Another Thumble broke.

Muzzleloading Forum

Help Support Muzzleloading Forum:

Mtman725

The Last Best place, MT
MLF Supporter
Joined
Dec 11, 2021
Messages
543
Reaction score
493
Location
Montana
I am so glad I spent the time and effort to fix the original lock when the thimble broke the first time and had a spare, the replacement did the same thing. You can see that there's 10 to 20ths slope in the bridle hole where the thumble fits in. Ordered another one off S & S. But it makes me give a pause to to keeping a back up rifle of the same make,model,caliber or selling them both and getting a better rifle ? What your thoughts?
 
Last edited:

1BadDart

40 Cal
Joined
Dec 26, 2021
Messages
381
Reaction score
385
1badDart, can you share what process you used that broke the tumbler? information on what not to do is as valuable as what to do.
by the by, I had a demon for years. for me they stopped making interesting cars around 1970.
Instead of walking over to the vice to lay the lock plate on to drive the tumbler out of the cock I held it in my hand and to drive it out.
 

Mtman725

The Last Best place, MT
MLF Supporter
Joined
Dec 11, 2021
Messages
543
Reaction score
493
Location
Montana
It broke in the same place as the first one, was just shooting and wouldn't hold full cock again. You can see the slop where the tumbler does into the bridle . And the tip of the full cock breaks right off. So this is the second time with the CVA mountain rifle that's its happen. So I've decide to roll it and look for a better 54. Anyone have a good one they want to part with?
 

Attachments

  • 20220619_083649_03.jpg
    20220619_083649_03.jpg
    147.3 KB · Views: 0

Notchy Bob

58 Cal.
Joined
Apr 6, 2014
Messages
2,081
Reaction score
3,687
Location
Florida
You did ask for thoughts. From your previous posts, it has seemed that you like the rifle, except for the problem with the lock. If it were me (and it isn't), I would try to round up the $200 for the L&R lock upgrade. The L&R flint locks are known to sometimes have problems sparking, but this is a non-issue with the percussion locks and the L&R lock innards are pretty good. Definitely a step up from the CVA locks. That should keep you shooting.

Good luck!

Notchy Bob
 

SDSmlf

70 Cal.
Joined
Nov 4, 2006
Messages
4,749
Reaction score
4,653
Location
Western North Carolina
I have seen a number of broken tumblers and sears over the years,and many times it came from dry firing the set triggers from the half cock position. Used to be suggested by TC and there still plenty of knuckleheads on YouTube suggesting to do it. May not be your issue, just venting a concern.
 

Mtman725

The Last Best place, MT
MLF Supporter
Joined
Dec 11, 2021
Messages
543
Reaction score
493
Location
Montana
I have seen a number of broken tumblers and sears over the years,and many times it came from dry firing the set triggers from the half cock position. Used to be suggested by TC and there still plenty of knuckleheads on YouTube suggesting to do it. May not be your issue, just venting a concern.
I don't dry fire it half or full cock,I am just going to roll it, and up grade.
 

rafterob

62 Cal.
Joined
Oct 3, 2007
Messages
4,119
Reaction score
1,204
Location
Asheville NC
My Mtn. Rifle lock looks a lot better than that one. The sear noses of CVA locks are prone to breaking, usually when something happens to cause it to stop at half cock. In my case, that was pulling back the hammer past half cock and releasing it to catch on half cock and eject a stuck cap. Worked well to get the caps out but I broke two sears in 3 years before I learned my lesson.
 
Top