Webley and Scott .25 rebuild with gas piston |
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Billbobnz
Senior Member Joined: 13 Jun 2020 Location: Ashburton Status: Offline Posts: 867 |
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Posted: 27 Jan 2023 at 12:49pm |
Well finally I have this little machined part from the guy down the road. Will see if I can get this gun back together this weekend.
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kruzaroad
Senior Member Joined: 02 Jul 2022 Location: Hastings 4 now Status: Offline Posts: 2283 |
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What is it??
Looks massive for an air rifle |
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Billbobnz
Senior Member Joined: 13 Jun 2020 Location: Ashburton Status: Offline Posts: 867 |
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It is the rear receiver for the gas piston to sit in above the trigger assembly.
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kruzaroad
Senior Member Joined: 02 Jul 2022 Location: Hastings 4 now Status: Offline Posts: 2283 |
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Probly would have helped if I swiped the pic to left and saw the rest. Doh.
So is that same as original or have you redisigned it a bit. Not really a part I would have thought would flog out. What metal you use for new one. |
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Billbobnz
Senior Member Joined: 13 Jun 2020 Location: Ashburton Status: Offline Posts: 867 |
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Here it is with the original. The piston needed to be resessed into the end peice to allow it to be cocked. The piston is about 5mm too long. The original is a cast part and I didn't want to modify that as buy milling alot of material out it may have failed very fast.
Just did a test fit and it needs .5 of a mm taken off in 1 area and it should all be perfect. |
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Billbobnz
Senior Member Joined: 13 Jun 2020 Location: Ashburton Status: Offline Posts: 867 |
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New part is 6061-t6 aluminum I think it's made from.
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kruzaroad
Senior Member Joined: 02 Jul 2022 Location: Hastings 4 now Status: Offline Posts: 2283 |
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https://asm.matweb.com/search/SpecificMaterial.asp?bassnum=ma6061t6
Properties of 6061-t6 aluminum. Looks like a good choice for sure. |
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CuteRabbit
Senior Member Joined: 17 Jan 2023 Location: Albany Auckland Status: Offline Posts: 120 |
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Wonder if it is possible to buy a steel pipe and some bearing ball and a gas-struct on car to 3d print an air rifle so that we can gain an air rifle at somewhere no air rifle sold such as China?
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Squirrel goes Vege
@Crosman Benjamin Ironhide .22 Nitro Piston Elite @Umarex Surgemax .177 Gas Ram 1000fps |
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Billbobnz
Senior Member Joined: 13 Jun 2020 Location: Ashburton Status: Offline Posts: 867 |
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Gas struct on cars are usually got a system that regulates the force for a smooth operation or works at a lower pressure than gas rams.
You can get seamless steam pipe off AliExpress and rifling buttons for forming barrels but you will need a press to push the rifling button through. |
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kruzaroad
Senior Member Joined: 02 Jul 2022 Location: Hastings 4 now Status: Offline Posts: 2283 |
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Don't encourage him, sounds like he wants to start a underground Chinese illegal air rifle ring
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