E-Bike electric systems - my investigation

 So far in looking at ebikes I have come across four types of electric motor systems. I want to know the difference. 

The guy at Pedals cycle shop said that in-frame motors respond to pressure on the pedals to supply power, where as rear-hub systems  go on speed. Is this true?

I am not considering front hub systems like Swytch. I am not interested in them.

I like the concept of the Quella bikes where there is no electrical connection between the wheel and the battery. https://www.quellabicycle.com But they are all single speed bikes. 

Halfords Boardman bikes use the Fazua Evation system. 

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What is Fazua Evation?

The Fazua Evation e-bike drive system features a hidden, integrated motor capable of producing250W of power assistance and 60Nm of torque. This is combined with a removable 250Wh battery, which makes for easy charging without needing a plug where you store your bike. With a range of up to 56 miles* on the “Breeze Mode” setting, long rides are efficiently dealt with.

Using a sophisticated combination of Torque, Speed and Cadence sensors, the Fazua system closely monitors your pedalling and feeds in power smoothly when you need it, stopping instantly when you stop pedalling[1]. You’re always in complete control. There are 3 levels of assistance to choose from using the intuitive handlebar remote control, which also shows battery charge levels.

Weighing in at just 4.6Kg for the whole system, the Fazua Evation system keeps the Boardman HYB-E and ADV-E e-bikes lightweight and practical to live with. The battery and motor can also be removed [2] and replaced with a lightweight cover (sold separately), meaning you can ride your e-bike just like a normal bike with barely any weight penalty and no extra drivetrain resistance if you decide you don’t need any assistance.

Fazua App

By using the FAZUA app which is compatible with all Boardman eBikes, you can get access to all of the below that will assist your journey and will help you learn more about your training and your bike.

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Questions on that. [1]Motor stops when you stop pedalling?

[2] Battery and motor can be removed easily?

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Here is a report that describes the types of motors, but doesn't answer all of my questions and indeed, raises some more:

https://bicycleuniverse.com/best-electric-bike-motors/

So two types of hub motors and no suggestion as to how the use of the motor is controlled. It also suggests that 28mph is the maximum where in the UK ebikes are limited to 15mph.  No date on the article so we don't know how old or relevant it is.   None of the articles mention that hub motors need a means of getting the electricity to the motor from the frame and how susceptible to problems this is. 

One article suggests that hub motors are usually heavier than mid-drives, but I ask if the frame is heavier for a mid-drive.

Lets have a look at a couple of hub motor bikes and see if they tell what sort of motor it is:

GT eGrade Bolt:  MAHLE ebikemotion X35 250W   

https://www.mahle.com/weshapefuturemobility/en/

This motor doesn't use rare earth magnets, but electromagnets. 

Thoughts on Leaves, and God

 It seems that any time I hear of any conflict in the world, it is due to quarrels between different religions. I remember  some lectures that we went to by the Christadelphians, where it was pointed out that in the far distant past in the middle east, two brothers went their separate ways, and one became the Jewish group, and the other became the Muslim group.  There were lots of other tribes in that area too over the centuries, so I don't know how that fits in. 

But each of these religions is man-made, in somebody's idea of how god should be worshipped. God hasn't had any say in this. That's why I can't support any church, because it is just somebody's idea of how things are. 

I look at the leaves on the trees, and think that these are the foundations of life. They generate the Oxygen that we humans require to live, so they give us life. They fall off periodically and are regenerated  the next year, meanwhile providing the life around them with fertilizer to grow.   

I had a lot mor thoughts about this, but it has gone now.