WinchTools

WinchTools is a simply software which calculates some usefull data about winch and pulley system. It is basically designed for cranes.

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Choose your motor(s)


XL	M	NXT	RC	71427	47154	Old 9V	Quantity

Choose your gears		Choose your battery
		9V (Alkaline)
		7,2V (NiMH, NiCd)
		Worm and knob gears reduce the efficiency and the torque

Choose your dimensions

Winch diameter (middle) : mm

Weight of the hook : g

Number of Strand : The number of strand (on the pulley system) increases the maximun load but reduces the speed. The tension is uniform in the rope. On the example, there are 5 strands

Results

Speed and Torque
Ratio :	Motor speed in charge : rpm
Linear speed of winch strang : cm/s	Torque on winch : N.cm
Linear speed of hook : cm/s	Stalled torque on winch : N.cm

Load

Maximun load on winch (primary tension) : N

Maximun load on hook (weight): kg

Vertical Load that the boom must support: N

Note : the maximun load of the hook is the maximun weight that the winch can lift, but be aware that this weight causes a high torque on the superstructure of your machine, especially if you have a long boom or jib (in case of cranes).
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