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The Crossfire is a lovely bike to ride. It's fairly powerful and the torque sensor works pretty well. The downside is the cut-outs, though my neighbour has one, and never experienced that problem. She uses it every day for a short trip to work. Another thing, just in case it's a consideration...

In most situations, the throttle is a speed controller, not a power controller. You get max power until the bike speed matches the throttle speed position. Q 100's are sensored. They have never run well sensorless. Other motors are much better when run sensorless, probably because they...

You can have both PAS and throttle. Use the PAS most of the time because it's more convenient and efficient, then use the throttle whenever you want. Assuming a KT controller, the throttle is proportional whenever you're not pedalling, but if you're pedalling, it becomes a level 5 boost.

That'll be Ok on the flat, but wi It's always very important that you choose a motor speed that suits your modal travelling speed, considering weight and hills as well.. I can't see much problem with that arrangement for a normal person on a normal bike doing normal rides. Even steepish hills...

The sine wave controllers are definitely better. The motor has hall sensors and a speed sensor. At 48v, the 22 amp KT sinewave controller from PSWPower would be very suitable. There’s no point in going to a higher voltage than that. The 48v 201 rpm version does 18 mph max in a 26" wheel. At...

You should get sine wave 48v 22 amps.

Have you tried carrying one onto a train or bus? They're pretty awkward, heavy and rather large.

Sorry, I forgot you had a 20" wheel. You need 328 rpm.

Basically, you should select the slowest 48v version, which they list as 201 rpm. I know in the past that they were actually that speed, but later, they started selling 260 rpm Q128s as 201 rpm versions, so there were two versions of the 36v one, which were 260 and 328 rpm. When you increase...

No, same as the 48v 328 rpm Q128. The 36v one is not 201 rpm, it's actually 260 rpm (at 36v).

For £700, you'd be much better off getting a cheap used catalogue bike from Facebook ads or wherever and add your own electic parts. You should be able to get abike with a steel frame and disc brakes for £60 to £100, which leaves you £600 for the electrics. A good battery is about £300. You need...

It's the same in all respects as the 328 rpm 48V one apart from the label.

You need to make sure that those translucent green shrouds cover the phase wire connections completely, otherwise you can get serious problems. The blue and green need to be made like the yellow one.

There's a secret combination of pressing the buttons on the LCD. I can't remember what it is now, but IIRC, it involves pressing a button 8 times, and I've got a feeling that another button had to be held down at the same time. It might be something like, press and hold the plus and minus...

You can only get the settings screen within a few seconds of switching on, so switch it off first, otherwise all you get is the chance to delete your trip odometer.

If that's your actual email address, you should delete this thread and start again with a different title otherwise you'll be inundated with offers for penis enlargement, etc.

I know some of the Powabyke throttles only work if you pedal first. Without the pedal sensor, you might be stuck. There are loads of brushed motor controllers on Ebay really cheap. You need one that can give around 18 to 20 amps. Unfortunately, they often list them as 350W, 500W or anything...

There's no workshop manual that gives any info on how to fix your problem. the manual tells you how to charge the battery and pump up your tyres, not how to do diagnostics. Error 30 is a communication error between the controller and LCD. it can be caused by a faulty connection or damaged wire...

What does that mean?