Author Topic: light strikes FTF- odyssey of a kadet  (Read 6110 times)

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Offline DenStinett

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Re: light strikes FTF- odyssey of a kadet
« Reply #15 on: August 09, 2019, 08:59:51 PM »
It's tough to get a feel for the Pics, so I hope you don't mind that I resized them to fit the frame:


























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Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #16 on: August 16, 2019, 04:36:20 AM »
It's tough to get a feel for the Pics, so I hope you don't mind that I resized them to fit the frame:

Thanks a lot Den! Way better.

« Last Edit: August 16, 2019, 05:55:49 AM by joerchi69 »

Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #17 on: August 16, 2019, 04:37:39 AM »
Yesterday i tested a brandnew FP and FPstop in the kadet. To compare it to my old worked over one. I let the shortened FPspring in. The results were the same as with my worked over FP, with the leathe shortened shoulders, who turned out to be in the same size as the newly orderd FP. The new FPstop is clearly better manufactured on the hammer side, then the original.
A box of CCI standard went throug with no problems. The box Geco semi auto had 2 non feedings, 4 light strikes and one stove pipe. Glad for having one ammo working fine, now i would like the system to function with other sorts of ammo too. Not with all, but a few more. Also to ensure it is working all the time with the CCI standard. And to have options to try out new ammo too. With the 9mm upper the shadow1 was reliable as ever.








Left FP modified on hammer end for 180 degree turn around, to test other impact point
« Last Edit: August 18, 2019, 12:10:57 PM by joerchi69, Reason: Left FP modified.. »

Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #18 on: August 16, 2019, 06:01:16 AM »
It's tough to get a feel for the Pics, so I hope you don't mind that I resized them to fit the frame:

Found the auto resize function on imgur then because of your hint. Will use 1280x1024 (for 19 inch monitor) for perceptibility.

Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #19 on: August 18, 2019, 11:53:50 AM »
This shooting day i repeatet the test with the new FP and FPstop in the kadet. To compare it to my old worked over one. I let the shortened FPspring in.
Of two units of 50 the first Blazer package worked fine, the second had four light strikes. With the following 2 boxes CCI SV (each 50) the first one went fine. With the second carton CCI SV surprisingly i got with one box 3 FTfire and one time slide not opening on the last shot. Some days ago the CCI SV worked without hickups. All FTfire hit the target with the following hammer fall.
« Last Edit: September 21, 2019, 04:20:52 AM by joerchi69 »

Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #20 on: August 22, 2019, 03:04:47 PM »
Changed back to my old and worked over firing pin (polished and shoulders reduced a bit) and stop.100 shots of CCI sv went of with no probs this afternoon (3 ftf last time). One failiure to feed and two light strikes with fifty CCI Blazer. The placement of the strike is fine i hope. The impact on the rimfire cases looks not too smashing. I will work on this.



Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #21 on: August 29, 2019, 07:01:49 AM »
The original excess length of the original FP. Its about 0,35mm = 0.0138 inches. Its the same on my old and a new FP i ordered. To have the end longer sticking out for may be quickening the FP when hit by the hammer, i will shorten the rear shoulder stop on both. And test it with Blazer and CCI sv.

original excess length of the original FP. about 0,35mm = 0.0138 inches
« Last Edit: August 29, 2019, 04:47:51 PM by joerchi69 »

Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #22 on: August 29, 2019, 04:32:11 PM »
In the morning i worked the FP1 and FP2 over in the lathe at Herberts (90) workshop.
FP1 now shows a excess length of 1,17mm = 0.0460 inch. This afternoon i tested it.
130 shots of Blazers went of in a row as they should. In the next 50 i had 3 missfires. I cleaned the breech face a little with a toothpic and went on with a pack of CCI SV wich went nearly fine. Singly the slide failed one time to stay open on the last round. In the next pack then 3 missfires. Maybe my Kadet needs cleaning earlyer in this stage of development. FP2 i will test next time.

