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Male threads sheared off inside cross- Fixed
Posted: Mon Oct 25, 2010 2:54 pm
by saefroch
The title says it all... I was tightening on the barrel getting ready to film a shot at 1,000psi when this happened. Yeah...
Buying another cross isn't an option I'm eager to consider. Suggestions welcomed.
Posted: Mon Oct 25, 2010 3:09 pm
by velocity3x
You can remove the broken piece with an easy-out made for pipe. You can get them at a plumbing supply....usually.
Posted: Mon Oct 25, 2010 3:29 pm
by metalmeltr
What is wrong with buying a new cross?
Internal pipe wrench will take out the broken pipe.
http://www.homedepot.com/Building-Mater ... 0053#specs
Posted: Mon Oct 25, 2010 4:26 pm
by saefroch
Thank you for the suggestions. I'd much rather avoid buying a new cross since I'd have to order one and that would delay work even farther. I thought I'd finally be able to video something of good quality today... so I'm impatient.
Posted: Mon Oct 25, 2010 5:02 pm
by jrrdw
A good sharp chisel and hammer will walk that busted fitting right out of there...
Posted: Mon Oct 25, 2010 6:24 pm
by saefroch
Problem solved. Thanks jrrdw. Method inspired by your suggestion, though brass is too soft for the chisel method.
Just sharing for future reference. Hammered in the drill bit, then placed the pliers around the drill bit and against the cross, then tried to twist it, and voilà!
Posted: Mon Oct 25, 2010 6:42 pm
by Gun Freak
Good idea! Did you do that shot yet? I bet it will be awsome
Posted: Mon Oct 25, 2010 6:44 pm
by saefroch
"that shot"? I shot at 900psi and at 1,000psi, no vids yet. Danged loud though.
Re: Male threads sheared off inside cross- Help?
Posted: Mon Oct 25, 2010 6:46 pm
by Gun Freak
saefroch wrote:I was tightening on the barrel getting ready to film a shot at 1,000psi when this happened. Yeah...
I assumed you haden't done it yet because you were confronted with this problem. How do you get that pressure?
Posted: Mon Oct 25, 2010 9:52 pm
by saefroch
By jumping up a little and pushing down on the pump.
Why does nobody expect that I can and do or think it's impossible to apply more force than your weight to an object???????
Posted: Tue Oct 26, 2010 12:36 am
by jackssmirkingrevenge
saefroch wrote:Why does nobody expect that I can and do or think it's impossible to apply more force than your weight to an object???????
Not recommended for health reasons.
[b][url=http://www.airgunwriter.com/antique-pumps.html]Tom Gaylord[/url][/b] wrote:Then, on a suggestion from one of his airgunning friends, he tried "rapping" the air into the reservoir - similar to the method used with the Korean-built Yewah Triple B Dynamite shotgun. Rapping means imparting extra momentum to the pump through inertia. With this method, Dennis raised the pressure ceiling of the 5/8" plain piston pump to about 810 psi, but at a high cost to his personal well-being. He said his wrists hurt so much from doing the rapping just once that he had to recuperate for several days thereafter. So rapping, while possible, is not a practical way to fill vintage reservoirs to higher pressures, and it's doubtful that anyone ever did it more than once.
Posted: Tue Oct 26, 2010 1:28 am
by Technician1002
The bigger hazzard is when a cheap plastic handle fails while the excessive force is applied. It is a good way to get a trip to the hospital.
http://www.spudfiles.com/forums/to-all- ... 18495.html
Posted: Tue Oct 26, 2010 1:32 am
by jackssmirkingrevenge
Technician1002 wrote:The bigger hazzard is when a cheap plastic handle fails while the excessive force is applied. It is a good way to get a trip to the hospital.
Not as effective as
having a check valve fail on you though
Posted: Tue Oct 26, 2010 6:49 am
by saefroch
jackssmirkingrevenge wrote:rapping, while possible, is not a practical way to fill vintage reservoirs to higher pressures, and it's doubtful that anyone ever did it more than once.
Uhhhh yeah I've done it about 100 times at least, and since I am not suffering any ill effects...
I would say Tom Gaylord is somewhat unqualified to be writing about such.
Technician1002 wrote:The bigger hazzard is when a cheap plastic handle fails while the excessive force is applied. It is a good way to get a trip to the hospital.
Mine happens to 1" steel bar stock.
And... I've only pushed my check valve 200psi past it's 1,000psi pressure rating. There's a reason I went with a commercial check valve for high pressures.
Posted: Tue Oct 26, 2010 6:54 am
by jackssmirkingrevenge
saefroch wrote:I would say Tom Gaylord is somewhat unqualified to be writing about such.
In spite of his uninspiring family name *chuckle* he's actually
quite an authority on the subject.