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It seems to have been made less simple by that government site simplifying it. So basically the 10% tolerance is for measuring inaccuracies not the fact that changing the tyre fitted to the bike could increase its speed. People are actively using very high powered ebikes on the road with...

Sounds like Tesco were selling the Viking Hopper which is a model from Avocet sports. Might be worth contacting Avocet to see if they can help. Tesco don't import these bikes themselves but normally make use of a bike importer. I bought the i-fold folding bike from Tesco a few years ago which I...

I didn't know that about kits. I assume they are still tested and sold to be EN15194 compliant. I went onto the page here to clarify and I'm more confused; https://www.gov.uk/electric-bike-rules Just to see what they said and it states maximum power 250W rather than nominal or rated and yet...

It's important to remember mid-drive delivers its power through the drivetrain which means some efficiency losses through the gears maybe 2-3Nm and mid-drive motors typically peak higher in rpm so their maximum torque can be higher but this may not be sustainable for the motor for as long...

I might measure a few tyres to see their overall circumference and how they vary. Many kits don't come with tyres just a bare wheel so I guess they could choose a tyre to base their speed on despite not supplying one. So if you use a tyre like a Schwalbe fat frank 26"x2.35" you will get some...

I believe I'm right in writing there is a 10% tolerance for this speed so the real maximum top speed is about 17-17.5mph but this is the absolute top legal limit. It allows for different tyre sizes that would mean different assist speeds. I'm just curious how is the 15.5mph limit set is it the...

Folding bikes and folding ebikes can typically accomodate a wide range of rider sizes. Although 6'4" is perhaps a little beyond many folding bikes I think. However folding bikes are a great option for easy storage and perhaps sharing amongst other members of the family. Perhaps a family in a...

I have a question that seems a good fit for this thread. Some people use rubber matting or similar on the fork blade to secure the bracket. It's not included with any kit but what is the best material for this. A bit of old inner tube or just some thin rubber matting perhaps originally from...

I think if you have a regen motor then the forces reverse so really its just a matter of removing as much play as possible or maybe having two torque arms one on the front of the fork blade and one on the rear of the other blade. Steel forks obviously help here. Where you might only need one...

I saw this Trace Velo short about tubeless Schwalbe tyres for his gravel bike build and they were leaking badly from the sidewalls despite being sold as tubeless compatible. Comments to the video shows some people have the same tyres without issues and some just allow the sealant to bed in the...

I didn't realise Swytch kit's were so high powered in torque. I guess I assumed that because they provide such weedy batteries they would have reduced torque. Maybe the motor is capable of that torque but the battery would struggle. Anyway with mid-drive you have to calculate the real torque...

Great result but does make you think that Schwalbe or Hunga quality isn't fantastically consistent.

Send them a weird image of six knives sticking out of the tyre or possibly burn the tyre and take a picture of it burning. I guess if you want to be normal just cut the tyre in half. I shall remember in the future that Magic Mary isn't actually that magic in fact the tyres are a bit rubbish on...

Much heavier and you'd have the weight of an inner tube in there. I may not share much bike related equipment with you but we do at least have the same scales the 1150BKDR Salter scales.

I'm exactly the same I look at the what the bike industry is offering at mid to high level pricing for spec and find it interesting but would never buy it. There is a lot of high margin products in the bike industry of dubious quality and value that are best ignored. Swytch is poor value...

I'm not too sure about reliable but it rely depends on how you judge reliability but a small motor operating at very high rpm through a series of cogs and sometimes belts and then used with a chain based drivetrain would surely always mean a high wear rate and more stressed components. Yes you...

Two things that would be important to me is the legality of the ebike in question and how proprietary the parts are. Is it using standard components that can easily be replaced or serviced. I look at ebikes like the M21 and I think will I be able to get a replacement controller in a few years...

As long as the throttle only operates while you are pedalling its perfectly legal. The confusion lies with twist and go ebikes which are now no longer legal except for that special DVLA process exception. I don't know much about the Crosscity except it has more standard ebike components rather...

Out of curiosity I googled bicycle tyre recall and a lot of the first hits weren't tyres but the first tyre to appear in the list was Schwalbe. I know Schwalbe originally started because the Korean manufacturer couldn't get a foothold in western markets because Korean products weren't highly...

I take your point about mid-drive's having more rare earth magnets but they are used everywhere aren't they from drills to table fans etc. I don't think that is a fair comparison as compared to an EV like a car there is very little used. They aren't that rare and the fact the motor costs very...