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Hi do you note that there is a discrepancy between the specs you quoted and the specs listed in the aliexprress listing. Your earlier post indicated a rated discharge of 30a and the Ali more like 50 a when you close the throttle for full power you are demanding at least 41 amp . 72v at 3000w...

The 2014 uk consultive document did refer to rated power but that term did not make its way into the final document the latest version of which is October 2016. I do agree with your calculation that with if the motor was drawing 20a at 36v it will be consuming 800w , but that is not what the...

You are of course correct with the actual speeds, I should have indicated the speed in km . I was just trying to make the point that mobility aids were also considered by the EU. Those going on the road are another exempted category , and must meet a type approval , while those on the...

Hi trying to clarify all of the above. The electric motors in bikes are just a subset of general electric motors and the following is of general application Torque relates to motion in a circle Torque is measured in Newton . metre When a torque is applied and the shaft rotates one...

The law is actually very clear on this. The EU regulations 2002\24 and the updated uk government regulations advisory 2015 refer to power assistance of 250w. It is therefore the mechanical power available at the output of the motor. They refer also to it being continuous power in order to...

Mobility scooter 5 miles per hour ebike EPAC compliant any speed but only 15.5miles per hour under motor assistance.

According to the UK gov website, the definition of EPAC is that it will provide 250w at the output of the motor and not provide motor assistance above 15.5m/hr. So they do not care whether your motor could generate kW of power ifit were supplied with larger voltages , just that the mechanical...

Hi the best way to treat Li ion batteries is to keep them charged up . There is less wear inside the battery than if it is allowed to go flat. The advice about letting the battery go flat was correct when the chemistry was Ni cad and of limited value when the technology had moved to Ni - meH...

....... And yes it claims to have walk assist. I have tried to use this function , pressed the button on the left side control , the logo stating walk assist appears on the display but I don't seem to get any power to the motor.

Why bother when it is something you cannot affect. The charging process is even more complex than indicated in the last post. The charger is a switch mode power supply converting a mains voltage to lower voltage typically 36 to 42 v for the normal Li ion pack. It is not 100% efficient and in...

Hi I got it early October and have made a number of postings. I have only done 360km so far . And typically do 30 to 40 km per trip. I suspect I am about the same age as yourself , recently retired. I usually charge the battery after each ride, and usually it is 20% or 1 bar discharged.after...

You need to shop around I got my Motus for less than that

Hi the derailleur gears on the modern bikes are a delight to use. they are just click up or click down while the chain is moving. If you are unused to modern ones and were more familiar with the controls of the paddle types mounted on the down tube you are in for a pleasant surprise. At...

Actually I may have been wrong about the crowd funding , I notice that they have a shop. There is no way that that sized electric motor could develop 800w and even if it could the 200whr battery would be exhausted in 15 minutes. 800w means a current of 40 amps @ 24v . Likewise a range of 40...

Hi looking at their website it looks as if they are looking for funds for crowd funding and the product exists only as a prototype at present. nice concept . There are a number of these friction drive units in production but this one is the most elegant. Efficiency is not high and wear on the...

Error replace tribal with global ... Predictive text is a curse. Although maybe in the context...... There is a lot of tribal thinking.

Hi kudosDave, you are not mistaken. I live close to the border with N I in the republic and did take advantage of the major improvement in the euro sterling rate to purchase my Motus in Lisburn ( just south of Belfast). Currency differentials and getting bargains are fleeting things in a...

Hi all the advice you have got so far is sound. What type of bike you get really depends on what you want to do. If your interest is just pottering into town from a campsite 2 miles out then anything will do and the small wheeled foldable s are perfect Many of the large supermarkets have such...