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Thread: FWB 127 trigger block repair

  1. 24-01-2019, 09:25 AM #1
    deejayuu
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    FWB 127 trigger block repair

    No gunsmith as you see but patched two of these this week.
    Stock lug threads stripped.

    Drilled and tapped M10

    M10 stud to make a socket

    M8 x 1 socket thread locked and punched to secure 'cos don't have LH M10 tap

    Damaged end face from sharp spring ends
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  2. 24-01-2019, 02:34 PM #2
    les allam
    les allam is online now Registered Gent'
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    I had the stock retaining bolt snap off on. My 127, I have never drilled any thing as hard as that bolt.
    Lee..
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  3. 24-01-2019, 02:46 PM #3
    deejayuu
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    Ha, ha, Les. This one was sheared in the lug too. As you say took a bit of patience but OK now.
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  4. 24-01-2019, 04:26 PM #4
    Vernal
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    This looks like a very useful post which I hope I never need to use!
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  5. 24-01-2019, 08:11 PM #5
    scorpiont10
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    Lucky

    10mm thread has a min thread dia of 8.16 typically - you were very lucky to get away with this.
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  6. 24-01-2019, 10:02 PM #6
    Shed tuner's Avatar
    Shed tuner
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    Quote Originally Posted by scorpiont10 View Post
    10mm thread has a min thread dia of 8.16 typically - you were very lucky to get away with this.
    yeah, i was thinking it's a bit tight...
    Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.
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  7. 24-01-2019, 10:06 PM #7
    deejayuu
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    Although pleased I'm among the luckiest on the planet I did the first one M12
    Then thought try M10 'cos can always go up!
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  8. 25-01-2019, 05:57 PM #8
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    Shed tuner
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    Quote Originally Posted by deejayuu View Post
    Although pleased I'm among the luckiest on the planet I did the first one M12
    Then thought try M10 'cos can always go up!
    M12 much better idea !
    Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.
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  9. 25-01-2019, 07:07 PM #9
    Phil Russell
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    Fascinating ... thank you. Would / could one of those thread repair thingies have done the job? Helicoil or relative?
    Cheers, Phil
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  10. 25-01-2019, 07:31 PM #10
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    Shed tuner
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    Quote Originally Posted by Phil Russell View Post
    Fascinating ... thank you. Would / could one of those thread repair thingies have done the job? Helicoil or relative?
    Cheers, Phil
    I've helicoiled a TX block before. It actually feels much better to do up, with a definite stop, rather than the sponginess you get with ali...
    Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.
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  11. 25-01-2019, 08:29 PM #11
    bighit
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    Quote Originally Posted by Phil Russell View Post
    Fascinating ... thank you. Would / could one of those thread repair thingies have done the job? Helicoil or relative?
    Cheers, Phil
    We used to use wurth timserts in the engine place I worked .you could fit then inside each other too if you wanted to use the correct size bolts.

    say you drilled the hole too big ,you could put one in the size you drilled then the smaller one inside that if you get my drift.

    We used that a few times when some one had drilled a broken bolt out and went off entre. e set it up in the drill press and drilled a bigger hole to fix the mis drilled original hole then put an insert in then the correct size insert inside that to take it back to the right size thread . mostly on manifold threads .

    Like this pic but imagine the bottom bit is another Timesert insert and the insert is going inside it.
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  12. 25-01-2019, 10:22 PM #12
    deejayuu
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    Quote Originally Posted by Phil Russell View Post
    Fascinating ... thank you. Would / could one of those thread repair thingies have done the job? Helicoil or relative?
    Cheers, Phil
    Certainly Doc. but not for nowt
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