mcarterbrown.com  

Custom Projects / Custom Questions How do I customize? What do I customize? What do I use? Share you experiences and faults here!

Reply
 
Thread Tools Search this Thread
Old 06-16-2014, 01:28 AM   #1 (permalink)
Pumping a Phantom
 
Join Date: Nov 2013
Location: Pittsburgh

Phoenix Thumper

So I bought a broken Thumper off the nation. I got it for $85 shipped but $2.40 was paypal fees and $17.60 was shipping to me so she qualifies for the Merry Band Tinker's Gauntlet marker cost under $68 total. Here is a link to the fr sale thread...

http://www.pbnation.com/showthread.p...987&highlight=

Quote:
Quote:
Originally Posted by uphillteddy View Post
I've got my thinker for sale.
85$ pp and shipped!
It has thumped problems and doesn't work right now. I don't know how to fix it

I'm a winter tinker and like to have a project for the seasons i can't get out to play. I took her totally apart and I then diagnosed the problems in December 2013...

1) 12 gram bucket adaptor doesn't fit on snug with o-ring
2) Valve cuts o-rings after every 200 or so shots
3) has trigger connection issues with the hammer

Last edited by Christian p; 06-16-2014 at 01:32 AM.
Christian p is offline   Reply With Quote
Old 06-16-2014, 01:29 AM   #2 (permalink)
Pumping a Phantom
 
Join Date: Nov 2013
Location: Pittsburgh

So my thumper had a bottoming out issue where the adaptor between the bucket and the frame where the adaptor I had to take a bit and line up a button where the adaptor nub was stopping and setting into the frame. I took some black highlighter and painted the nub and screwed it on the marker to see where it landed and bottomed out.



I then took a 1/8" drill bit and pressed slightly to make an indent for the nub to set into the frame. I then upgraded the 015 small stock o-ring to a thicker 015 buna o-ring that was in my mini parts kit. The slight indent and thicker o-ring eliminated the slow hiss I had when I got the Thumper. It's suggested by Metadyne to do this but they typically do this service with the updates. However this work was my own doing and looks a little sloppy. Do not do this to your thumper unless you have a slow leak or seating issue with the adaptor and bucket changer and the frame.

It doesn't seat flush and the o-ring has a squish but doesn't tear because of the thickness.



This setup does not leak on a 12 gram but I don't have a 90 gram or remote line test since she is going to be a cartridge 12 gram shooter.

Last edited by Christian p; 06-16-2014 at 10:41 PM.
Christian p is offline   Reply With Quote
Old 06-16-2014, 01:29 AM   #3 (permalink)
Pumping a Phantom
 
Join Date: Nov 2013
Location: Pittsburgh






Don't forget the o-ring on the valve cover.



Make sure the spring is screwed in to an inch in view of the threaded section where the spring screws in.

Last edited by Christian p; 06-26-2014 at 05:59 PM.
Christian p is offline   Reply With Quote
Old 06-16-2014, 01:30 AM   #4 (permalink)
Pumping a Phantom
 
Join Date: Nov 2013
Location: Pittsburgh

6\20/14

So here is the trigger. A mess from spring rub. The return spring was bent. I used a heavy pen spring from a Montblanc pen and a tac nail to hold it straight.



I'll need to find a way to put more pressure on the hammer and hold it in in place on the trigger. Work in progress...

6/23/14

I finally was able to get the hammer to catch the trigger and have the trigger "hold" the striking spring loaded head in place. I had issues with the spring not putting enough tension on the striker to both cock and release. I had to put a slight bend in the spring that can be seen in the picture below.



To test the trigger with the spring and hammer together, I took the striking of the part of the body apart from the valve and attached it alone to the trigger. I was able to take the hammer and slide it in and out to catch and release the striking part of the Thumper. The bent spring was able to add additional resistance, having the striking motion able to hit and push in the valve release pin. The spring was lose enough to allow the striking hammer/spring to retract far enough back to tuck under the trigger as well.



However I have not gotten the assembled Thumper to work properly yet. It's close but not there yet. I did have some dreams of rebuilding the striker mechanism to have a two piece rear push botton system. One would allow a ball to enter the chamber where the other button would release the CO2 and launch the ball. It's a simpler method than the hammer and spring loaded striker system that the Thumper is designed around, but it wouldn't look like a marker or any current design. I'd have to build a grip to go over the bucket changer as a handle to hold.



