Arbor Ding?
- Thread starter red96ta
- Start date
Ideal Tool
Moderator
Hello, red96ta. It looks to be just in back of locating pins in frame front...Have a look at the inside of barrel arbor hole..there could be a sharp burr or edge.
Thanks guys...it's a little disconcerting. I took a look at the arbor hole and it appears to be in great shape along with the locating holes. I went as far as to flash a light down the barrel on full cock to make sure that everything was lining up properly and it's dead on. The wedge fits nicely in the revolver too.
Here's another shot with the cylinder on and in half cock. In full cock, it's exactly on the mark which leads me to believe that it's the cylinder.
Also, here's a shot down the arbor hole if that helps...
Here's another shot with the cylinder on and in half cock. In full cock, it's exactly on the mark which leads me to believe that it's the cylinder.
Also, here's a shot down the arbor hole if that helps...
Ideal Tool
Moderator
Hello, red96ta..are you absolutly certain it wasn't on there when you purchased the gun? That arbor has case-colors..it's surface is glass hard..but only a few .001"'s of an inch deep. A ding would have pushed metal surface in..but color wouldn't have changed..that mark almost looks like a file cut..the metal is bright..can't imagine a properly fitted cyl. being able to cock that much. Many times over the years, after I have had a brand new gun..or even a used one..I will find little marks or dings I never noticed before.."How'd that get there"? Could this be the case?
Ideal plus one
The mark is not of the character which might be produced by a deformity of the cylinder.
The deformity in the cylinder which would make a mark of the depth shown would make the pistol difficult to assemble and disassemble (Note the from the appearance in the photo that the mark is made on a part of the arbor which is of lesser diameter than the end of the arbor where the wedge goes through.) not to mention difficult to cycle. If it were the cylinder making the mark, because of a burr or deformity which extended far enough to mark the arbor as has been done, the cylinder would never go onto the arbor.
It is entirely possible but (IMO) unlikely that the cylinder made the mark by impacting and pressing against the arbor at that spot during loading (if you load with the lever and not a press). The lever might be pushing the arbor down against the top of the arbor. This might happen if the cylinder was a bad fit for the arbor. If this were true you might notice six deformities in the cylinder right at the forward rim of the arbor hole. I don't think this is the case, because of two things. 1. The arbor to cylinder fit would have to be way off and noticable to produce such a mark in the arbor. 2) The character of the mark seem to be completely wrong for even this possibility.
It appears (IMO) to be a mark deliberately placed on the arbor perhaps to mark the length of the cylinder for example as the owner were fitting a replacement cylinder.
The mark is not of the character which might be produced by a deformity of the cylinder.
The deformity in the cylinder which would make a mark of the depth shown would make the pistol difficult to assemble and disassemble (Note the from the appearance in the photo that the mark is made on a part of the arbor which is of lesser diameter than the end of the arbor where the wedge goes through.) not to mention difficult to cycle. If it were the cylinder making the mark, because of a burr or deformity which extended far enough to mark the arbor as has been done, the cylinder would never go onto the arbor.
It is entirely possible but (IMO) unlikely that the cylinder made the mark by impacting and pressing against the arbor at that spot during loading (if you load with the lever and not a press). The lever might be pushing the arbor down against the top of the arbor. This might happen if the cylinder was a bad fit for the arbor. If this were true you might notice six deformities in the cylinder right at the forward rim of the arbor hole. I don't think this is the case, because of two things. 1. The arbor to cylinder fit would have to be way off and noticable to produce such a mark in the arbor. 2) The character of the mark seem to be completely wrong for even this possibility.
It appears (IMO) to be a mark deliberately placed on the arbor perhaps to mark the length of the cylinder for example as the owner were fitting a replacement cylinder.
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Smokin'Joe
New member
Hot gases from the burning powder cut into the arbor like a cutting torch. This is perfectly normal. All my Colt clones exhibit this feature.
are you absolutly certain it wasn't on there when you purchased the gun?
Well, uh, I don't know...It's kinda like buying a new car only to discover something strange only after the first thorough carwash. It could be that it was there the whole time from the factory and I never noticed it until breaking it down for a cleaning, since cleaning (like a carwash) is kinda an intimate moment between man and machine where you learn little intricacies of the machine.
Well, uh, I don't know...It's kinda like buying a new car only to discover something strange only after the first thorough carwash. It could be that it was there the whole time from the factory and I never noticed it until breaking it down for a cleaning, since cleaning (like a carwash) is kinda an intimate moment between man and machine where you learn little intricacies of the machine.
That is one way of telling how much the gun has been shot. With that "lesion", anyone telling you the gun is NIB is a liar. I always look for the amount of gas cutting to tell how much the gun has been shot. It is a normal "wear & tear". All of my guns have it depending on how many rounds I have put through them and at what charge.
Ideal Tool
Moderator
Wow! Thanks beagle333 for pics..I never would have thought B.P. would gas-cut like that! But on 2nd. thought..it does make sense...In my 1863 percussion Shilo Sharps..the nipple base very soon gets a groove cut in it from gas making that 90 deg. turn. Now I'm gonna have to check my arbors!
Fingers McGee
New member
smokin joe said:
All of my C&Bs have one. At least the ones I shoot.
robhof
I have a Dan Wesson Supermag 357 that Ruger discontinued their version because of the flame cutting of the top strap and throat erosion, Dw just offered a spare barrel and after years of ram shooting competition, it was found to be a self stopping problem, even many of the old Rugers are still competing, the gas burning process also heat hardens the area and stops after a short time, at least that's what the DW smith that I talked to when I got my gun said. I've had it since 1992 and shot many rounds through it and it still hasn't gotten any worse than when I 1st got it used. I would believe this would also apply to the Colts as cut arbors would be a problem with many used in CAS competition for years.
I have a Dan Wesson Supermag 357 that Ruger discontinued their version because of the flame cutting of the top strap and throat erosion, Dw just offered a spare barrel and after years of ram shooting competition, it was found to be a self stopping problem, even many of the old Rugers are still competing, the gas burning process also heat hardens the area and stops after a short time, at least that's what the DW smith that I talked to when I got my gun said. I've had it since 1992 and shot many rounds through it and it still hasn't gotten any worse than when I 1st got it used. I would believe this would also apply to the Colts as cut arbors would be a problem with many used in CAS competition for years.
