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Post by Big Bore on Mar 31, 2020 8:14:57 GMT -5
Working on my first Bisley Conversion on a SBH Hunter. Got everything back together and have a problem.
The hammer won't cock/rotate the cylinder. With the cylinder out, it cocks/fires perfectly. With the cylinder pin in, it cocks/fires perfectly. But when I put the cylinder in, it feels like the pawl is jamming up. I've checked and it doesn't look like the transfer bar is hitting the firing pin. I've checked and the plunger/spring are installed properly and engages the pawl as it should (with cylinder out).
But with it completely back together, I can only pull the hammer back an half-inch or so and it feels like something binds up. I'm almost positive it has to do with the pawl but I may be wrong.
I've installed a new grip frame (obviously), bisley hammer, bisley trigger, and new top/back grip frame screws. The gun also has an aftermarket cylinder pin.
I recorded it on my iphone but don't know how to upload it here.
Confused in Texas,
Randy
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Post by Big Bore on Mar 31, 2020 8:28:00 GMT -5
I put the video on youtube.
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Post by bigbrowndog on Mar 31, 2020 10:09:46 GMT -5
Check your cylinder pin and make sure it is pushing you transfer bar back away from the firing pin. I’ve had a few instances where it (T bar) would jam up under the firing pin and prevent cocking. Slightly stoning the T bar and putting a bevel to help it slide past the FP will help but just enough not too much,
Trapr
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Post by bradshaw on Mar 31, 2020 10:17:47 GMT -5
Working on my first Bisley Conversion on a SBH Hunter. Got everything back together and have a problem. The hammer won't cock/rotate the cylinder. With the cylinder out, it cocks/fires perfectly. With the cylinder pin in, it cocks/fires perfectly. But when I put the cylinder in, it feels like the pawl is jamming up. I've checked and it doesn't look like the transfer bar is hitting the firing pin. I've checked and the plunger/spring are installed properly and engages the pawl as it should (with cylinder out). But with it completely back together, I can only pull the hammer back an half-inch or so and it feels like something binds up. I'm almost positive it has to do with the pawl but I may be wrong. I've installed a new grip frame (obviously), bisley hammer, bisley trigger, and new top/back grip frame screws. The gun also has an aftermarket cylinder pin. I recorded it on my iphone but don't know how to upload it here. Confused in Texas, Randy ***** Randy..... when you changed hammers, did you put the put the hammer plunger from the Super Blackhawk hammer in the Bisley hammer? I would not take a file to the transfer bar. The base pin plunger should push the transfer bar rearward enough to clear firing pin without alteration. Note also, the transfer bar should not override the firing pin by pulling trigger with hammer down! David Bradshaw |
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Post by Big Bore on Mar 31, 2020 15:21:17 GMT -5
***** Randy..... when you changed hammers, did you put the put the hammer plunger from the Super Blackhawk hammer in the Bisley hammer? I would not take a file to the transfer bar. The base pin plunger should push the transfer bar rearward enough to clear firing pin without alteration. Note also, the transfer bar should not override the firing pin by pulling trigger with hammer down! David Bradshaw Bingo! That was my mistake. All good and fixed now. Thank you sir! |
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Post by bushog on Mar 31, 2020 19:17:15 GMT -5
Bingo! That was my mistake. All good and fixed now. Thank you sir! What was it, the hammer plunger or the base pin? I'm guessing the base pin. |
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Post by Big Bore on Mar 31, 2020 20:49:44 GMT -5
Hammer plunger. Didn’t even cross my mind to move it from one to the other. I’m kinda dumb though.
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Post by bradshaw on Apr 1, 2020 9:17:43 GMT -5
Hammer plunger. Didn’t even cross my mind to move it from one to the other. ***** Randy.... Blackhawk, Super Blackhawk, and Bisley hammers all use the same HAMMER PLUNGER & HAMMER PLUNGER SPRING. When installing a hammer, it is my practice to push out the retaining pin and remove plunger & spring. Clean hole inside hammer. Inspect plunger and spring. A bent plunger will tie up gun. A broken spring prevents proper operation of plunger. Rough or careless assembly probably is the most common cause of a bent plunger. A chip of metal inside the hole will bind operation. Insure hole is clean, then lube. My preference is molydisulfide chassis grease or synthetic motor oil. I haven’t used store bought gun oil in decades. (High Power Rifle great Sam Burkhalter got me switched from GI Lubriplate to synthetic grease on the M1 National Match when I was 16. Reason: better long-fire operation in the rain.) Compared with the hammer plunger on a Peacemaker-style Ruger, the New Model is thin. This makes it more fragile. The offset, New Model sear engagement is twice as strong as on Peacemaker-style lockwork. Do not fear lubrication on contact patch between hammer & trigger. A perfect trigger job is still perfect when lubricated----and stays consistent longer. David Bradshaw |
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