Specifically, on the TAC 15i I mentioned there is a steel pin above the trigger assembly in the frame of the crossbow. This pin acts as a hammer stop or hammer block each time you pull the trigger. I stated it was a uni-directional pin when it comes to removing or re-installing it.
This pin makes a considerable amount of noise each time you pull the trigger and the hammer strikes. It sends the noise and vibration through the frame of the lower unit.
There are two things I would suggest doing to help silence this noise and vibration to a minimum, they are listed below:
1. Remove the hammer stop pin as specified in the Timney Trigger installation instructions associated with this thread.
Then take a small piece of rubber tubing (such as that used in archery to connect your peep site to your bow limb. I believe it's called a "shurz-a-peep".) One inch of tubing is plenty. Slide this over the pin while reinserting the pin back onto the crossbow frame and re-seat the pin with the rubber now across the inside spread of the pin. This is easiest if you add a drop of silicon to the pin before placing the tubing over it and insures that the pin can easily be removed in the future, if you decide to disassemble the crossbow again.
2. Observe the place where the hammer makes contact with this pin. This can be done by pulling the trigger multiple times and reloading the hammer each time. Once you have this contact point marked, you can cut a half inch wide by one and a half inch long strip of self stick mole skin or felt or thin rubber to cover this contact point. I used a soft piece of moleskin, but I'm sure any of the other materials would produce similar results.
If placed in the correct spots, you'll be amazed at how much noise and sound this removes from the crossbow.
Once complete, reassemble your crossbow as before.
To this, I've added the more common Limbsavers specifically for crossbows. The only difference in my application was that I purchased some "Scotch" brand, double sided Foam Mounting Squares and cut them to the exact size and shape as the Limb Savers. I applied these to both the inner and outer Limb Saver pieces and then tightened each one using the supplied Hex Screw. This was to prevent the possibility of movement or slippage during shooting.
Follow this with a pair of typical string leeches and that should reduce your noise and vibration by about 80 per cent or more.
I don't suggest that this is the only way to silence down these components, but I do know it's a good start and I would like to hear other ideas and suggestions from other members who have had the time to do some of this work.
