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91
Gunsmithing / Re: Measuring mainspring strength
« Last post by Coffinmaker on March 22, 2024, 09:37:06 AM »

 :) Navy Six  ;)

Well Ok, a couple of thoughts.  First thought, Trigger pull only measures trigger pull.  A poorly fit trigger can have a heavier "pull" than a well fit trigger, regardless of Main Spring.

One would have to build a jig to hold ALL subject Main Springs in a like position, then connect them to a gauge that measures the amount of "pull" required to move the action end a measured amount of deflection.  Then one would have to measure the effect of "stacking" (increased pull) over the full deflection of the spring.  Once documented, one would have to insure there was absolutely NO drag in the moving parts of the subject test action.

The results, as applied to the reaction of Percussion Caps, would then be skewed by the differentiation of material used by the manufacturers of differing cap brands.  Also skewed by the differing types/amounts of explosive material and thickness of sealant, also skewed by specific lot numbers of the various manufacturers.

The same variations would also be observed in various Main Springs, by manufacturer, based on lot numbers (unknown) and varying dates of manufacture.

Considering ALL the variables and complications, I think the objective "Gee, That one feels different" is as definitive as it's going to get.  along with measuring the specific Brisbane of the various caps.  Also, the test subjects would all have to be tested on exactly the same set of nipples.  Yule also need to arrange for a High Speed High Frame Rate camera and a skilled operator with a concurrent trigger mechanism.

Have Fun!!
92
Uberti, Pietta and other SAA Clones / Re: Cimarron Meldrum
« Last post by Crossdrawnj on March 22, 2024, 08:44:17 AM »
Ok. 
93
Tall Tales / Re: Cawfee,Tea, Grub while Marching to warmer weather.
« Last post by Silver Creek Slim on March 22, 2024, 07:41:13 AM »
Morning y'all.
Coffee and tea are hot.

2" so far.

'Tis 21 and light flurries. "Light snow in the morning  then a chance of light snow in the afternoon. Snow accumulation of 1 to 2 inches. Highs in the middle 30s. East wind 5 to 10 mph shifting to the northeast in the afternoon. Chance of snow near 100 percent."

Slim
94
BROW / Re: Trapdoor Rear sights?
« Last post by Niederlander on March 22, 2024, 07:15:16 AM »
What particular sight are you looking for?  1873?  1879?  (And yes, there are some variations in the main models of sights.)
95
The Longbranch / Re: gunoholic
« Last post by Major 2 on March 21, 2024, 10:53:27 PM »
Boy, time has sure flown by, the thread is near 5 years old.  :o

I wanted to recall the time frame of a purchased piece VS another, as to which order one came before the other  ???
 

 
 
 
96
BROW / Re: Trapdoor Rear sights?
« Last post by St. George on March 21, 2024, 10:01:32 PM »
All original sight bases are interchangeable.

Any Trapdoor with slotted screws has had its sight changed - factory installation used a blind screw head.

If you're going to do this, the original's base will have a 'C' on its side - even the repros will - and original 'C' marked rear sights are difficult to find - often exceeding the cost of the Carbine itself, when one's restoring a nicer one.

Scouts Out!
97
BROW / Trapdoor Rear sights?
« Last post by Doc Holloman on March 21, 2024, 09:15:20 PM »
I have an original trapdoor carbine with a Buffington rear sight.  While I find the Buffington a fine sight for shooting from a bench, for quick target acquisition shooting at 50-75 yards I find I would prefer one of the earlier trapdoor carbine sights.  Before I order one, my question is: are all the various trapdoor rear sights drop-in interchangable?  I certainly don't want to go drilling on an original trapdoor barrel.
98
Spencer Shooting Society / Spencers in Baltimore
« Last post by DJ on March 21, 2024, 02:48:51 PM »
Just back from the Baltimore Show.  Somewhat smaller this year, but packed with interesting arms--kind of like a museum, but have you ever tried to pick up one of the display guns at the Smithsonian to check the bore?  There seemed to be more Spencer rifles this year than in the recent past--about 25 or maybe more, mostly M1860s.  Four were on one table, one of those with a descriptive sign (and price).

It was a very good time.
99
Tall Tales / Re: Cawfee,Tea, Grub while Marching to warmer weather.
« Last post by Delmonico on March 21, 2024, 02:20:05 PM »
52 and sunny.  Rita let the dog out yesterday, first time since Sept.  Back stairs are not the greatest. 

It means I can leave for a while if she don't want to go. 

She also had us run around and find stuff, she's back crocheting again. Much better than just watching TV.

Ordered a plush possum for my granddaughter. Long story for another day but her Grandmother just rolled her eyes (my Ex) at the game feed the other day.  A long story that stays alive and dates back to the summer 0f 1981, a tale worth telling and needs wrote down. ;D  Amazon is handy but don't use them much.  3 bigs roll things of the black yarn she uses came also, plus a spool of 6 lb braided.  Going to do some this year.  Probably at first go to the one city lake and fish of the fishing dock with the other old men and see how it goes. 

Going to use Dad's 5500C, I got it for him Christmas 1977.  He always wanted one but not for $50.   Offered it to brother or the kids, seems I am the only one smart enough to use one. ;D



 
100
Gunsmithing / Measuring mainspring strength
« Last post by Navy Six on March 21, 2024, 11:13:33 AM »
I intend to conduct a series of tests on Colt style percussion pistols in regards to mainspring strength and its affect on percussion cap performance. I would like to accurately measure and compare a variety of mainsprings. I do have a trigger pull gauge and considered measuring that as I swapped out different mainsprings on the same gun. Is there a better way of doing this? I don't want my results to be based on "well, this spring feels heavier than that one". Any thoughts would be appreciated.
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