Traditional Muzzleloading Association

Craftsmanship => Gun Building and Repair => Topic started by: 509thsfs on March 01, 2015, 05:02:40 PM

Title: touch hole liner install ooops
Post by: 509thsfs on March 01, 2015, 05:02:40 PM
After measuring umpteen times and carefully drilling, I found my touchhole liner is about 1/32 or so of an inch too far back.  How bad do you think this will effect ignition?  Should I try to shim the barrel or something to move it forward?  That would involve elongating the tennon pin holes and lock bolt hole through the tang a tad. I can fill in the gap it would create in the tang inletting.  Anyhow, any opinions/suggestions?

Slot on liner is a bit messed up. Had a problem countersinking and torqued it a bit too much as I worked on it.  May replace later. I plan on opening the hole a tad bit. Don't know if that might compensate a bit for being slightly off.

By the way. this is my 1st build attempt. Pretty ticked off I blew this after so many measurements taken

(http://i718.photobucket.com/albums/ww187/USAF-SP/liner1_zpsz1cy4e2q.jpg) (http://http)
Title: Re: touch hole liner install ooops
Post by: rollingb on March 01, 2015, 05:23:24 PM
The usual fix for such a mishap, is to "plug" a misplaced hole for the touch hole with a bolt of the correct size and to the correct depth,... saw off the bolt, then file flush with the barrel,... and then re-drill in the correct place.  :rt th
Title: Re: touch hole liner install ooops
Post by: ridjrunr on March 01, 2015, 06:17:17 PM
I would definitely shoot it first,it may surprise you. In fact shoot it several times before really deciding,imo.
Let us know how it turns out.

And welcome to the fire! :toast
Title: Re: touch hole liner install ooops
Post by: Eric Krewson on March 02, 2015, 10:28:48 AM
Did you drill a small pilot hole first or go straight to the full diameter bit?

I am a beginner as well and mark the hole location with the lock in place, punch a divot at the correct spot and follow up with 5/64" drill bit first, then an 1/8" and step up to the full size bit for the liner. I do have a cross slide vise on my drill press that makes hitting the mark much easier.

Here is my slopped up first gun, at least the touch hole liner location is correct. I am proud of my second gun but not so much the first, although I have killed a pile of deer with it. Some day, when I have nothing to do, I am going to redo the gun in the picture to correct all my goof-ups. Between gun #1 and gun #2, I discovered Optivisors, amazing how much better work you can do when you can actually see what you are working on.


Here is the same gun marked and ready to punch. Sometimes my punch mark might be slightly off but I can move it to the correct spot with a little sideways tapping. Of course I take the barrel out of the stock to mark my spot and proceed.

Title: Re: touch hole liner install ooops
Post by: 509thsfs on March 02, 2015, 11:45:14 AM
The location was scribed and checked with the lock in place. All lines looked good. It was punched then put in a drill press vise and lined up before drilled. Maybe a small pilot hole would have helped. But everything was checked multiple times. Heck, was an hour and half job with locating, marking, removing breach plug,  drilling,  etc... Lessons were learned and notes taken and corrections made to all the instructions.  This is my "learning" gun.  Next half dozen will be easier
Title: Re: touch hole liner install ooops
Post by: Smallpatch on March 02, 2015, 11:51:05 AM
Won't hurt a thing. Leave it like it is, it will work fine.
Title: Re: touch hole liner install ooops
Post by: 509thsfs on March 02, 2015, 11:52:40 AM
I'm thinking (hoping) that with the shape of the pan, the flash will still be "funneled" to the touch hole ok.  I also prefer my touch holes to be slightly larger than what it is now. But I will work on all that when shooting tome comes. Right now  it "just don't look right".
Title: Re: touch hole liner install ooops
Post by: Eric Krewson on March 02, 2015, 02:26:51 PM
I had a TC gun with the touch hole in the back corner of the pan, I even sent it back to TC because it was so misplaced but they said they didn't see anything wrong with it.

