VA_XTC_Shooter
Silver $$ Contributor
And thanks to Jim Borden for agreeing to do this.This is one of the better Cortina videos. Mr. Borden really explains and shares a lot. I learned quite a bit from the video.
Thanks to Eric for doing these.
Agreed. Jim is full of information and really does a good job on his actions. This interview with Borden was excellent and is right there with your’s and Tom’s.I consider Jim a friend even though we have never met. Definitely one of the guys that really gets actions. Theres not as many of them as you would think. He was the first timed action out there that had good ignition, at least in my opinion. It was a great interview. I do hope he has him on again.
Yes, fairly common knowledge. He references it the video right at the beginning.He is also an engineer if I'm not mistaken...
He is also an engineer if I'm not mistaken...
Yep, I'll take that but my wife might disagree.Haha you could probably blame him for that, with his job being making it as thin as possible while maintaining tensile strength.
He took our toilet paper from us, but gave us the best actions. I'm happy with that trade off.![]()
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I've never seen those instructions. I have not done many but I've always tried to keep that clearance at about half of that without issue. There are certainly others, Jim included, with far more experience in that area than myself. Jim's actions are top notch. I don't question much that he does and I'm not questioning this either. They work as received and are very consistent. The best IMHO.Borden in the video stated he went to an .065" diameter pin tip instead of the common at the time Stiller .062". His old bolt bushing instructions call for an .062" pin with an .065" reamed hole.
The pin tip dimensions in the old instructions was .062" +- .0005" by .400" longI've never seen those instructions.
Call him. Without looking it up, it sounds reasonable to me but I'm not sure of his process. I'm pretty sure he'd share that info, though, as it's pretty generic heat treat info.Great down to earth approach to just about everything.
Since the interview is out there, I would ask him what his tempering temperature is. He is establishing a finished action with a RC hardness in the low 40’s giving a nominal tensil strength around 175,000 psi.
Since quenching 416 from 1800 degrees F will only yield a RC hardness of between 41 and 45, exactly what is his tempering temperature?