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Thread: Transfer port

  1. 24-09-2016, 12:15 PM #1
    crowbar
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    Transfer port

    "It's a transfer port Jim but not as we know it"

    My take on a good transfer port is one that gets the air through it as fast as possible.

    So has anybody tried a transfer port with a taper, not with the taper decreasing from the comp tube to the breech
    which will restrict the flow of air but opening out to aid the air flow?
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  2. 24-09-2016, 12:28 PM #2
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    Quote Originally Posted by crowbar View Post
    "It's a transfer port Jim but not as we know it"

    My take on a good transfer port is one that gets the air through it as fast as possible.

    So has anybody tried a transfer port with a taper, not with the taper decreasing from the comp tube to the breech
    which will restrict the flow of air but opening out to aid the air flow?
    Here is a pic of the best TP JMO
    http://imgur.com/jSSbbzD
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  3. 24-09-2016, 12:43 PM #3
    Murphy
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    Quote Originally Posted by Barryg View Post
    Here is a pic of the best TP JMO
    http://imgur.com/jSSbbzD
    Was that photograph taken with a potato?!
    Master Debater
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  4. 24-09-2016, 12:52 PM #4
    lensman57
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    Quote Originally Posted by Murphy View Post
    Was that photograph taken with a potato?!
    Probably through a similar TP on a pin hole camera .

    A.G
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  5. 24-09-2016, 01:00 PM #5
    crowbar
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    My experience is that it would be better without that massive chamfer , replace it with a small polished radius.
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  6. 24-09-2016, 01:57 PM #6
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    read cardew's book
    Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.
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  7. 24-09-2016, 02:45 PM #7
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    Quote Originally Posted by Jon Budd View Post
    read cardew's book
    Have done,from end to end,what a beautiful obsession the brothers had .
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  8. 24-09-2016, 02:58 PM #8
    NickG
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    I have tried a few things the most complex was a take on the convergent divergent nozzle they use in gas turbine engines, I couldn't feel any change over standard, and it didn.t make any more power.
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  9. 24-09-2016, 03:16 PM #9
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    Quote Originally Posted by NickG View Post
    I have tried a few things the most complex was a take on the convergent divergent nozzle they use in gas turbine engines, I couldn't feel any change over standard, and it didn.t make any more power.
    ...until you let loose the afterburner....
    Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.
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  10. 24-09-2016, 04:43 PM #10
    NickG
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    Is that what all the smoke was ?
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  11. 24-09-2016, 05:38 PM #11
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    thisisdonald
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    What happened to the zero transfer port? Nick, we're you not tinkering with that a few months back.. I know bigtoe had a toe in..can't remember who else there was... Anyway.. what was the conclusion?
    Donald
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  12. 24-09-2016, 05:55 PM #12
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    Quote Originally Posted by Murphy View Post
    Was that photograph taken with a potato?!
    LOL I know what you mean, its a picture taken of a picture on a screen but can anyone post pic or diagram that is a better TP
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  13. 24-09-2016, 09:07 PM #13
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    Quote Originally Posted by thisisdonald View Post
    What happened to the zero transfer port? Nick, we're you not tinkering with that a few months back.. I know bigtoe had a toe in..can't remember who else there was... Anyway.. what was the conclusion?
    It was a bit like Nick's afterburner - lots of combustion
    Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.
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  14. 24-09-2016, 10:50 PM #14
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    TonyL
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    Quote Originally Posted by thisisdonald View Post
    What happened to the zero transfer port? Nick, we're you not tinkering with that a few months back.. I know bigtoe had a toe in..can't remember who else there was... Anyway.. what was the conclusion?
    I seem to remember that WonkyDonky had a play.
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  15. 25-09-2016, 06:38 AM #15
    Ratinator
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    Steyr port

    I recently reamed out a black transfer port on a Steyr leaving the exit hole untouched ,it made no difference to power what so ever.
    Set rifle up with standard black port then swapped it for the reamed and polished one, nothing
    I have often wondered if a 77 comp tube would take a Steyr port ?
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