Author Topic: Kadet Mystery Continues  (Read 9049 times)

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Offline Jake G

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Re: Kadet Mystery Continues
« Reply #15 on: April 26, 2014, 09:52:58 PM »
I remember the topic but haven't had luck finding it yet. If I remember it he equated the mass of the race hammer to that of an S&W revolver target hammer compared to the standard hammer.  However many action shooters using S&W 625's use the smaller hammer which is often bobbed, thereby removing mass and increasing the speed of the hammer. The idea is that the heavier hammer strikes with a greater force, however the lighter hammer would have greater kinetic energy due to the increased speed. Now I am no physics expert but we need to determine what's need to reliably light off .22 lr rounds. Greater force or kinetic energy?  I'm leaning towards KE.  Also, are you running the extended firing pins from CGW?  I don't think any of us are trying to take anything away from CGW, personally I run a bunch of his parts on my various guns and will continue to do so.  I just want to see how far we can push the function of the Kadets.

Offline 75Plus

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Re: Kadet Mystery Continues
« Reply #16 on: April 26, 2014, 10:16:20 PM »
Kevin, I think this is the post that 1SOW was  referring to regarding the weight discussion.

http://www.czfirearms.us/index.php?topic=45203.0

Joe
“Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth.”
George Washington

"A gun is like a parachute.  If you need one, and don't have one, you'll probably never need one again."

Offline handgun2

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Re: Kadet Mystery Continues
« Reply #17 on: April 27, 2014, 07:01:15 PM »
jake & 75,

thanks for giving an explanation and finding some related reading material.   I just fininshed reading the 10 pages on that thread, interesting.  To answer your question, no, I am only using a standard firing pin.     

my question to all is this, during my read of the kinetic energy transfer, one individual commented that an increase in mass of the firing pin would be needed if the mass of the hammer is increased.  Could this be something to look into?   as a former tool/die maker, I know different steels have different weights given same size,  could anyone try making a standard firing pin from 'heavier' steel material?   (for example tungsten? or carbide? for sake of the arguement).

any thoughts? 
k

Offline 75Plus

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Re: Kadet Mystery Continues
« Reply #18 on: April 27, 2014, 07:55:26 PM »
The mass of a firing pin could be increased by increasing the diameter of the section that is inside the Kadet FP spring and using the FP spring from 75B which is only about a third the length of the Kadet spring. I believe an increase in weight of 10% may be possible. 10% may not be a lot but it may be enough to show some difference.
“Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth.”
George Washington

"A gun is like a parachute.  If you need one, and don't have one, you'll probably never need one again."

Offline handgun2

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Re: Kadet Mystery Continues
« Reply #19 on: April 27, 2014, 07:57:35 PM »
so we have a possibility..  could we combine your thought with a 'heavier' material??   is schmecky available? is JonC?   I will try my sources as well.

keep the ideas coming!
k

Offline JonNC

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Re: Kadet Mystery Continues
« Reply #20 on: April 30, 2014, 02:02:37 PM »
75Plus,

An update:
I "slam-loaded" 17 times on Saturday with no immediate light strikes with Federal Bulk.



CZ P-10 C, S, F
CZ 75 P-01
CZ 75 Shadow Duo-Tone
CZ Kadet Kit 2
CZ Scorpion

Offline handgun2

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Re: Kadet Mystery Continues
« Reply #21 on: May 01, 2014, 12:07:26 AM »
anyone following up on using a 'heavier material' firing pin to carry the inertia?

respectfully,
k

Offline Antonio39

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Re: Kadet Mystery Continues
« Reply #22 on: May 14, 2014, 10:34:18 PM »
When  I first got my kadet kit 2, it would FTF 4 out of 10 rounds. I contacted CZ and sent it in. On the warranty log it said they, adjusted slide and extractor spring and replaced mags. After getting it back, I shot about 200 rounds of Remington golden bullets bulk without one FTF.

Offline DenStinett

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Re: Kadet Mystery Continues
« Reply #23 on: May 15, 2014, 12:24:08 AM »
When  I first got my kadet kit 2, it would FTF 4 out of 10 rounds. I contacted CZ and sent it in. On the warranty log it said they, adjusted slide and extractor spring and replaced mags. After getting it back, I shot about 200 rounds of Remington golden bullets bulk without one FTF.

That IS interesting    ???
I wonder what their "adjusted slide" involved ?
And what (if anything) the Magazines could have to do with a Fail to Fire ?
So tell me again how Trump was worse then the 8 years before .... AND what's coming after HIM !

Offline bigM

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Re: Kadet Mystery Continues
« Reply #24 on: May 15, 2014, 06:49:29 AM »
When  I first got my kadet kit 2, it would FTF 4 out of 10 rounds. I contacted CZ and sent it in. On the warranty log it said they, adjusted slide and extractor spring and replaced mags. After getting it back, I shot about 200 rounds of Remington golden bullets bulk without one FTF.
Mine did the same
I cleaned the firing pin channel and the inside of the mags (both of which seemed relatively clean to start with) and bobs your uncle.
No adjustments of any kind, just cleaning.

Clarification;
I believe oil/carbon in the firing pin channel caused light strike issues on my Kadet 2
I believe the mag follower not moving smoothly was the cause of my slide not locking back.
Cleaning both appears to have resolved both problems.
« Last Edit: May 16, 2014, 08:50:51 AM by bigM »

Offline DenStinett

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Re: Kadet Mystery Continues
« Reply #25 on: May 15, 2014, 01:30:54 PM »
The problem with the initials "FTF".....
It can be used for both "Failure to Feed" or "Failure to Fire"
I know my knowledge of Pistols is limited, but;
Could someone tell me how the Magazine has anything to do with a Failure to Fire ?
I thought these trials were centered on Failure to Fire issues
So tell me again how Trump was worse then the 8 years before .... AND what's coming after HIM !

Offline Luis Paz

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Re: Kadet Mystery Continues
« Reply #26 on: May 29, 2014, 05:45:54 AM »
Hi
I have had the same FTF problem with my kadet pistol (not adapter),  what I did was to replace the firing pin with the new model, cut a couple of coils from the extractor spring (according to a comment in another forum the spring hole in the slide is sometimes too shallow forcing the extractor in too much). Also, I polished the magazine edges and surfaces contacting the top round (especially the front the and rim) as to reduce the effort it takes to pull the round into the chamber,  polished the chamber bevel and feeding ramp as well.
Results were very good,  still testing but so far near 100% reliability even with full mags using winchester, sellier bellot, federal and eley ammo.

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Offline DenStinett

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Re: Kadet Mystery Continues
« Reply #27 on: May 29, 2014, 02:37:53 PM »
Welcome to the Forum Luis
Sounds like you've done a bit of work to get you to a more reliable Kadet
The part about Extractor and especially the Mag Lips sounds interesting
Can you please post a link to the Thread you mentioned
Quote
(according to a comment in another forum the spring hole in the slide is sometimes too shallow forcing the extractor in too much)
So tell me again how Trump was worse then the 8 years before .... AND what's coming after HIM !

Offline Luis Paz

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Re: Kadet Mystery Continues
« Reply #28 on: May 29, 2014, 06:34:43 PM »
Thanks Dan
I also installed the adjustable single action trigger,  shadow sear / competition hammer, and polished all relevant parts,  trigger pull is now very smooth and a lot shorter.
I'm sorry about the link to the other forum,  but I couldn't find again.




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Offline Luis Paz

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Re: Kadet Mystery Continues
« Reply #29 on: May 29, 2014, 07:14:38 PM »
Found it.
http://www.czfirearms.us/index.php?topic=48924.15

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