Hammer fix
Lately I’ve noticed with 25 Vulcan the 40-50 and beyond yard shots where not slam dunk anymore. Well this morning after a horrendous outing I figured I’d better look into it.
I whipped out chronograph and viola the answer was clear. First it was shooting 880-990 to start off with. Last time I checked it was 930 or so. So I took your the hammer screw and was able to move velocity around but not consistent at all. Extreme spread was 25 and then some. My 80 yard groups showed it too. So I took it apart but had to reverse drill out two of the screws holding the side plate. (thanks Zonk for the 2 spares you sent me) I took hammer out and wiped it clean. Then I noticed the one end where trigger catches hammer was sharp. So I smoothed out the edges using a drill to spin hammer and taking some cloth to the edge. 
While I had it apart I figured I might try to do something with hammer spring too
I put it to the test through chrony and settled for 920 with es of 2 with 20 shots tethered to my tank. Major improvement to say the least.
I went and did a accuracy test and it puts 3 pellets through a hole not much bigger than the pellet at 50 yards.
I’m so happy to have my Vulcan back to its usual self.
The piece on the spring is a rubber grommet that you use to insulate a hole to pull wires through. I can’t hear the spring at all. Problem is my gun got louder. Lol
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They have Streets in Finland?
:rofl: :rofl: :rofl: Good one Hoot: !
Ignorant Dolt!
Even I know that would be a “Peeker”….
Hoot:
:hoot:
Ignorant Dolt!
Even I know that would be a “Peeker”….
Hoot:
It’s Finnish street slang and mean tiny Pecker.
:hoot:
Duh….what’s a “peek”?
Hoot:
I’m looking into something like that
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Have you guys considered peek inserts for the hammer nose? I and another fella at BSAOG modified our BSA hammers and those guns sound now like they were firing on empty cylinders, much less mechanical noise.
Of course they do ! War is Gods way of teaching Americans geography – or so they say 🙂
I am one of those who cant travel to the middle east.
…you Americans don’t travel much these days do you
ehehe :rofl:
GROMMET SIZE SHOULD READ 3/8″ not 5/8 😳
I thought I had corrected it but must have hit preview instead of submit
:hoot:
Dude….
I don’t want to be invasive…but, what is that bright light behind your head in your forum photo???
From your beard and long hair…I figured you were from Europe somewhere, but that light throws me!
Hoot:
He’s our personal Jesus.
The reason I asked eelect about Silicone is the NEW Grommets I got are different from what I had used in the past. These new one may be made synthetically as they are softer and shinny.
OH SHIT…good thing you asked…IT MOVED ❗
There is room for more but they do slow down the Spring on mine at least. I had the whole area sprayed with Silicone some time ago but cleaned it out in favor of polishing the hammer.
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I finally got some 5/8″ (9.5mm) Grommets :8:
Way to go eelect
Damned if it don’t work ❗ ❗
Of course I have further comments and questions though.
1) Did you put Silicone on the Grommet or Hammer Spring ❓
2) Did you try moving it to different positions ❓
3) Does it stay put wherever you positioned it ❓
4) Did you have to screw in the HST adjustment further than before to get your required FPS ❓
5) Was the twang all gone before you put the side plate back on ❓
Excuse all my questions as this really works and I want to make sure I get full advantage of it.
My preliminary findings are:
Grommet all the way forward did reduce the twang but not completely for me. Probably 98%.
Gradually moving it to the rear got a little better but then worse until I got it all the way back. But cocking actually moved it forwards a little. That’s partly why I ask about using Silicone.
I think the rear most position quieted mine the most. And it ends up separating the cocking lever spring from the hammer spring. Oh, I had already positioned an A008 o-ring in the middle/ center to the cocking lever spring like you also suggested.
My HST is about 1 turn further in to get nar my previous FPS.
I haven’t put the side plate back on yet as I want to observe if the grommet moves as I do further testing.
So, what do you think about a spritz of Silicone on the grommet:?:
As I said in my first post grommet is so tight around spring that I have to screw grommet onto spring if you know what I mean. I have mine in the front next to hammer side. When I did the installation I tuned gun over the chrony and over 4 clips it didn’t move. I probably need 250 rounds through it since I modded it and have not found it to have a negative effect on the gun. I have not checked to see if grommet has moved across town or anything yet. My suggestion is do not put anything in or on the spring as far as silicone or any other glue to hold grommet in place. It will fail.
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lurker it will rain in there if you leave it like that.
💡 Thanks for the idea. I may be the first to have a plastic window on a Vulcan so I can show what work I did inside 
A little rough but I’ll look for some thicker plastic tomorrow.
:hoot:
Dude….
I don’t want to be invasive…but, what is that bright light behind your head in your forum photo???
From your beard and long hair…I figured you were from Europe somewhere, but that light throws me!
Hoot:
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No. We need no stinking streets – people fly around in their UFO’S.
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