Flintlock to percussion

[hortonstn]

I want to swap a large siler Flintlock rifle to a percussion lock will a large siler percussion fit in the same orfice?

[Daryl]

Should be able to scale it off Track's web site, or from them verbally.

[smylee grouch]

Im thinking the lock plates should be the same. Vent hole/drum line up with drum cut out might be a tad off, ?? 

[Ky-Flinter]

hortonstn

The lock plates are the same except for the pan/frizzen and the drum cutout.  I've made the swap from percussion to flint and only needed to notch the stock for the back side of the cock to clear. 

The flint plate should drop into your percussion mortise, BUT..... converting from flint to percussion can work but, as Smylee Grouch alluded, the touch-hole position must be in just the right spot or the drum won't line up correctly with the drum cut-out in the percussion plate.

Ron

[BOB HILL]

Smylee and Ron have your answer. No problem.
 Bob

[alacran]

I have done this in the other direction that is cap to flint. The lock plates were almost the same. It found it was easier to file a bit more draft in the areas of the flint's plate that were tight than to mess with the inlets.

[Daniel Coats]

I want to swap a large siler Flintlock rifle to a percussion lock will a large siler percussion fit in the same orfice?

Yes the lock will fit. But it might not work out from that point forward as others have mentioned. Consider too the style of the rifle and changes you are thinking about. Trading for a different rifle is another option.

[okawbow]

I recently converted an SMR for a 95 year old gentleman. I did the conversion  so it can easily be put back to flint. I ordered a new lock plate and modified it to fit the new drum. I also had to modify a mainspring as the cut out for the drum interferes with the spring. I made the drum threads 3/8” x24 tpi for extra strength and made a matching vent in case they changed back to flint.


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[Steeltrap]

I recently converted an SMR for a 95 year old gentleman. I did the conversion  so it can easily be put back to flint. I ordered a new lock plate and modified it to fit the new drum. I also had to modify a mainspring as the cut out for the drum interferes with the spring. I made the drum threads 3/8” x24 tpi for extra strength and made a matching vent in case they changed back to flint.


how to upload pic

Nice work!

[D. Taylor Sapergia]

When you get the percussion plate fit into the flint orifice, you may find that the drum cut-out does not align well with the old vent hole, and consequently, the cut-out doesn't fit the drum.  File it to fit.  If it is way off, you can add steel to the plate, or brass, and re-file the drum cut-out so that it supports the drum properly.
Note on drums:  use a blank drum that has no nipple seat drilled.  Rn the drum into it's threads in the barrel until it bottoms properly.  Then align the hammer with the drum and mark where the nipple seat must be drilled.  With careful set-up, you can get this right on the first try, and drill the nipple hole in the right place on the drum.