Hi Marc!

with the EW-2B it is really as easy as advertised. For the first 2/3 of
the launch you just apply the optimal constant force, in the last 1/3
you reduce the force gradually until the gilder releases. Just did 12
tows Saturday.

Hans


Marc Ramsey schrieb:
Bill Daniels wrote:
A "traditional winch" doesn't control tension but tries (and often
fails) to control cable speed which doesn't relate in any logical way
to glider airspeed anyway. If the tension is controlled instead, the
speed will decrease as the pilot pitches up since this adds load to
the cable which the winch senses and slightly reduces power. This
happens almost instantly so the pilot sees the airspeed behave
logically as it would in a powerful airplane. This puts airspeed
control completely in the hands of the pilot where it belongs.

This is best considered as *theory* as very few, if any, true tension
controlled winches exist in the real world. The electric EW-2B and
hydraulic Hydrostart could theoretically operate in this fashion, but
I'd love to hear from anyone who knows how they are actually operated in
practice...

Marc