Hello Volvo farmer,
The tower is pretty much identical to Dans pencil drawing, except the jin pole and both tower tubes are 2.75 OD 2.50 ID x 20'and the stub to engage the yaw bearing is 2.50 OD x 2'. Total height then is 42'. Also I put in a permanent hand winch at the jin pole anchor and can raise and lower the turbine myself although two people is safer. Turbine rotor is 8'carved to Hughes specs.
Jim