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TK Firestarter firing pin

This is a discussion on TK Firestarter firing pin within the Ruger Rimfires forums, part of the Pistol & Revolver Forum category; Originally Posted by Goldenpony I'm kind of puzzled by all these flaming feedbacks... So any feedback that's not "you made a great purchase!" is "flaming"? ...


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Old April 23rd, 2017, 06:01 AM   #16
 
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Originally Posted by Goldenpony View Post
I'm kind of puzzled by all these flaming feedbacks...
So any feedback that's not "you made a great purchase!" is "flaming"?

I sure didn't interpret anybody's post as flaming either you, or Tandemkross.

Also, I really don't need to "try the Fire Starter firing pin" to understand the physics behind it. I'm sorry if you don't respect the laws of physics (or other's "unsupportive" opinions).

Out of curiosity, I did the math...

Take 2 firing pins with all things (friction, etc.) being equal, except one weighs 40% less than the other. If the same amount of kinetic energy is applied to both (a reasonable assumption when installed in the same gun), the lighter pin will have an average velocity 29.1% higher than the heavier one. But it will also have 22.54% less momentum.

The TK firing pin is better than the Ruger pin (IMO) in having a narrower striking surface and a better finish. But as far as it being better because it's lighter? That depends on the goal. If the goal is to reduce lock time, then yes - it's an "upgrade". If the goal is to get deeper, more reliable ignition strikes, then it's a "waste of money".

Yes, it's your money to spend. So buy what you want and be happy!!!



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Old April 23rd, 2017, 09:02 AM   #17
 
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Out of curiosity, I did the math...

Take 2 firing pins with all things (friction, etc.) being equal, except one weighs 40% less than the other. If the same amount of kinetic energy is applied to both (a reasonable assumption when installed in the same gun), the lighter pin will have an average velocity 29.1% higher than the heavier one. But it will also have 22.54% less momentum.


And by the math, bumble bees can't fly
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Old April 23rd, 2017, 09:13 AM   #18
 
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Originally Posted by Gold<script id="gpt-impl-0.3151972635797179" src="https://securepubads.g.doubleclick.net/gpt/pubads_impl_114.js"></script>enpony View Post
Anybody tried the TK Firestarter firing pin for MK pistols? I watched the video and it seemed like a decent upgrade so I ordered one.
Afternoon Goldenpony

What made it seem like decent upgrade to you?

Or put anther way, what are you tryin to improve with the Firestarter firing pin that the stock firing pin isn't now doing?

I haven't done much firing pin swapping or playing on the .22 pistols but sure have on the .22 revolvers. On the .22 revolvers getting a light double action pull & 100% ignition is a real challenge so improvements or non-improvements in the firing system really show up.

Firing pin weight should have an effect on ignition as lighter pins usually travel faster than heavier pins so the speed increase should trump the mass decrease but I haven't found that to be true on the .22's that I have worked on due to the hammers being the predominate mass in the firing system.

Due to the hammer mass in the Mark pistols being SO much more than either a light or heavy firing pin I would presume the same applies with that system as with the revolvers (so if you are looking for faster lock times then lighten the hammer as that is BY FAR the predominant factor in the Mark guns).

Also, unlike the center fire guns I haven't found longer forward firing pin travel to help the .22 guns as long as the factory firing pin travels far enough to produce a good rim divot.

What I have found (in revolvers anyhow) is a longer firing pin travel can really put a nick in the rear of the chamber if the gun is ever dry fired, either on purpose or by accident. (again, I can't see this being different on the Mark guns)

I have found the firing pin shape at the rim contact area can have an effect on ignition but it doesn't always follow logic so in some cases narrower & more concentrated doesn't always translate to better or more positive ignition.

What I have found is that the shape of the rear of firing pin (where it contacts the hammer) can have an effect on consistent ignition (at least in revolvers) as (my guess is) it allows more hammer energy to be transferred to the firing pin.

A lot depends on how long a particular firing pin says on the hammer or how quickly it jumps out away from the hammer hit & how far the firing pin actually travels before hitting the case rim.

