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Typical trade magazine review, which is basically a copy of a press release from the supplier. Where's the bit about actually riding the bike? Tried and tested TransX motor? Where? By whom? For how long? I've never seen that motor in any other bike!

But I can't find where you input your own power. That's the biggest single factor that affects range. Without it in the algorithm, any prediction could be wildly out. Some people pedal consistently at 200w, others struggle for 50W. Lets say it calculates a range of 64km (40 miles) and has the...

How does that Bosch simulator know how hard you're going to be pedalling? It has no idea of who I am, how much I practice and how fit I am. Sometimes I pedal hard for the whole journey, and sometimes I don't pedal hard at all.

What would be worse is that if something went wrong with the bike and it had to be returned.

What about turning them to change the limit? You can test whether they're right by moving the derailleur by hand to see if lines up with both top and bottom gears.

There is a difference between different crank motors on the market. Some are very easy to rev out, which is really annoying if you have a high cadence or established pedal routine. The problem is that if you increase its max rpm for people with a high cadence, you lose efficiency for those with...

If you have a crank motor that still gives power at 120 rpm. It'll be very inefficient at 60 rpm, which is the sort of cadence many of our forum members have. You'd only want 120 rpm for for sports riders.

Your head is full of misonceptions. One more time, tell us what you want to achieve so we can help.

Yes, I think Prof. Hugh Jardon said something about elections, but it might have been erections. There was a lot of noise when I was talking to him.

Practice makes perfect!

Do you really think that's going to help people choose between the hub motor and crank-drive version? I try to keep things simple where necessary. Take any bike with say a 15A controller. Solder the shunt to get 18 amps. You get 20% more current and approximately 20% torque. Simples!

There is no law on how much power you put through the motor in the UK! There's only a limit on the type of motor.

You can't generalise like that. I have hills as steep as 30%, and my hub motor is perfect for them (my weight 85kg). I've done the same hills on crank-drive bikes, which also managed them fine. It's not so much the motor, but exactly which motor it is and the voltage and current that you apply...

You can change the speed of any motor by using a different volage. Q100c is smaller and lighter than a Q128C Torque is proportional to current, so just turn down the current if you want less torque. Why don't you tell us what you're trying to achieve, so we can tell you how to get it rather...

I heard a rumour from a good source that now that BJ has a significant majority, he's going to reverse the restrictive legislation and go for what's effectively a no-deal Brexit. At a minimum, after sorting out legislation, he's going to threaten the EU with a no-deal to secure much better terms...

I use one of these. It has a lot of extra functions for testing them, which is useful for building ebike batteries, but probably a bit over specified for charging lights...

Ok, I think I understand what's happened. here's how to fix it: 1. Loosen off the two clamp screws in the stem, which is the black piece underneath the bottom fold. One comes from each side. 2. With the bike in it's normal state (unfolded) and standing upright leaning against a wall or on it's...

The screw fits into a thing called a starnut inside the tube. The starnut can pe pushed down the tube, but it locks when you try and pull it up. It seems that you somehow pushed it down. The easiest fix is a longer screw. Alternatively, you can push it all the way down the tube until it comes...

He's a professor of information studies - the guy that knows what he's talking about, and he's always right so there's no argument.

The control panels measure the battery voltage directly, so if more than one says the voltage is low, you have to find out why. Measure the voltage between the red and black LCD wires, then the two battery wires going into the controller, then the battery terminals to find out where the drop is...