Creating rope in 2d phisycs

Hi! I'm trying to create a rope which user will have to grab by the end and pull to some object. I've done it and it works quite fine. The problem is when user pull fast then seperate objects in rope get's too far away. I have like 30 objects(Each object has Rigidbody 2d and Hinge joint 2d attached). Here is print of my settings.![alt text][1]. Any idea what i have been doing wrong? [1]: /storage/temp/19664-example.png