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| Jonny:
Coming on a bit now. Did my first 7 breach blocks with made up long boring bar between centres with vertical slide, what a palava on a Myford took an eternity and still had to sand out the grooves. Milled all the trigger blocks and sears that way. Just doing that required a full rebuild every time, so careful with vertical slides. |
| Nitphoscine:
--- Quote from: Stot on November 03, 2010, 08:38:46 AM ---Ok part 2... First thing to do was prepare the air tubes. You can make these any length you want within reason, but the longer they are, the more air stored, the more shots you get. With the UK limit of 12ft.lbf for an unlicenced airgun, these air tubes at 450mm long should get 70 shots or so in .22. I used aluminium for the air tube hence the thick wall. These will be holding 3000psi+ What grade aluminium are you use for the air tube? So basically the pics below show that I. * chucked up the tube * faced off the end * Measured the bore with some telescoping guages and a micrometer * bored out the tube slightly to the minor size for the thread I was cutting * cut the thread. I use an old 2 flute milling bit as a boring tool. They work really well for this. Repeat 3 more times and give a cursory polish. :thumbup: Cheers Stot --- End quote --- |
| Corvus corax:
--- Quote from: Stot on December 09, 2010, 04:30:10 AM ---I bought plans for a pump gun ages ago. 3 pumps 12ft.lbf But I'd love to try a single stroke up to that power. I would go steel for a pump up as the thinner wall would allow for a larger swept volume in a less bulky rifle. Cheers Stot --- End quote --- Who offers plans for a pump rifle? All the commercial plans I find nowadays seem to be for PCP style rifles. |
| j45on:
--- Quote from: Corvus corax on February 27, 2011, 08:45:44 AM --- --- Quote from: Stot on December 09, 2010, 04:30:10 AM ---I bought plans for a pump gun ages ago. 3 pumps 12ft.lbf But I'd love to try a single stroke up to that power. I would go steel for a pump up as the thinner wall would allow for a larger swept volume in a less bulky rifle. Cheers Stot --- End quote --- Who offers plans for a pump rifle? All the commercial plans I find nowadays seem to be for PCP style rifles. --- End quote --- Is this any good to you ? http://www.john-tom.com/ForSale/ForSale.html#AirRiflePlans This thread seems to have gone cold are you still out there Stot ? |
| Corvus corax:
Thanks that's quite interesting. Anyone else seen these plans? Are they any good? |
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