Thread: Discussion IOM General Discussion
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Old Oct 16, 2012, 12:09 PM
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Hi Jim,

The number of turns is a function of the drum dia. and the amount of sheet you need to move from full in to full out. The amount of sheet movement depends upon the distance from the goose neck to the sheeting post.

Common sheeting post placement is 200 or 230 mm behind the goose neck.

Typical sheet movement is about 280 mm if your sheeting post is 200mm from goose neck. (the lenght of the diagonal if two adjacent sides are 200 mm)

Typical sheet movement is about 325mm if your sheeting post is 230mm. from goose neck.

It looks like you have a 42mm drum. so one turn moves 132mm of line.

So for a 200 mm sheeting post, 280/132 = 2.1 turns

and for a 230,, sheeting post, 325/132 = 2.46.

John
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