FP1                                                                        FP2
excess length          1,17mm =   0.0460 inches              0,75mm =  0.02952 inches
shoulder to shoulder  2,659mm = 0.10468 inches            3,015mm=  0.11870
rear shoulder to end  4,1mm =    0.1614 inches              3,7mm =    0.14566
over all length          58,25  =    2.29330inches              58,35  =    2.2972

FP3 is a new untouched one, waiting for starting at zero  ::)

(conversion mm to inches with:   https://mdmetric.com/tech/cvtcht.htm )


FP1 length above firing stop 1,17mm =   0.0460 inches       
« Last Edit: September 15, 2019, 05:21:25 PM by joerchi69, Reason: width=900 »

Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #23 on: August 29, 2019, 04:37:03 PM »
FP2 length above firing stop 0,75mm =  0.02952 inches
« Last Edit: September 15, 2019, 05:22:07 PM by joerchi69 »

Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #24 on: August 29, 2019, 05:01:16 PM »
The three misfires from shot 130 to 180. Impact signiture changed to unsharp impression on two of the rims ?  :o
 - Or the depth of focus is more to the dirty breech face.  ;)
« Last Edit: August 29, 2019, 05:20:50 PM by joerchi69 »

Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #25 on: August 29, 2019, 05:07:06 PM »
Same FP1. Different impact sizes ? Obscure. A case of a missfire that went of on the second hit.

Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #26 on: August 29, 2019, 05:13:36 PM »

Comparing FP1 marks on Blazer (left) and CCI SV (right) rims.

« Last Edit: August 29, 2019, 05:18:41 PM by joerchi69 »

Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #27 on: September 01, 2019, 01:57:26 PM »
No fotos shot today but testet the above mentioned FP2 (length above firing stop 0,75mm =  0.02952 inches).
So she rear shoulder is less shortened than on FP1. The front shoulder and everything else on the pin is original and new. It is just not hitting the barrel end with its chissel tip. The FP spring is the shortened one i used all the time.
 
I shot 4 cartons of 50 bullets. One and two hand grip. Clean pistol and FP channel. 20 lbs. HSpring plus the spacer for higher pre-load.
Started with the 50 Blazer. The slide stayed not open one time. 3 FTFire. In the next box of CCI sv 3 FTFire, 2 times slide failiure and a stove pipe. Same ammo third box, one closing slide on the last round again and 2 stove pipes. The fourth box Blazer 5 FTFire.

The strikes are still too light. The longer end through a shortened backstop shoulder is not helpfull. Thought of ordering the extra power hammer springs from wolff / gunsprings.com but then the slide maybe has even more to work against the hammer. And causes FTFire and may be more stove pipes. No stronger hammer spring or a thinner or no spacer would help the slide to work. The stovies are a little surprising because i expected them to be settled once and for all with the mod of the ejector, and confirmed with 2000 shots. My be the pre stressed HS is to blame.

Next check will be the new all original FP. Will not be surprised having FTfire and other issues.
But shooting the kadet is still fun and helping to cultivate my skills.  ::)

A prolonged FP with more over all length could be usefull. Designed to reach the brass earlyer but not to hit the barrel. Short enough not to activate the rim with a gun accidentially falling down on the hammer. That or the xtra power hammer springs are the next theorys to try to get a reliable kadet. Or another hammer. Because the shadow 1 hammer is possibly different (in weight) to the regular CZ 75 hammer ?




« Last Edit: September 01, 2019, 05:08:58 PM by joerchi69 »

Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #28 on: September 01, 2019, 02:09:37 PM »
Also possible i lose my patience to get it running fine. Then after all, it is the sufficient reason to purchase a complete stand-alone .22 lr of higher quality and flawless reliability.

Offline painter

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Re: light strikes FTF- odyssey of a kadet
« Reply #29 on: September 01, 2019, 03:37:32 PM »
What weight hammer spring are you using, Joe?
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