You cannot legally use a 1000w motor and restrict it in any way to make it legal in Australia or Europe. The rule is very clear. The motor must have a maximum rated continuous power of no more than 250W. There is nothing that Em3ev or Justin has that can change that.
Any motor that's listed as 1000w is automatically out. It would have to be listed, labelled or catalogued as a 250w (or less) motor to be legal.
What you can get away with is different. Nobody seems to be checking and nobody seems to be bothered about what people are doing with their electric bikes; however, think about this incident. A guy was riding his fixie at 18 mph when a woman stepped out into the road without looking while texting on her mobile phone. They banged heads and she died. Today, he is in the Old Bailey defending a charge of causing death by wanton and furious riding because he had no front brake. In the UK, it's illegal to ride a fixie bike without a front brake. If found guilty, he'll go to jail. Also, I can imagine a massive lawsuit that will keep him in poverty for the rest of his life even if he doesn't go to jail.
Court 11. Notice that in the other courts all the defendants are charged with murder. That's how serious it is. this is the Old Bailey, not your local magistrates court:
https://old-bailey.com/old-bailey-cases-of-interest/
http://www.huffingtonpost.co.uk/entry/charlie-alliston-kim-briggs-trial-latest_uk_5995a251e4b0acc593e5ab3f
Any motor that's listed as 1000w is automatically out. It would have to be listed, labelled or catalogued as a 250w (or less) motor to be legal.
What you can get away with is different. Nobody seems to be checking and nobody seems to be bothered about what people are doing with their electric bikes; however, think about this incident. A guy was riding his fixie at 18 mph when a woman stepped out into the road without looking while texting on her mobile phone. They banged heads and she died. Today, he is in the Old Bailey defending a charge of causing death by wanton and furious riding because he had no front brake. In the UK, it's illegal to ride a fixie bike without a front brake. If found guilty, he'll go to jail. Also, I can imagine a massive lawsuit that will keep him in poverty for the rest of his life even if he doesn't go to jail.
Court 11. Notice that in the other courts all the defendants are charged with murder. That's how serious it is. this is the Old Bailey, not your local magistrates court:
https://old-bailey.com/old-bailey-cases-of-interest/
http://www.huffingtonpost.co.uk/entry/charlie-alliston-kim-briggs-trial-latest_uk_5995a251e4b0acc593e5ab3f