I decided to get one of the first run overprint books from Jim Hill. Thanks for the recommendation!
- - - Updated - - -
Thank you for this! It provides me with a frame of reference that is quite large. I agree that this forum is easier to use.
Tom, alfajm, and Dick thank you for your tips on taking off the lock plate. I see exactly where the stock was chipped from this before at center bottom. Here are some photos:
IMG_1360.jpg
The Stock
IMG_1361.jpg
Lockplate Overview. It's obvious some grinding has been done on the tumbler and possibly even some welding. The fragment of metal you see below the lockplate was laying inside the stock when I removed the lockplate.
IMG_1363.jpg
IMG_1364.jpg
IMG_1365.jpg
You can see that the arm that interacts with the trigger has been ground down as well. I would LOVE to hear everyone's thoughts on this.
Thanks,
Hunter
This is a follow-up to my first set of pictures of the lockplate internals. This set of photos is with the hammer closed.
IMG_1367.jpg
The bit welded on to the tumbler is where I believe the proken piece of metal came. I guess this is a catch for the hammer at the full closed position. Seems that when it was fired it broke.
IMG_1368.jpg
Closed lockplate overview
IMG_1369.jpg
You can see here the spring was ground as well.
IMG_1365.jpg
[I]In this photo, I am highlighting the grinding matchmarks on the trigger arm. It appears the trigger was only ground to get the lockplate back in in the closed position from my best guess. The trigger has about 1/8" of play when measured from the bottom "tip" of the trigger. Is that normal?/I]
Last edited by huntylterer; 06-22-2021 at 08:19.
Appears you need a “new” tumbler.
The mainspring may be OK, even with the grind mark.
Check with Al Frasca at trapdoorcollector.com for parts.
A GREAT guy to deal with!
Being as you need a new "replacement" tumbler if Al doesn't have one look on E-Bay there is a lot of trapdoor parts and stuff on there all the time and prices are generally reasonable.
It appears from the grinding on the main spring and sear that it was done to eliminate the interference problem.
You may want to think about replacing the tumbler and sear to the three click version for safety reasons the middle click sets hammer open not on full cock for loading ease.
The 45-70 Springfield Joe Power book it excellent for info history on these guns, and Spence Wolfs book Loading the original 45-70 is very very good on loading and shooting these guns and also covers the reloading equipment required.
Goode luck happy shooting
Jim O
The sear and the tumbler need to match!