The gun went off OK but I sure hated looking at that touch hole placement, that and the fact that the lock inlet was filled with hot melt glue to take up the slack from bad inletting turned me away from TC guns
Title: Re: touch hole liner install ooops
Post by: 509thsfs on March 02, 2015, 03:05:04 PM
My 1st flintlock, years ago, was a tc pa hunter. Hated that rifle. Well mostly hated the trigger pull on it. It was so tough it actually hurt my finger. Did everything I could to make it usable. Even wrapped the trigger with electric trial tape to make a sort of trigger shoe to spread the pressure. Shot ok though and introduced me to flintlock hunting. And heck, I got it for free. Finally traded it in on a different flintlock
Title: Re: touch hole liner install ooops
Post by: snake eyes on March 02, 2015, 04:14:47 PM
Quote from: "509thsfs"
I'm thinking (hoping) that with the shape of the pan, the flash will still be "funneled" to the touch hole ok.  I also prefer my touch holes to be slightly larger than what it is now. But I will work on all that when shooting tome comes. Right not it "just don't look right".
509thsfs,
             Maybe I missed it,but have you ever shot the gun from the original question?
snake-eyes  :shake
Title: Re: touch hole liner install ooops
Post by: 509thsfs on March 02, 2015, 05:33:30 PM
Nope. Still in the build stage. So far just the barrel and lock installed. No major work on it again until this weekend. Hopefully trigger and guard will be installed then. The trigger anyhow.  It's a TOW Bedford County kit. 45 cal
Title: Re: touch hole liner install ooops
Post by: snake eyes on March 02, 2015, 05:56:35 PM
Keep us appraised (with photos if possible). Pictures make us  :shake [/color]
Title: Re: touch hole liner install ooops
Post by: 509thsfs on March 02, 2015, 09:13:21 PM
Well, here's some pics as to the status so far. Been keeping a photo journal of it.  Easiest way to get them all on here for now.  Pretty rough on some of the inletting, but will be cleaned up as the build gets closer to the end. My 1st, so bare with me. Any suggestions welcome.

Title: Re: touch hole liner install ooops
Post by: Daveco on March 04, 2015, 10:25:41 AM
Hey 509thsfs! I'm on my first build too, and like you I have discovered that no matter how hard a feller tries, some things seem to have a mind of their own and spin completely out of control at their first opportunity. Then when the smoke clears and the dust settles, I'm left with the final results.  :Doh!  I am having a great time building and researching though, and the boo-boos are just part of the learning curve. As a plus, I always think that most (if not all) of the folks that will see this first rifle of mine wouldn't know the difference between the result of my oops and the way that it's "SUPPOSED" to be just as long as it usually goes boom when you pull the trigger. That's assuming I don't point it out to 'em....    

Dave.
Title: Re: touch hole liner install ooops
Post by: 509thsfs on March 04, 2015, 11:10:12 AM
Heck this was supposed to be an easy one compared to my lock bolt. I had a 1/4 square inch  to work with with absolutely no room to fudge and nailed it dead center. It was my biggest worry of all the drilling. Cold not have paid to have it done better. No biggie. Not as concerned about the function as I was. Only the range will tell and that is a ways off. Other things to worry about now. Like the trigger and guard this weekend.
Title: Re: touch hole liner install ooops
Post by: Captchee on March 09, 2015, 09:50:59 AM
. while not perfect  it should be ok . i you end up with issues , i doubt you will . i would make a new liner  with an off set hole . that way you can move the liner more center and still use the existing liner location .

As to how it happens , ?? It happens . that’s all I can say . Sometimes I think maybe it maybe the angle of the light …..?? don’t know . But even after all these years , there are times when  I go ; HOLLY!!! Crap how did that happen ?.
 Now ….., the flash hole  or installation of a liner is one of the very last steps  I do . Locating the position is one of the first things I do . That way  I have to lock at the mark  through the whole build .
Title: Re: touch hole liner install ooops
Post by: rollingb on March 09, 2015, 10:15:13 AM
Quote from: "Captchee"
. while not perfect  it should be ok . i you end up with issues , i doubt you will . i would make a new liner  with an off set hole . that way you can move the liner more center and still use the existing liner location .

As to how it happens , ?? It happens . that’s all I can say . Sometimes I think maybe it maybe the angle of the light …..?? don’t know . But even after all these years , there are times when  I go ; HOLLY!!! Crap how did that happen ?.
 Now ….., the flash hole  or installation of a liner is one of the very last steps  I do . Locating the position is one of the first things I do . That way  I have to look at the mark  through the whole build .
Same here and so far I've never had a misplaced touch hole,... HOWEVER, that's not saying I haven't screwed up in OTHER places of a build.  :)
Title: Re: touch hole liner install ooops
Post by: 509thsfs on March 09, 2015, 08:54:06 PM
Well, I've moved past the touch hole. No I'm having a heck of a time getting the trigger tuned (Bedford L & R DST). Afraid to file much more off the triggers, but still have problems getting it to get into full cock. Then times when I do, and pull the trigger, it catches on the 1/2 cock notch.  There are times I can't get the set trigger to set. Or sometimes when in full cock, if I set the set trigger, it trips the sear. Thinking the set trigger may still be a bit high.  

