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

Kuntao Jun Fan Gung Fu /
Jeet Kune Do
Integrated Grappling

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& Events

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About the School





Jun Fan Gung Fu / Jeet Kune Do

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



Don't miss out on our upcoming Jeet Kune Do and Wing Chun 7th annual all day workshop...CLICK HERE for more information and registration


Jun Fan Gung Fu was Bruce Lee’s innovative combination of different martial ideas that occurred between 1964-1967. In 1967. Jun Fan Gung Fu became known as Jeet Kune Do; abbreviated as JKD. Jeet Kune Do eventually became a concept known to a few top Jeet Kune Do instructors as Jeet Kune Do Concepts, a way of training, a way to adapt to any possible situation that could occur in a self defense situation and a way to evolve. This was long before MMA schools were around...JKD was the first to explore different ranges of fighting. Jeet Kune Do is not practiced as a set pattern in the training methods or through forms. Which can only be done by researching various martial art styles to learn more possible paths to take along with different lines of attack to defend. It was meant for his students and generations to come to understand Bruce Lee’s fighting methods with the way he would have wanted it to progress and not stay with a certain stagnant pattern that never grows. (See: SOME THOUGHTS ABOUT JEET KUNE DO)

Ron teaching a small group about Jeet Kune Do for self defense purposes. JKD works well in kicking, boxing and trapping range.Jeet Kune Do has now evolved very scientifically through only a few of Bruce Lee's closest students, such as Larry Hartsell and Dan Inosanto. Jeet Kune Do is the attribute of many different fighting systems with a basic format consisting of intercepting your opponents strikes to hand-trapping as you would see in Wing Chun, utilizing the mechanics of boxing with boxing to fencing like evasive footwork. In this day and age it is a complete self-defense method that uses kicking, boxing, finger jabs, elbows, knees, head butts, takedowns. And also now-a-days, Jeet Kune Do, as it is taught at the Practical Self Defense Training Center, has a very highly enhanced standing and ground grappling tactical game consisting of various different grappling styles.

We offer a very intensive Mixed Martial Art, AKA - MMA program based on Muay Thai (Thai Boxing), Jeet Kune Do and Integrated Grappling Systems. Our Thai Boxers have always done very well in Muay Thai bouts. Our grapplers have also done very well over the years. These are the prerequisites for our MMA fighters to get used to fighting in the ring or in the cage. Jeet Kune Do is such a well put together science, it can be adapted to the fighting methods of MMA or for street oriented self defense situations. Blended with Muay Thai and Integrated Grappling Systems, it has been proven to work very well in both...especially in MMA fighting.


If you feel you have what it takes to be an MMA fighter, contact Ron to find out what you have to do.


Click here for the Jun Fan/Jeet Kune Do class schedule


It's just a job. Grass grows, birds fly, waves pound the sand. I beat people up.
-- Muhammad Ali

Jun Fan Gung Fu/Jeet Kune Do/Mixed Martial Arts/MMA
847 Hamilton Ave (Rt 69).
Waterbury, Connecticut 06706
203-596-9073 or 203-802-8533





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Jun Fan Gung Fu / Jeet Kune Do Kali - Silat Pekiti Tirsia Kali, Arnis, Eskrima Kuntao Integrated Grappling Systems Muay Thai MMA Brazilian Jiu Jitsu Tai Chi Wing Chun

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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