Most think "firing pin" but the hammer & firing pin must be thought of together as far as mass & speed goes as the hammer is major mass but the pin must then transfer as much of that energy to the case rim as possible.
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Old April 23rd, 2017, 09:50 AM   #19
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Lots of theory .... and that's OK but as they say .... "the proof is in the pudding". Try this simple experiment: fire a few rounds using the factory firing pin. Recover the brass and secure it. Remove and replace the firing pin with a TK Fire Starter, then fire a few more rounds. Recover the spent cases and compare them .... TK Fire Starter versus factory firing pin. The firing pin that caused the deepest dents wins. End of experiment.
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Old April 23rd, 2017, 11:36 AM   #20
 
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Originally Posted by Iowegan View Post
Lots of theory .... and that's OK but as they say .... "the proof is in the pudding". Try this simple experiment: fire a few rounds using the factory firing pin. Recover the brass and secure it. Remove and replace the firing pin with a TK Fire Starter, then fire a few more rounds. Recover the spent cases and compare them .... TK Fire Starter versus factory firing pin. The firing pin that caused the deepest dents wins. End of experiment.
Thanks for the advice. I had already mentioned in an earlier post I was going to do that exact experiment.
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Old April 23rd, 2017, 01:46 PM   #21
 
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Quote:
Originally Posted by Goldenpony View Post
Out of curiosity, I did the math...

Take 2 firing pins with all things (friction, etc.) being equal, except one weighs 40% less than the other. If the same amount of kinetic energy is applied to both (a reasonable assumption when installed in the same gun), the lighter pin will have an average velocity 29.1% higher than the heavier one. But it will also have 22.54% less momentum.


And by the math, bumble bees can't fly
Not true. Just need to apply the correct physics and math.

Bumblebee argument - RationalWiki
Bumblebee Flight Does Not Violate the Laws of Physics
Bumblebees Can't Fly

Also, IMO, the previous post detailing the math is essentially correct. The total energy stored in the mainspring ( as spring potential energy ) is, under the given assumptions, converted to kinetic energy and essentially imparted to the firing pin. Application of the kinetic energy equation, with the value of th k.e. held constant, will yield the velocity ratios indicated in that post. The results are as then indicated - the lighter pin will have increased velocity but will also have less momentum.
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Old April 23rd, 2017, 05:12 PM   #22
 
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You know what, I really don't care any more.
If I'm not happy with it, it will go back.
Peace out.
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Old April 24th, 2017, 03:47 AM   #23
 
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Originally Posted by Goldenpony View Post
You know what, I really don't care any more.
If I'm not happy with it, it will go back.
Peace out.
You haven't told us yet about what problem you are trying to cure? What is (or isn't) the OEM firing pin doing that it needs to be replaced?

We can understand that if you aren't happy with it that you can send it back (you have stated that a couple of times) .

It seems that the bragging rights are not what you expected from some of the replies here so that leaves the meat & potatoes of actual performance.

With the bragging rights seemingly off the table exactly what does this thing need to do to make you happy?
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Old April 24th, 2017, 03:57 PM   #24
 
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Last post on this subject.
Received the Fire Starter firing pin. Ran 5 rounds of Aguila Super Extra and saved the brass using the OE factory pin.
Installed the Fire Starter and repeated the test using the same ammo.
Compared the strike marks on the cases and they were indistinguishable.
I am satisfied. And yes, they all went bang.
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Old April 24th, 2017, 04:10 PM   #25
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Good news, GP!

Now, what else did you learn? LOL
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Old April 24th, 2017, 06:48 PM   #26
 
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Good news, GP!

Now, what else did you learn? LOL

Well, I guess I learned to keep quiet.
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Old April 25th, 2017, 04:59 AM   #27
 
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If the OP's Mark pistol is the Mark IV with their new firing pin, the firing pin hits should be very distinguishable. Unless they've made very recent changes to the Firestarter firing pin, the new Ruger OEM firing pin imprint should be longer, narrower and deeper than the Firestarter. There wasn't much difference between the Firestarter pin imprint and my original Mark I firing pin, except the Firestarter imprint was even shallower than even my 37 year old firing pin. The Firestarter did go bang for the 20-30 shots I fired with it, but with such a shallow imprint, I could foresee problems down the road.

I'm curious and would love to see pics of the firing pin imprints he's getting with his Firestarter. I recently saw pics posted on another forum showing fired cases from the new Ruger firing pin and a Firestarter and the results were identical to mine. They can be seen in the link below.

Mark IV 22/45 LITE firing pin - RimfireCentral.com Forums
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Old April 25th, 2017, 07:05 PM   #28
 
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I'm done
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