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Yes ! A 48v controller in the max assist setting (let's call it 17A) will give a notional 816w. Lets allow a massive 20% for various inefficiencies. That still leaves you at 652w. Having watched the Tour de France, they sometimes show a riders power output and this is the sort of wattage a...

How old is the bike? Are you reading the state of charge from the display unit? Do you have a volt meter?

So you pick a motor with the rpm to get you that speed (+ about 10%), in your sized wheel, under no load conditions. That way, when loaded, it should give the legal requirement but still give enough torque to climb. If you can maintain 50%+ of top rpm when climbing then the motor remains...

If the settings are for walk assist then the throttle will give 'push' start but only up to 6kh IIRC. if set to full throttle then you would have to pedal first. As Tony says, because kits are not specifically mentioned in the legislation, there is a loop hole that means builders kit bikes can...

If you were to choose that controller, then yes. The priniciple is that the maximum amperage of the battery is equal to, or preferably exceeds, the maximum rating of the controller. This way you avoid battery strain and degradation. Of course you may never use the maximum assist setting so...

This is tricky, you're still not getting it. A motor marked as 250w does not consume or output 250w. It consumes what the controller gives it. As Saneagle explained, the 250w rating is merely a statement by the manufacturer that the motor will not overheat if fed that power continuously. So a...

Controllers and displays normally need to be bought as a pair to make sure they talk to each other. Kt are used by lots on the forum and I see no reason why a display and controller would not work with any generic front hub. Don't know the bike you're referring too, 'Smartmotion' could imply...

As others have confirmed, the leds are live voltage indicators. They show the battery voltage instaneously. Even if you have the 'large' 180Wh battery, that is only a very small 5Ah. Not good for much more than a bit of shopping round town - if it's fairly flat. Any heavy draw on such a small...

Any motor that is marked as 250w will be legal. This is it's maximum continuous rating but means very little. If used in conjunction with a 7A continuous controller this will give 14A max. At 36v nominal this is 504w, at a fully charged 41v this is 574w. This will still be legal. A...

The led indicators do not indicate how much charge is left in the battery. They are voltage indicators. When a heavy draw is required of the battery voltage will decrease then recover when the draw/load is removed. Small Ah (Amp Hour) batteries will suffer more from this. Also the current...

Well that's gonna look great on my Mercedes Smart Bike :rolleyes:

Just come back from holiday with my sister in law. She has bought one of these: https://jorviktricycles.com/jorvik-elite-low-step-through-electric-folding-tricycle-jet-e?gad=1&gclid=Cj0KCQjwn_OlBhDhARIsAG2y6zNPE3Fbz2vsK9m3arXtLUlm9Ar83N1B4p9NRW6le4HUHsy7IBCiaS8aAgSLEALw_wcB It is 250w front hub...

So back to my question. Who should be the named manufacturer if it's a conversion kit ? I'd be using AKM motor on a Velotechnic Street Machine GT with batteries from Jimmy. How about 'Velobenjimakm' , rolls of the tongue don't it? Also, how does it make sense to be putting a plate on the frame...

That's why I use Anderson power plugs, both sides are shrouded. https://uk.farnell.com/anderson-power-products/asmpp30-1x2-rk/plug-rcpt-housing-2pos-pc-red/dp/2949132?gclid=EAIaIQobChMI_9v00cqOgAMVUe7tCh0svAjJEAQYASABEgKqjvD_BwE&gross_price=true&CMP=KNC-GUK-GEN-SHOPPING-PMAX-CLM-NCA

I ALWAYS seperate the batteries for charging because I have one 4A charger and one 2A. However, even if they were the same amperage and make, there are too many variables. Terminal voltage setting could be adrift by 0.1-0.2v or more. As they heat up during charging component drift will differ...

Used a simple Y splitter on two batteries for about 5 years now. I ALWAYS measure the voltage of the two packs before connecting together. I will not connect if the difference is above 0.5v. Although both packs have their own chargers, I use the same one to finish both packs, so not normally a...

So, back to kit labelling. My Carrera is a 2014 bike with a kit bought in the same year. I have receipts for both so I guess I'm not that bothered about that one. However, I'm about to convert a Velotechnic street machine which is a much more expensive base bike which would really hurt to get...

I have a Carrera with an Ezee kit (no markings on the motor), and will shortly be doing a kit conversion on a recumbent. What label should be on these bikes?

Mate, I wish I was that 15 year old. That sort of hands on, broad ranging practical apprenticeship is sorely lacking. Instead it's all classroom based theory and bits of paper probably taught by a guy who hasn't actually been 'on the tools' for years.