Mechnique,

Your request is not trivial. Normally, requests to the forum entails drawing upon historical knowledge, experiece or an ability to guide one to the source of answers.

Your requests requires both informing you of missing data, missing criteria to create the data, and making a series of assessments to give you the needed engineering you have not asked for and probably do not know you need. You are not asking for free advice. You are asking for free engineering services. I believe most if not all forum participants value their time and expertise. You should do the same.

I am sure many can answer your query. Are you willing to pay for the service of informing you on: a) what you do not know and need before the design process can be executed, and b) all necessary calculations which may take a number of days?

All appropriate tension ranges (low and high) need to be explored. Variations in: a) new and worn belt, b) temperature and their affects, c) loading cases (empty, full; partial) together with, d) starting and stopping dynamics, with e) "what if" scenarios need to be set as part of a design criteria.

There are a number of issues not addressed in the above. The point is there is more to it than a simple value. If this is what you seek, I say owner beware.

Lawrence Nordell

Conveyor Dynamics, Inc. ■