Author Topic: light strikes FTF- odyssey of a kadet  (Read 28618 times)

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Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #225 on: May 30, 2021, 08:09:37 AM »
It went quite good today. Especially in the beginning i could bring 5 in a row into the center of the target 25 meter. The new glas in the shooting glases results in a very clear sight picture. Later on i had a light strike, also with cocking the hammer a second and third time (tooth-pic ::)).Checking the firing pin retaining plate i realised the firing pin had turned a quarter and was blocked in the hole of the retaining plate. Rearranged it worked fine again. Because it was more than one time that it has happened with that lighter firing spring i will have to go on searching for a better one.
 At home i removed it. Wire dia was 0,31 mm/ 0,012 inch. Length was 30 mm/ 1,2 inch. I found nothing with a little more wire diameter so i put in the shortened original FP spring with wire dia 0,48 mm/ 0,019 inch length cut down to 24 mm/ 0,94 inch. So i will give it a try next time. Maybe with the built in components it will work out as reliable. The heavier tactical sports hammer, the reduced power 17 lb wolff hammer spring and the optimised FP4. But also between the nearly reliable wire dia of 0,31 mm/ 0,012 inch up to the original wire dia of 0,48 mm/ 0,019 inch it should be possible to find some more springs for testing. Outer dia from aproximately 3,77 mm to 4,0 mm.

very light strike with blocked FP (tooth pic pointing at)
« Last Edit: June 01, 2021, 06:50:44 AM by joerchi69, Reason: tooth pic »

Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #226 on: May 30, 2021, 10:53:27 AM »






I couldn't get an ID.

Hope it helps you find a spring.

Looks like a right wire diameter was already mentioned by painter some time ago..

Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #227 on: May 30, 2021, 02:02:38 PM »
Realizing there is a little noodeling between the kadet conversion kit and the frame - i got curious.
Upper to frame has a play of 0,5 mm / 0.23 inch. Not at the front sight, where the fitting is in the rails. Only at the rear end at the rear sight. The rear sight blade in itself is a little wobbly too. But here i mean the complete rear end, that can be moved up and down. Did some messuring with the feeler gauge 0,10 mm / 0.196 minimum and 0,6 mm / 0.236 max. Did a calculation using https://stores.kensight.com/front-sight-height-guide/. On the 25 Meter / 27,34 yard target it can add up to a impact distance height variable of 7,8 cm / 3,075 inch. Nice exculpation for poor grouping too.  ::)
Also did measure with the caliper. So the conversion kit borehole is widened - where the upper is fixed within the frame by the slide stop. The bore holes in the frame and the slide stop dia match quite good. Same with the 9 mm slide stop.
Provisionaly i tested and glued in a piece of plastic to take out the play. I dont expect it to be a long term solution. Also the fitting is a little too tight, the slide stop is not moving freely enough axial to catch the slide on the last round, when it should be lifted up by the magazin follower.

« Last Edit: May 30, 2021, 02:19:10 PM by joerchi69, Reason: impact distance height variable »

Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #228 on: May 30, 2021, 02:04:26 PM »
minimum play


maximum play




Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #229 on: May 30, 2021, 02:08:03 PM »
provisorily plastic shim material


Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #230 on: June 01, 2021, 06:38:06 AM »
Got a new lighter FP spring, wire die 0,40 mm/ 0.0157 inch, length 30 mm/ 1,2 inch. outer dia 4mm / 0.157 inch. Will test it next time on the range too. Did not get one with the exact wire dia of painters FP spring. But close.

.22 lr casing as scale
wire dia 0,31 mm/ 0,012 inch, length 30 mm/ 1,2 inch - FP reetaining plate loosened an FP turned a quarter
wire dia 0,48 mm/ 0,019 inch, original kadet FP spring
wire die 0,40 mm/ 0.0157 inch, length 30 mm/ 1,2 inch - next shoo-in

Offline joerchi69

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Re: light strikes FTF- odyssey of a kadet
« Reply #231 on: June 06, 2021, 09:03:53 AM »
Had have only 100 shots of CCI SV today. Tested the shim. And had no light strikes with the shortened original FP spring with wire dia 0,48 mm/ 0,019 inch length cut down to 24 mm/ 0,94 inch. With the same other configuration as the last months since October 09, 2020 :  the heavier tactical sports hammer, the reduced power 17 lb wolff hammer spring and the optimised FP4. And the slightly lighter trigger spring with wire dia of 0,8mm / 0,0315 inch. The trigger pull wight is estimated around 1,1 Kg / 2,5 lbs .

With the shim i recon a better accuracy then before. The sight picture reproduces more exactly on the paper target. But i have to make more shooting for a summary. With the plastic shim the slide stop sits very tight and so the slide is mostly not getting catched on the last round. With the plastic glued in just on one side in the borehole, i assume the upper pressed in a to high position - so the slide is maybe rubbing a little more in the rails. And i found fresh rubbing marks on the "underside of the rear sights". So a shimming wich is centering the slide release would be the better option.. Starting a apprenticeship at a gunsmith would be a nice option. Wish  ::)

 

anything