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how to fix the rotation?

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#1 AssassinNF

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Posted 10 June 2009 - 10:50 PM

Summer = More free time than usual

Today I looked in my box of spare parts:
Posted Image

And made this entirely from parts I found:
Posted Image
Posted Image

It's a Maverick with an AT3K tank instead of a plunger tube, and a greatly increased seal.

Internals:
Posted Image
Posted Image

And here's a shitty video from my shitty camera, in case anyone want's to see how it works.
link
One of those shots was a misfire, due to the turret not rotating correctly.

I used some polycarb to increase the seal between the tank and the turret, and the result was 50'+ ranges, with a side-effect of severe rotation problems. I have reinforced the rotating mech in the usual ways - glueing the teeth together, adding springs to the trigger, etc, but it still has problems. It rotates fine on the pull of the trigger, but doesn't on the return, and the trigger doesn't want to return all the way. Anyone got any suggestions on how to fix this? I almost have to manually rotate the turret after firing each time.

Edited by AssassinNF, 10 June 2009 - 10:53 PM.

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Probably dead by now, or something.


#2 wingd man

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Posted 10 June 2009 - 11:16 PM

Simple; add more trigger springs and, if you haven't already, glue the two jagged parts of the turret together.
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#3 AssassinNF

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Posted 10 June 2009 - 11:26 PM

Simple; add more trigger springs and, if you haven't already, glue the two jagged parts of the turret together.

I have reinforced the rotating mech in the usual ways - glueing the teeth together, adding springs to the trigger, etc, but it still has problems.

If you would've read the post, you would've seen that I've already done both of those!

And the trigger currently has 2 extra springs on it that weren't in the internals pic.
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Probably dead by now, or something.


#4 umpshaplapa

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Posted 10 June 2009 - 11:32 PM

Simple; add more trigger springs and, if you haven't already, glue the two jagged parts of the turret together.

I have reinforced the rotating mech in the usual ways - glueing the teeth together, adding springs to the trigger, etc, but it still has problems.

If you would've read the post, you would've seen that I've already done both of those!

And the trigger currently has 2 extra springs on it that weren't in the internals pic.

Ace has some really strong springs that are small enough to work. And I mean STRONG.
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#5 SchizophrenicMC

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Posted 11 June 2009 - 12:27 AM

I don't know what to say other than what's been said about reinforcing the mechanism, already.

By the by, I see you appear to have liked The Unsung War.
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#6 white moonlight

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Posted 11 June 2009 - 06:11 AM

This is cool considering you just pulled some stuff out of a bin of guns.

I don't know why you are having rotation problems if you've done what you said you did though.
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#7 nerkum

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Posted 11 June 2009 - 07:46 AM

I had to use three rubber bands on my triggers to get the cylinder to rotate after improving the seal. So even though it will make the trigger pull really stiff, add a stronger spring or rubber bands to it. Otherwise just put a keyring on the trigger so that your finger and cause the manual rotation instead of relying on a spring.
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#8 Shrub

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Posted 11 June 2009 - 08:34 AM

I don't think this is the problem but your using a New gen turret in an old gen Mav. But nice work otherwise.
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#9 pjotrkuh

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Posted 11 June 2009 - 08:45 AM

Nice work!

For the rotation issue:

Have you got some small but strong springs lying around?
(like the one used in the clip on the underside of the Titan, to attach the Hornet)

On the back part of the trigger there's a notch where you can mount a spring,
hot glue a piece of plastic on the handle insides,
put the spring in between the plastic and the trigger and your done

Edited by pjotrkuh, 11 June 2009 - 08:46 AM.

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#10 Mr BadWrench

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Posted 11 June 2009 - 10:21 AM

how well does your turret open and close? will it just snap shot with a flick of the wrist? becasue if your turret to chamber seal is too tight for the turret to easily snap into place then its too tight for the turret to spin.


also have you misaligned your turret enough while modifying it to cause your hex shaped rotation piece to not lign up properly?


the last issue is that I see you do not have a spring on your firing pin.... you could be limiting your trigger travel to the point whre it keeps the rotation from completing.

BTW your blaster looks quite threatening, I hope you do not plan to take it to a war looking like that.

Don
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#11 AssassinNF

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Posted 11 June 2009 - 03:13 PM

Simple; add more trigger springs and, if you haven't already, glue the two jagged parts of the turret together.

I have reinforced the rotating mech in the usual ways - glueing the teeth together, adding springs to the trigger, etc, but it still has problems.

If you would've read the post, you would've seen that I've already done both of those!

And the trigger currently has 2 extra springs on it that weren't in the internals pic.

Ace has some really strong springs that are small enough to work. And I mean STRONG.

I'm using a couple... -_-

I don't know what to say other than what's been said about reinforcing the mechanism, already.

By the by, I see you appear to have liked The Unsung War.

Haha, that's become my user name on a LOT of sites. Not alot of people get the refferrence, though.

This is cool considering you just pulled some stuff out of a bin of guns.

I don't know why you are having rotation problems if you've done what you said you did though.

Yep, it's like Frankenstein. A bunch of body parts sewn together.

I had to use three rubber bands on my triggers to get the cylinder to rotate after improving the seal. So even though it will make the trigger pull really stiff, add a stronger spring or rubber bands to it. Otherwise just put a keyring on the trigger so that your finger and cause the manual rotation instead of relying on a spring.

I guess I just need to try stronger and stronger springs.

I'm thinking of putting a keyring/piece of CPVC on the trigger. That would definitely fix it, but it's like putting a bandaid on a blinking oil light rather than changing the oil.

I don't think this is the problem but your using a New gen turret in an old gen Mav. But nice work otherwise.

The new gen turret seems to fit fine in the case, but I'll take another look to make sure.

Nice work!

For the rotation issue:

Have you got some small but strong springs lying around?
(like the one used in the clip on the underside of the Titan, to attach the Hornet)

On the back part of the trigger there's a notch where you can mount a spring,
hot glue a piece of plastic on the handle insides,
put the spring in between the plastic and the trigger and your done

I have a couple of those springs, but they are ridiculously strong. It made the trigger pull impossible when I added one.

It's not in the picture, but I added a spring there, too.

how well does your turret open and close? will it just snap shot with a flick of the wrist? becasue if your turret to chamber seal is too tight for the turret to easily snap into place then its too tight for the turret to spin.


also have you misaligned your turret enough while modifying it to cause your hex shaped rotation piece to not lign up properly?


the last issue is that I see you do not have a spring on your firing pin.... you could be limiting your trigger travel to the point whre it keeps the rotation from completing.

BTW your blaster looks quite threatening, I hope you do not plan to take it to a war looking like that.

Don


The turret is difficult to open and close. I should probably sand the Polycarb piece down further, to try to give it a little more room.

The turret is aligned properly, though. The hex piece lines up fine.

The trigger has full motion. I made it so the AT3K is fired at the very end of the pull. And the rotation works fine on the pull back, but not on the return.

I know you're a black-guns Nazi, but I think the orange on this one could be seen from space. :P If I ever come to a war you host, I will gladly put a giant pink bow on it if it would make you feel better.



Ok, looks like I need to sand down the Polycarb some more, put even stronger springs on the trigger, and if all else fails, Key-ring the trigger.
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Probably dead by now, or something.



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