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Old 30-01-14, 18:53
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Richard Farrant Richard Farrant is offline
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Quote:
Originally Posted by Tony Wheeler View Post
Sound logic Richard but when you do the math you find this winch is geared ridiculously low for recovery work. It's permanently in low ratio, which is designed for lifting 2 tons vertically over a few feet, not pulling a one ton vehicle horizontally over 120 feet! It can be calculated that would require 1400 turns of the handle, advancing the jeep only 1" per turn. The only way this winch would be remotely practical is with the handle set at minimal length, eg. 6" or less, and wound rapidly with one hand, in the manner of cranking a motor. That's no problem as the force required is less than 20lbs, so you could keep up a steady rate of 100 rpm or more, which would get the job done in a few minutes. However I believe it would be much better with a higher ratio and the handle set longer, so you could shorten it over the easy stretches and go much faster. That said though it's a helluva lot better than no winch at all!
Hi Tony,
If it were a longer rope on there, and thus more layers, as each layer built up it would require less turns on the handle as effective drum diameter is increasing. It gave you the incentive not to get in a situation to use the winch!

cheers Richard
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1943 Bedford QLD lorry - 1941 BSA WM20 m/cycle - 1943 Daimler Scout Car Mk2
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