Hi I am looking to renovate this old BSA Air Sporter

ok so do you have the bolt circled yellow in the pic below?
 

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ChrisHobbs said:
Pretty sure that these holes are your front stock fixing points
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That is as long as there is one both sides 👍
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Hi I just looked at mine that is a pivot pin on the cocking lever and move when you cock the gun it must go Infront of that. The small block Infront of the looks a likely place my be just Infront of the block it looks to have a rebate across it and is bolted up to the under side of the cylinder the cocking lever slides on top of it.
 
Jelleyman said:
ok so do you have the bolt circled yellow in the pic below?
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Yes and the little block and the nut. I looked at the parts ref file and it shows a u shape piece of metal that looks like it might be it.
But no details and not available.
 
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So i have the below that bolts through the cocking lever onto the bolt in the earlier pic.
 

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just realised the item in yellow isn't part of where you are looking its the pin to hold the cocking lever to the trigger mechanism
 

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Jelleyman said:
So i have the below that bolts through the cocking lever onto the bolt in the earlier pic.
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It looks like mine is a bit different the block and tube is all made out of one piece of metal. dose the u shape piece go Infront of that block?
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The front stock screw is a long 2BA screw that passes through the stepped block as shown in red. It clamps the two stock side pieces to the stepped block.
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Roly said:
Hi I bought this old Air Sporter many years ago just as it is in the photos.
I was going to make a new stock for it but never had the time at the time and forgot about it.
I am now retried and still short of time to do it and also thought after looking at it again after years think it deserves an original one.
I don't know but think it is a Mk1 it is marked GA3851 and has no scope rail grooves.
I am looking for advice on where I can get spares to do the job.
Any help would be great thanks in advance.
Roly.View attachment 880111View attachment 880112View attachment 880113
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Rifle of my dreams at 16, 1976 but I could only afford a meteor 🥲
 
spartan said:
The SN is GC716
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Thanks what year dose that relate to?
I have taken mine apart now and I am cleaning up the bits. I had a problem with the sear not engaging but I sorted that but the trigger release is playing up with out the stock on and using just the piston rod with the catch on the end. It engages well but when I pull the trigger it moves off the sear and is not in contact with the release block but the release block does not drop until I let go of the trigger. It is all clean and free moving the only thing I can think of is the trigger spring not doing it's job properly. As soon as I let go of the trigger it releases.
Have you or anybody got any idea as what is going on?
 
An up date having fiddle about trying to work out why the trigger was only firing when I let the pressure off the trigger.
The trigger spring came of its seat in the trigger its self and move back in the housing.
The trigger then worked and released as it should. but the trigger had no tension on it from the spring so it looked like the spring was to strong but taking some tension out of it didn't work ether nor did increasing the pressure.
So it appeared that the spring needed to be bent to allow for the push to be moved back a bit.
So I bent the loop that sits on the trigger back on itself this moved the pressure back a bit and it works like a dream now.
I have just ordered a new Main spring and leather piston washer for it.
If it all works well then I will make a stock for it that should be fun and a test of my skills.
Roly
 
Another up date two photos of the trigger spring alteration I made.
I turned downwards the bottom of the trigger spring to make it work with it like that the spring can't jump of the groove in the trigger.
When I was taking it all apart the screw guide that holds threaded block onto the trigger unit came undone.
That was a bit of a pain as it has a very fine indexing system that allows you adjust it so when you tighten it up it is all lines up.
I didn't know that came off with a bit of measuring and then little bit of fine adjusting I got there.
It all goes back together well now it is quite a learning curve but I love all of that side of the job.
The roughly cut stock had split over the years it had been sitting around so I found another piece to make that out of.
First photo with the trigger set and the second with it fired.

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bobdacrazyman said:
they can be a little finicky to get the rear on/off but its worth doing to sort the piston, have to use a hammer on my mk6 for it to cooperate lol
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Thanks for that.
I took mine apart it was no trouble at all it was all quite loose I think some one had had a go at it before me twenty years ago or more.
I am slowly getting my head around how it all works.
This is an odd ball one the trigger doesn't relate to any of the drawing for a Mk1 or Mk2,
but parts are shown in catalogues, but not exactly the same the trigger and sears are different.
I am having fun doing it so that's good. I bought my first one in 1974 it cost me £20 brand new and I still have it. Roly
 
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