7/18/14

Since this is a tinker's gauntlet, to toyed with the spring on the trigger and pump. I stayed up way past my bedtime and I didn't even have a beer. It's been while since I pulled out the Thumper. I found a few things...

I changed to tighter tension spring feed on the trigger and used a stock pump spring. I took the spring from a Krazy Glue pen that uses a similar length spring to the stock spring but its so tightly wound that it doesn't need a nail to hold straight.

1) A stronger trigger return spring with stock rear pump spring acts like an auto trigger. As the chamber closes the hammer is released without touching the trigger. Pushing the trigger stops this and it functions normal till you cock the hammer and the hair trigger shoots each pump. Auto trigger is great but it needs an open class feed neck to use this feature. It helps if you cock slow as this is a quiet mechanism if done right.

2) milling out a 5 mm diameter in the trigger plate that plugs into the hammer body section will allow a quick access to the valve. It's held together by 2 screws in the back body, but the trigger has no mid body attachment. It rests on the transfer chamber above the 12 gram bucket.

I'll have a shop day here soon where I'll make the minor mod to have a quick release section to the body.

Last edited by Christian p; 07-19-2014 at 01:25 AM.
Christian p is offline   Reply With Quote
Old 06-16-2014, 10:51 AM   #5 (permalink)
Banned
 
Join Date: Aug 2007

Phoenix thumper? Gonna light it on fire and see if that fixes it?
ApoC_101 is offline   Reply With Quote
Old 06-16-2014, 04:58 PM   #6 (permalink)
Pumping a Phantom
 
Join Date: Nov 2013
Location: Pittsburgh

Quote:
Originally Posted by ApoC_101 View Post
Phoenix thumper? Gonna light it on fire and see if that fixes it?
It's going to be reborn. It's the last Thumper Metadyne put a new valve in since they went silent.

6/23/14

Here is a pic of the setup of the loader system. The stock feed is so heavy, if like to get a open class adapter.



Put together she works well detent finger should face forward not backward.



This section doesn't need much work. Careful to put the thumb paddle in after the first hole to accept the pump rods.

Last edited by Christian p; 06-23-2014 at 10:01 PM.
Christian p is offline   Reply With Quote
Old 06-16-2014, 05:11 PM   #7 (permalink)
MCB Member
 
Spider!'s Avatar
 
Join Date: Dec 2008
Location: Houston, TX

You are a brave soul.

I would say I'm getting out the popcorn, but I can't eat much in the first place.

Good luck! You might try storing it with a chrony nearby to see if that will force it to expose its field personality while it is still at home.
__________________
My Feedback

some things are stickier than others
Spider! is offline   Reply With Quote
Old 06-16-2014, 07:24 PM   #8 (permalink)
MCB Member
 
tjd10684's Avatar
 
Join Date: Jul 2009
Location: Beaver Falls PA (outside Pittsburgh)

That does not typically help. Mine always crapped out only at the field after I got it tuned and velocity adjusted at home.
__________________
My Feedback - http://www.mcarterbrown.com/forums/f...ml#post1575817

A wise man once said:
"The gap between theory and reality is not as far in theory as it is in reality."

http://www.tjdcustomhobbies.com
tjd10684 is offline   Reply With Quote
Old 06-16-2014, 07:33 PM   #9 (permalink)
MCB Member
 
Spider!'s Avatar
 
Join Date: Dec 2008
Location: Houston, TX

Quote:
Originally Posted by tjd10684 View Post
That does not typically help. Mine always crapped out only at the field after I got it tuned and velocity adjusted at home.
Then I'll stick to my first point.
__________________
My Feedback

some things are stickier than others

Last edited by Spider!; 06-16-2014 at 07:39 PM.
Spider! is offline   Reply With Quote
Old 06-16-2014, 07:49 PM   #10 (permalink)
Pumping a Phantom
 
Join Date: Nov 2013
Location: Pittsburgh

Well I'm making some changes in seals, specifically the bucket changer. I'm using hand tools and trying to improve sealing areas but not do to much redesign. I do use two friends tool shops and a shop teacher for machine and cutting advice but most things I'm going off current design.

I did the repair to the bucket changer. I documented that.

Metadyne did the last valve replacement. I have after pics but not before pics.

I still am replacing the springs.

I'd like to do some polishing.

Stay tuned.
Christian p is offline   Reply With Quote
Reply

  mcarterbrown.com » Custom » Custom Projects / Custom Questions

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


All times are GMT -4. The time now is 08:19 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO
© MCB Network LLC