
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- Post n°6
Re: Pins in Trigger Mechanisms
I reckon to show that they're separate parts.
Some triggers of this type however, have a small raised portion in the trigger at the bearing surface with the top lever to reduce surface contact/friction between both parts.
Some triggers of this type however, have a small raised portion in the trigger at the bearing surface with the top lever to reduce surface contact/friction between both parts.
banuvatt- Workshop Savvy
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- Post n°7
Re: Pins in Trigger Mechanisms
I was thinking if that gap wasn't there wouldn't the trigger mechanism just function as one part rather than two? Now I am thinking it was the latter of what you said.
Gnome- Crossbow Junkie
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- Post n°8
Re: Pins in Trigger Mechanisms
Ha! That takes me back. That image was a diagram of my first attempt at a crossbow lock mechanism, which Ivo modified to show me how to make it maybe actually sort of functional. The point was mechanical advantage, the line between the parts was drawn because originally it was just one part with negative advantage. The stop-posts were a suggestion that did not prove necessary.
Gnome
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