Guessing, since when I have the lock out, and  the trigger is not set, I can't fit the lock back into place, that the set trigger is still a bit high and hitting the sear arm.  When I set the set trigger, the lock fits back into place easily.  I'm playing with the backlash screw and set trigger engagement screw .  Had it close a few times.

I have about 8 hours over 3 days into trying to work this puzzle out. I cringe every time I take a file to the trigger bars now, but seems to be slowly helping.  Been reading and following the instructions like crazy. Just don't know when I'd be filing too much off. Or do I still keep going until it "works". That's my dilemma now. well, on the upside, I'm learning. Especially learning when to just walk away and come back and try the next day haha
Title: Re: touch hole liner install ooops
Post by: Captchee on March 10, 2015, 08:13:57 AM
The lock wont go in when the trigger is un set , because the rear trigger bar will be up , blocking the sear . If  the lock goes in when set , then you have clearance . But you may not have clearance to cock the lock  since the sear moves down a little for each notch .

 Here is my suggestion

 Take your lock out and look  in the sear hole of the stock , with the  trigger un set .
 You should see  the   rear trigger bar angled across the hole .
Now set the trigger . Now the top edge of  both trigger bars should be bellow or even with the  bottom of the sear hole .
 If they are not , then the trigger bars need to be filed “DON’T go below the engagement notches where the triggers lock under and over each other “
OR
The trigger set itself must be dropped  down a little by shimming under the trigger set .
NOW  when you set the trigger , the bars go below the hole  and your still having issues   with the lock coming to full cock , then I would blacken the bottom and tip of the sear  with transfer ink . Set the lock back to the stock and work it a couple times . Take the lock back out and check for ink transfer around and in the bottom of the sear hole.
 If there is none and  the lock will cock set but not unset . Then your issue is the trigger main spring is to tight . Back the screw off a ½ turn

As to the trigger not setting . Most times that do to the small trigger spring on the front trigger being bound up . IE the front trigger notch  is at an angle and the rear triggers , trigger notch , cannot engage  .
Title: Re: touch hole liner install ooops
Post by: 509thsfs on March 10, 2015, 08:34:35 AM
Thanks. From what you say I am on the right path. Been doing pretty much as you describe. Just been going slow and a little at a time. Hopefully soon it will fall into place. Just need to make sure I keep walking away when frustrated so I don't get in a hurry and overdo anything.
Title: Re: touch hole liner install ooops
Post by: 509thsfs on March 12, 2015, 05:55:57 AM
Well, it fell into place last night.  Did find a couple places where a little wood needed removed. Not where you would think to look, but after working the lock so much, I actually found some small "shiny" spots where some rubbing was taking place.  There were two places where lock parts were actually below the edge of the lock plate when at full cock. After removing that it just took a little more filing on the front trigger.  Finally can move on.

Captchee. Thanks for the advice. Like I said, was not what we were looking for, but it did make me look at other places that could cause the problem.
Title: Re: touch hole liner install ooops
Post by: Three Steps on April 03, 2015, 09:23:57 AM
I have quit using touch hole liners. Just cone out the touch hole a little on the outside. I don't like the thought of the cone on the inside trapping fouling, the threaded hole interfering with the end of the breechplug threads, or just the looks. I know they had some in the old days but not as a general rule. I have also used a plain carbon steel bolt tightly threaded and peened over and filed flush then drilled. You could also drill a little off center of the bolt and correct the placement of the touch hole. Also you don't have that ugly screw driver slot showing but of course the liner is not removable unless it is drilled and use an ease-out.
Title: Re: touch hole liner install ooops
Post by: 509thsfs on July 21, 2015, 08:47:09 AM
Guess it worked ok even with the oops.  Did slow down after a while, but that had a lot to do with humidity, even with wiping down and picking vent after every shot.  I did open the vent hole a little bit before shooting, still can't get a pipe cleaner in there like my others, but really don't want to open it up any more.

Video,,,if you have not seen it from my other thread  

Bedford Co. Flintlock Test Fire - YouTube (https://www.youtube.com/watch?v=VGrO1Rs9hnc&feature=youtu.be)
Title: Re: touch hole liner install ooops
Post by: blackpowderbill on July 25, 2015, 06:38:56 AM
SHOOT IT! A LOT~   Then when the touch hole needs replacing make a blank one and drill the hole off center in the blank if it really bothers you. I have a 40 cal Vincent that the drum was installed about 1/8" to far back and the guy filed a grove in the breech plug face. so the hole was not blocked and the plug would screw in.

After about a 1,000 shots I pulled the breech plug, cut it back, polished and reinstalled.  So it is a tad short of sitting on the inside lip , EH. After 4,000 + shots it works just great.