PROBLEM REGARDING JERK IN LHB RAKE. Plz visit thse links.. exerpts with reason..
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"the problem of jerk in LHB coaches are under consideration. Appropriate option will be selected after proving trials and all coaches modified during the plan"
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"While...
more... the LHB design coach has all the necessary safety features, the existing tight lock coupler design has certain clearances, resulting in unacceptable jerk affecting passenger comfort. The Kakodkar committee was informed that a new design of draft gear has solved the problem of jerk. If that is the case, then this new design should be adopted with immediate effect and the existing coaches should be retrofitted with such design of draft gear."
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