Epee point problem

Epee point problem

Post by Atho » Thu, 28 Apr 1994 01:19:10


Howdy folks,

I began having a problem with my epee point last night.  The
point failed to go off about one in five hits.  I can't
seem to reproduce the problem in any consistent manner.  Everything
seems to be tight (no screws loose, not much play in the barrel).
Could the problem be in the contact spring?  Is it possible that
it is flopping around and failing to make contact when the
plunger is depressed?

Does the new FIE points solve the problem?  I have heard that instead
of a contact spring, they have a solid post.

Happy trails,
-----------------------------------------------------------
Greg Olsen
Department of Forestry, Fisheries and Wildlife
University of Nebraska
Lincoln, NE 68583-0814
Phone: 402-472-9869

-----------------------------------------------------------

 
 
 

Epee point problem

Post by Dick Ki » Fri, 29 Apr 1994 06:00:28

|> Howdy folks,
|>
|> I began having a problem with my epee point last night.  The
|> point failed to go off about one in five hits.  I can't
|> seem to reproduce the problem in any consistent manner.  Everything
|> seems to be tight (no screws loose, not much play in the barrel).
|> Could the problem be in the contact spring?  Is it possible that
|> it is flopping around and failing to make contact when the
|> plunger is depressed?
|>
|> Does the new FIE points solve the problem?  I have heard that instead
|> of a contact spring, they have a solid post.
|>
|> Happy trails,
|> -----------------------------------------------------------
|> Greg Olsen
|> Department of Forestry, Fisheries and Wildlife
|> University of Nebraska
|> Lincoln, NE 68583-0814
|> Phone: 402-472-9869

|> -----------------------------------------------------------

First, rule out problems elsewhere such as the reel or the body cord.

Easiest way to do that is to wield another weapon for a couple of bouts.

Second, be aware that it could be a ground fault.  Some machines have an orange
light that lights when your middle wire is shorted to ground, but many club
machines do not.

Let's discuss the two cases.  I'll assume you have a tester box.  If you dont
you should.  You can do these tests with an ohmmeter but it's frustrating, with
an intermittent fault.

                              No Contact Closure

Is the remaining travel 0.4 mm or closer to 0.05 mm when it does light?  If the
latter, then i would chalk it up to variations in the remaining travel -- when
the remaining travel goes negative you don't get a light at all.  Starting with
a new contact spring, adjust for 0.4 mm remaining travel.  If it's 0.4 this is
not your problem, and if it's 0.7 you are a cheat and the touches you lose are
only just compensation for a too-sensitive point (##)) .

Contact springs seldom come loose but they do get dirty, as do the contacts.
Take the tip apart and dip a cotton swab [eg., Q-tip[tm]] in rubbing ***
and clean the contacts.  Carefully clean the end of the contact spring by
pressing it gently against a fresh ***-soaked swab and rotating it
counterclockwise, so if the swab were a***thread you would be unscrewing
it.

There could be other problems like corrosion in the wrist socket but this is
unlikely to cause an intermittent that goes on and off without unplugging and
replugging.

                                 Ground Fault

These commonly happens in two places.  One is in the barrel and the other is
where the wire goes through the bellguard.  

If it is the former you are hosed, although you can sometimes rescue by finding
a time when it works and dripping some clear nail polish into the groove where
it disappears into the barrels.  I wouldn't even think about wielding a weapon
that had been fixed in this manner as anything but my second or later spare at
any tournament i cared about.

If it is the latter you can often fix it by painting the bare spot with nail
polish and making the spaghetti cover it.  This could be my _first_ spare.

-dk

 
 
 

Epee point problem

Post by Mary Ellen Curti » Sat, 30 Apr 1994 01:59:54



Quote:
>I began having a problem with my epee point last night.  The
>point failed to go off about one in five hits.  I can't
>seem to reproduce the problem in any consistent manner.  Everything
>seems to be tight (no screws loose, not much play in the barrel).
>Could the problem be in the contact spring?  Is it possible that
>it is flopping around and failing to make contact when the
>plunger is depressed?

Did you try it repeatedly with the blade bent in various directions?
If it consistently happens with the blade bent in one orientation, it
might be indicative of one of the following:

   1. Bent or***ed contact spring.

   2. Broken wire -- probably inside the barrel, assuming you've looked
      for breaks along the length of the blade and inside the guard.

   3. A short-circuit to ground -- that is, bare wire making contact
      with the metal of the blade or barrel, probably at or near the tip.

If the problem doesn't seem to be associated with a bend in the blade,
you might check the following:

   1. Contact spring too short, so that only a very firm and complete
      depression of the point makes contact.  You've probably already
      checked this, though.

   2. A short to ground inside the guard.  This may happen right down
      where the wires come through the guard, and can usually be
      corrected just by making sure the plastic insulation on the wires
      is pushed down all the way.

   3. High resistance in your body cord, or a body cord which is broken
      but which makes contact except when flexed a certain way.

   4. Lots of gunk in the tip, possibly combined with high resistance
      in the body cord.

Do you have an ohm-meter?  It really helps in diagnosing epee problems.
You need more than just a continuity tester, so that you can check for
borderline high resistance.  When testing, don't forget to test for
connections between the ground line and each of the other lines -- a
lot of mysterious problems turn out to be short-circuits to ground.

Good luck,

Dirk Goldgar

postal:    9 Titus Mill Rd., Pennington, NJ 08534,  USA

 
 
 

Epee point problem

Post by Grizzly Ada » Tue, 03 May 1994 06:13:48


Quote:


>>I began having a problem with my epee point last night.  The
>>point failed to go off about one in five hits.  I can't
>>seem to reproduce the problem in any consistent manner.  Everything
>>seems to be tight (no screws loose, not much play in the barrel).
>>Could the problem be in the contact spring?  Is it possible that
>>it is flopping around and failing to make contact when the
>>plunger is depressed?

Lots of Diagnostics deleted

Quote:
>   3. High resistance in your body cord, or a body cord which is broken
>      but which makes contact except when flexed a certain way.

I also found that in one of our epees that was weirding out, the aluminum in
the socket in the bell had gotten badly oxidized and it had sufficinetly
increased the resistance that regestering a touch was a real chance event.
Scouring it out really well with a small round file cleaned the problem right
up.

Quote:
>Do you have an ohm-meter?  It really helps in diagnosing epee problems.

I agree.

Quote:
>Good luck,

From me too

Quote:
>Dirk Goldgar

eric

--
------------------------------ Eric H. Anderson -------------------------------

                          |  Iowa State Univ.      |  my opinions are my own,
                          |  Ames, IA 50011        |  and not theirs.