Ron Kosakowski's


The PSDTC Was Established in 1988

An education in martial science as well as martial art!

A literal university of many martial art styles right here in Waterbury!


Click here to see information on Inosanto Kali and Pekiti Tirsia Kali Click here to see information on Inosanto Kali and Pekiti Tirsia Kali Cick here to see information on Kun Tao Dumpag Click here to see information on Jun Fan Gung Fu/ Jeet Kune Do, Mixed Martial arts, MMA fighting, Muay Thai Click here to see a blend of Brazilian Jiu Jitsu, Russian Sombo, Shoot Wrestling, Judo, Kuntao, Silat adn Dumog for just grappling, Mixed Martial Arts, MMA fighting or self defense purposes
Inosanto Kali

Pekiti Tirsia Kali

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Jeet Kune Do
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Kali, Arnis, Eskrima

847 Hamilton Ave (Rt 69).
Waterbury, CT 06706
203-596-9073 or 203-802-8533


The influence of our Kali, Arnis and Escrima is from Guro Dan Inosanto, Larry Hartsell, and the late Guro Edgar Sulite

A fighting method of the Philippines considered by many to be one of the most deadly combat systems in the world. Kali is the name used for this ancient indigenous martial arts of the Philippines, some say coming from the word Kalis (also known in different parts of the Philippines as Arnis (also spelled Arnes), Eskrima (also spelled Escrima).  Others say it comes from "Kali" the India god of destruction going back into ancient times.

Kali, weapon training, which is commonly done with rattan sticks for practice along with bladed weapons such as various types of swords and knife fighting (as well as variety of other weapons) are taught usually before empty hand fighting is practiced.

Ron demonstrating a Kali disarm.Empty hand fighting known as Panantukin (commonly thought of as the "boxing Aspects" of Kali) consists of head-butting, open hand, elbows, ulna bone strikes, with joint destructions, joint manipulations, nerve destructions, trapping and low line kicks from Pananjakman.

In Kali, there are also a very good empty hand blade defenses as well as takedowns and and ground work from Dumog (a subsystem of Kalithe grappling range, which is very destructive using bites, pinching and weapons) which makes this style very good for self defense purposes for the average person.  Kali is a complete system making the most of its fighting methods in all ranges including a strong focus on grappling range; all of which can be done with or without a weapon in this martial art. 








Larry Hartsell demonstrating a stick disarm from Lameco Escrima.


No one can can learn how to defend themselves against a weapon without the study of a sophisticated weapon oriented martial art such as Kali, and this area of realistic ancient fighting is definitely it, with hundreds of years of success of defending their land from foreign invaders. It is highly recommended that if you feel uncomfortable practicing the blade defenses in a style that is not weapon oriented, try Filipino martial arts to see the differences for certainty and survival!

Below, you will see a trapping exercise (Higot Hubud Lubud which means to tie and untie then blend)  that is traditionally done in the Inosanto and Pekiti Tirsia Kali practiced at the Practical Self Defense Training Center in Waterbury, Connecticut. The sequence will not be easy to follow on this web page, but you will at least get an idea how we train against an individual randomly knife slashing as opposed to a predetermined technique to practice. This is important to constantly practice to understand for both the art and science of Kali as well as the self defense potential it offers.


"Never interrupt your enemy when he is making a mistake."

- Napoleon Bonaparte


For information on Kali and other Filipino martial arts call 203 802 8533


The Filipino ancient warrior systems are sometimes referred to as Arnis, Escrima, which by the way are the most popular names. Arnis, Eskrima or Escrima is a Spanish origin. "Kali" is the ancient indigenous name taken from the word :Kalis. " Kalis is an ancient blade which is also native to the Filipino people.

Kali has a long history as a martial art that has been used in the Philippines for survival purposes and history shows, using these Filipino martial arts for survival purposes very successfully!

Click here for the Kali, Arnis, Escrima class schedule

The most complete Filipino Martial Art curriculums in Connecticut


.Filipino Indigenous Fighting Arts Retreat - July 28th, 29th & 30th - A never seen before historical FMA event of:.

Kali and Kuntao taught by by Ron Kosakowski - CLICK HERE for more information and registration....



Kali, Arnis & Escrima
847 Hamilton Ave (Rt 69).
Waterbury, Connecticut 06706
203-596-9073 or 203-802-8533






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Copyright 2001, Ron Kosakowski
Practical Self Defense Training Center
847 Hamilton Avenue
Waterbury, CT 06706
203-596-9073 or 203-802-8533
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