easy breech & transfer port leak test

[plinker99]

  here's an easy way to test for leaks in the breech area.  it can test for leaks in the bolt seal & transfer port seal & alignment.  it can also give you an idea on how good the probe is seating the pellet.

  1) get a piece  of 1/4" plastic tubing, the one for a refrigerator ice maker.
  2) heat till slightly soft, then pull to stretch it.  what you're looking for is the tube forming a cone that will fit into the barrel.  then trim the excess.
  3) insert the cone into the end of the barrel  & blow into the tube.  with a good seal, no air should be leaking from the breech area.
      load a pellet & unlock the bolt.  blow into the tube & this will give you an idea of the pellet seating.  air leaking...bad.  no air leaking..good.


i tried this on my new 2100b & it leaks big time.  well another project.....
   

[Crosshairs]

Not a bad idea. 

[breakfastchef]

Interesting concept,99. Baby powder or flour is quicker for me.

[Brent]

That is actually a good idea. 
Can learn a couple of things there 
Now to find some tubing.

[quickster47 †]

Nifty idea. Not as messy as the powders but how affective?

Carl

[plinker99]

  i figured this test will catch the obvious leaks.  the powder or flour can catch the high pressure leaks.

an example....
on my 1377 with the stock bolt--
  bolt locked no pellet, no air leaking.
  bolt lock with pellet, no air leaking.
  bolt not locket after seating pellet,  plenty leaking.  on closer examination through the breech, i see that the pellet is only half way past the transfer port.   oh well another thing to mod,  a bolt with a longer probe.

[rewinder]

great idea!

[quickster47 †]

oh well another thing to mod,  a bolt with a longer probe.

Now you are catching on to why the to-do list just keeps getting longer and longer. 

Carl