Lock Tuning Problem

[TickLick]

Hello,

I'm building a flintlock, which has a nice small Siler lock.  But when I pull the trigger, the hammer falls to half-cock.  When I take the lock out and press the sear manually, the same thing happens.  I can't see anything wrong inside the lock, and sufficient wood has been removed in the mortise.
Has anyone encountered this problem before?

[Acer Saccharum]

Shoot Long, it sounds like the FLY is missing. That is a little tiny cam that is fitted to travel with the tumbler that makes the sear nose ride up and over the half-cock notch when the sear is tripped.

Look at your tumbler. There is a recess on the side of it for the FLY. The fly should be in the pocket, and pivot back and forth freely.

[T*O*F]

The tumbler is no longer in a true arc.  You, or someone else, has removed metal from the arc of the full cock notch in an attempt to eliminate trigger creep, which is not the proper way to do it.  In doing so, the half cock notch becomes a ledge because it's still in the original arc.  You need to buy a new tumbler.

[Hungry Horse]

I'm with Tom, that can't happen if the fly is in the tumbler.

                Hungry Horse

[Mark Elliott]

It can happen if the fly is in the tumbler backwards.

[Don Getz]

I'm with Tom and Hungry Horse........it appears that the fly is missing, which is somewhat common thing when you take a
lock apart...........Don

[Don Getz]

Mark.........this is a Siler lock, you can't put it in backwards..........Don

[kaintuck]

just mail her back to papa chambers....he can get it fixed~
marc

[D. Taylor Sapergia]

There is nothing more to add here...all possibilities have been covered.

[Captchee]

 1 more possibility .
   The sear may be catching on the fly . . While you may not be able to put the fly in backwards on a siler , a small burr   on the fly , can catch the sear and  thus act like its hanging on the ½ cock . Since  he says he is building a small siler . Then I take it  that he maybe working on one of the builder lock kits . As such there may be still some  clean up of the parts .

[Bob Roller]

Back in the "day"when the Germanic lock was state of the art,did they have a fly
in the tumbler?

Bob Roller

[shortbarrel]

As Bob Rollers said (state of the art), A state of the art lock, with both, half cock and full cock notches,  tuned and polished to perfection. All you need is a single trigger bar and a trigger. Works better than set triggers, you got no creep if done right.

[TickLick]

I'm such and idiot!  The fly IS missing.  The nice thing about being dumb is that solutions to problems are often simple.

[Keb]

Didn't put enough dirt down. Noticed it right off.

[Brian]

Didn't put enough dirt down. Noticed it right off.