Greg,
G'day,
To be honest, I don't have a clue how much it weigh's but its not that heavy that I can not lift it up and sit it in the passenger side (with the seat removed). I would imagine it weigh's around 30-40kg(66 to 88Lbs) but thats only a guess - might actually find out now that you come to mention it. The biggest problem is trying to chock it, and tie it down so it does not roll forward or backward during flight.
It make for a good getabout though
Cheers