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HA467078 - Valtek

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3URJUDPPLQJ#757@<br />

_;_<br />

>75;@<br />

+ROG<br />

0,1#',$0(7(5#>758@<br />

D;2<<br />

',$0(7(5#>75:@<br />

5((/#63(('#>76:@<br />

_75763@<br />

5(6(7#9$/8( (;7(51$/#5(6(7<br />

>795@<br />

>796@<br />

Line Speed (S)<br />

ωr<br />

Reel Diameter<br />

(D)<br />

Core Diameter (d)<br />

Circumference = πD or Line Speed (S) = Reel Speed (ωr) x D<br />

Thus D =<br />

S<br />

ωr<br />

i.e. D ∝<br />

Line Speed (S)<br />

Reel Speed (ωr )<br />

Therefore with the web intact we can calculate the diameter from the two speeds<br />

8

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