Early Mk2 trigger parts

[etiam viviens]

I am missing the locking screw that is placed for the trigger.

Probably hard to find butt does someone know where to get these.
Or if someone can give me some technical data, left/right handed threaded, thread size, diameter of the item and the length

[KevG]

thats a screw in a screw if you know what I mean,outer,one is for travel and the inner for let of tension.outer is m7 0.75 from memory.think inner is m3 or m4.
KevG

[angrybear]

IIRC, that is a hex head screw that contains a smaller hex head screw a spring & a ball bearing,

The large screw is the 2nd stage pressure the bearing simply smooths it out, first stage is the sear spring behind the blade, (corrected)

I'll have to take my trigger apart to measure it, the only way to get parts will be used or make one.

[Ca_Varminter]

I have my old parts in a box somewhere let me do a little searching...
If I can find it.. I will measure it and take a couple of photos..

Stuart

[etiam viviens]

Thanks for all the info.

Does someone know how the 1st and second stage adjusment mechanical should work.
If I look at it the big screw is only used as an locking screw for the smaller one.

[Ca_Varminter]

Here are a few Photos...
Here is the 2nd stage adjustment screw..

Specs..16mm long, thread: 7mm x.75

The internal adjustment screw..with spring
Specs.. 4mm x.70


Btw the ball-bearing drop into the bottom cavity and swaged in!!

[Ca_Varminter]

Here is a Post I made on how to adjust the MKII sporter trigger..
https://rapidforum.co.uk/forum/index.php?topic=275.0

Stuart

[angrybear]

Another pic if it helps, I thought the pitch on the large thread was also .7 rather than .75 but I've only got a cheap thread gauge.
You cannot view this attachment.

[etiam viviens]

It took a while but I have mastered it (I think) only I am missing the big slotted screw that is needed to lock the M7 screw.

Have to get this one somewhere or have it made.

Thanks for all the advice

[Ca_Varminter]

What slotted screw??
That large adjustment screw has a Fine thread, it doesn't move much....
Or use a small drop of loctite or nail-polish


Stuart

[KevG]

Thanks for all the info.

Does someone know how the 1st and second stage adjusment mechanical should work.
If I look at it the big screw is only used as an locking screw for the smaller one.
no the big outer dictates the travel before taking up pressure,the ball bearing is spring loaded and the spring pressure is adjusted via the small inner grub screw.this gives you let of tension.made a few over the years

Thanks for all the info.

Does someone know how the 1st and second stage adjusment mechanical should work.
If I look at it the big screw is only used as an locking screw for the smaller one.

no the big screw dictates the amount of travel before hitting the let of Point.the inner is spring loaded on the ball bearing that dictates release pressure.made a few over the years.
kevG

[KevG]

the mk1 gold medal trigger shares the same part if you go into airgun data section it tells you what the double screw is for and how to adjust.
kevG

[etiam viviens]

What slotted screw??
That large adjustment screw has a Fine thread, it doesn't move much....
Or use a small drop of loctite or nail-polish


Stuart

In my opening post there is an picture that has a slotted round nut that is i assume used to lock the adjusting screw.

I am missing this one butt apperently it is not always present