I wanted to convert a bike to a road-legal mid-drive e-bike, and Cyclotricity came up on a web-search, with the eye-catching slogan "proudly made in the UK". They offered a road-legal (250W etc.) kit with a large (19Ah, 36 V battery), comparable to the competition, so after a few emails to a very helpful Elaine, checking the details, I ordered one.
Delivery was pretty prompt, and the installation fairly straightforward with my moderate mechanic skills. This was just as well, since the only instructions were a short leaflet and a video from the motor manufacturer Tongsheng - though it's badged Cyclotricity. There was a throttle supplied, which I hadn't ordered as it would have affected legality, and one key lead still had a cap on, but connecting up was simple thanks to colour-coding. Fitting is simplified by the controller being integral with the motor (so it had better not go wrong) and the controls are on the side of the handlebar display. Setting wheel size, preferred units etc. was a trial-and-error exercise as no instructions were provided, and the manual on the website was eight years old and referred to a previous version of the display.
I've now ridden 101 km, and am glad to say it works well. There are five power levels, but I've never had to use higher than level 4 for a steep single-chevron hill. Thanks to torque-sensing, power kicks in instantly. The motor is pretty quiet except when working hard up a steep hill, and cutting in and out at about 25.5 km/h is imperceptible. The display is simple, bright and clear, though the up and down buttons take a bit of finding at first. The display battery meter drops under load, and the elderly manual advises against relying on it. The level indicator on the battery itself dropped to one (red) blob at pretty well exactly on 100 km, including over 700 metres of climbing, some of which was steeper than 1:7. I am having to retighten various bolts after each ride (time for thread-lock).
So, what's not to like? Sadly, information from Cyclotricity is sketchy, to say the least. The website gives limited detail, and indeed that alone could have made me take my custom elsewhere. The tab for videos takes you to text in Swedish (I think) and the manuals available date from 2016 and are out-of-date and not specific to this type of motor. Fortunately, Elaine replies helpfully and promptly.
Conclusion: I'm pleased with it and at £725 (battery discounted) it's good value - but the information available should be so much better.
Cyclotricity mid-drive motor
Re: Cyclotricity mid-drive motor
Well done. Fitting is generally straightforward. I fitted a Tongsheng mid drive kit to our tandem. It's now been going strong for over 9,000 miles. I found the instructions wanting for the controller having found a translation from the original Chinese version. I purchased my kit from PSW power in Germany. I believe they have relocated to France.
Very pleased.
viewtopic.php?t=153920#p1737369
Very pleased.
viewtopic.php?t=153920#p1737369
Peugeot 531 pro, Dawes Discovery Tandem, Dawes Kingpin X2, Raleigh 20 stowaway X2, 1965 Moulton deluxe, Falcon K2 MTB dropped bar tourer, Rudge Bi frame folder, Longstaff trike conversion on a Giant XTC 840, Giant Bowery, Apollo transition. 
